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Merge branch 'akpm' (patches from Andrew)

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Merge updates from Andrew Morton:
 "A few little subsystems and a start of a lot of MM patches.

  Subsystems affected by this patch series: squashfs, ocfs2, parisc,
  vfs. With mm subsystems: slab-generic, slub, debug, pagecache, gup,
  swap, memcg, pagemap, memory-failure, vmalloc, kasan"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (128 commits)
  kasan: move kasan_report() into report.c
  mm/mm_init.c: report kasan-tag information stored in page->flags
  ubsan: entirely disable alignment checks under UBSAN_TRAP
  kasan: fix clang compilation warning due to stack protector
  x86/mm: remove vmalloc faulting
  mm: remove vmalloc_sync_(un)mappings()
  x86/mm/32: implement arch_sync_kernel_mappings()
  x86/mm/64: implement arch_sync_kernel_mappings()
  mm/ioremap: track which page-table levels were modified
  mm/vmalloc: track which page-table levels were modified
  mm: add functions to track page directory modifications
  s390: use __vmalloc_node in stack_alloc
  powerpc: use __vmalloc_node in alloc_vm_stack
  arm64: use __vmalloc_node in arch_alloc_vmap_stack
  mm: remove vmalloc_user_node_flags
  mm: switch the test_vmalloc module to use __vmalloc_node
  mm: remove __vmalloc_node_flags_caller
  mm: remove both instances of __vmalloc_node_flags
  mm: remove the prot argument to __vmalloc_node
  mm: remove the pgprot argument to __vmalloc
  ...
This commit is contained in:
Linus Torvalds 2020-06-02 12:21:36 -07:00
commit 94709049fb
195 changed files with 2199 additions and 2198 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
Documentation/admin-guide/cgroup-v2.rst
View File

@ -1329,6 +1329,10 @@ PAGE_SIZE multiple when read back.
workingset_activate
Number of refaulted pages that were immediately activated
workingset_restore
Number of restored pages which have been detected as an active
workingset before they got reclaimed.
workingset_nodereclaim
Number of times a shadow node has been reclaimed
@ -1370,6 +1374,22 @@ PAGE_SIZE multiple when read back.
The total amount of swap currently being used by the cgroup
and its descendants.
memory.swap.high
A read-write single value file which exists on non-root
cgroups. The default is "max".
Swap usage throttle limit. If a cgroup's swap usage exceeds
this limit, all its further allocations will be throttled to
allow userspace to implement custom out-of-memory procedures.
This limit marks a point of no return for the cgroup. It is NOT
designed to manage the amount of swapping a workload does
during regular operation. Compare to memory.swap.max, which
prohibits swapping past a set amount, but lets the cgroup
continue unimpeded as long as other memory can be reclaimed.
Healthy workloads are not expected to reach this limit.
memory.swap.max
A read-write single value file which exists on non-root
cgroups. The default is "max".
@ -1383,6 +1403,10 @@ PAGE_SIZE multiple when read back.
otherwise, a value change in this file generates a file
modified event.
high
The number of times the cgroup's swap usage was over
the high threshold.
max
The number of times the cgroup's swap usage was about
to go over the max boundary and swap allocation

2
Documentation/core-api/cachetlb.rst
View File

@ -213,7 +213,7 @@ Here are the routines, one by one:
there will be no entries in the cache for the kernel address
space for virtual addresses in the range 'start' to 'end-1'.
The first of these two routines is invoked after map_vm_area()
The first of these two routines is invoked after map_kernel_range()
has installed the page table entries. The second is invoked
before unmap_kernel_range() deletes the page table entries.

6
Documentation/filesystems/locking.rst
View File

@ -239,6 +239,7 @@ prototypes::
int (*readpage)(struct file *, struct page *);
int (*writepages)(struct address_space *, struct writeback_control *);
int (*set_page_dirty)(struct page *page);
void (*readahead)(struct readahead_control *);
int (*readpages)(struct file *filp, struct address_space *mapping,
struct list_head *pages, unsigned nr_pages);
int (*write_begin)(struct file *, struct address_space *mapping,
@ -271,7 +272,8 @@ writepage: yes, unlocks (see below)
readpage: yes, unlocks
writepages:
set_page_dirty no
readpages:
readahead: yes, unlocks
readpages: no
write_begin: locks the page exclusive
write_end: yes, unlocks exclusive
bmap:
@ -295,6 +297,8 @@ the request handler (/dev/loop).
->readpage() unlocks the page, either synchronously or via I/O
completion.
->readahead() unlocks the pages that I/O is attempted on like ->readpage().
->readpages() populates the pagecache with the passed pages and starts
I/O against them. They come unlocked upon I/O completion.

4
Documentation/filesystems/proc.rst
View File

@ -1043,8 +1043,8 @@ PageTables
amount of memory dedicated to the lowest level of page
tables.
NFS_Unstable
NFS pages sent to the server, but not yet committed to stable
storage
Always zero. Previous counted pages which had been written to
the server, but has not been committed to stable storage.
Bounce
Memory used for block device "bounce buffers"
WritebackTmp

15
Documentation/filesystems/vfs.rst
View File

@ -706,6 +706,7 @@ cache in your filesystem. The following members are defined:
int (*readpage)(struct file *, struct page *);
int (*writepages)(struct address_space *, struct writeback_control *);
int (*set_page_dirty)(struct page *page);
void (*readahead)(struct readahead_control *);
int (*readpages)(struct file *filp, struct address_space *mapping,
struct list_head *pages, unsigned nr_pages);
int (*write_begin)(struct file *, struct address_space *mapping,
@ -781,12 +782,26 @@ cache in your filesystem. The following members are defined:
If defined, it should set the PageDirty flag, and the
PAGECACHE_TAG_DIRTY tag in the radix tree.
``readahead``
Called by the VM to read pages associated with the address_space
object. The pages are consecutive in the page cache and are
locked. The implementation should decrement the page refcount
after starting I/O on each page. Usually the page will be
unlocked by the I/O completion handler. If the filesystem decides
to stop attempting I/O before reaching the end of the readahead
window, it can simply return. The caller will decrement the page
refcount and unlock the remaining pages for you. Set PageUptodate
if the I/O completes successfully. Setting PageError on any page
will be ignored; simply unlock the page if an I/O error occurs.
``readpages``
called by the VM to read pages associated with the address_space
object. This is essentially just a vector version of readpage.
Instead of just one page, several pages are requested.
readpages is only used for read-ahead, so read errors are
ignored. If anything goes wrong, feel free to give up.
This interface is deprecated and will be removed by the end of
2020; implement readahead instead.
``write_begin``
Called by the generic buffered write code to ask the filesystem

2
Documentation/vm/slub.rst
View File

@ -49,7 +49,7 @@ Possible debug options are::
P Poisoning (object and padding)
U User tracking (free and alloc)
T Trace (please only use on single slabs)
A Toggle failslab filter mark for the cache
A Enable failslab filter mark for the cache
O Switch debugging off for caches that would have
caused higher minimum slab orders
- Switch all debugging off (useful if the kernel is

2
arch/arm/configs/omap2plus_defconfig
View File

@ -81,7 +81,7 @@ CONFIG_PARTITION_ADVANCED=y
CONFIG_BINFMT_MISC=y
CONFIG_CMA=y
CONFIG_ZSMALLOC=m
CONFIG_PGTABLE_MAPPING=y
CONFIG_ZSMALLOC_PGTABLE_MAPPING=y
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_UNIX=y

3
arch/arm64/include/asm/pgtable.h
View File

@ -407,6 +407,9 @@ static inline pmd_t pmd_mkdevmap(pmd_t pmd)
#define __pgprot_modify(prot,mask,bits) \
__pgprot((pgprot_val(prot) & ~(mask)) | (bits))
#define pgprot_nx(prot) \
__pgprot_modify(prot, 0, PTE_PXN)
/*
* Mark the prot value as uncacheable and unbufferable.
*/

6
arch/arm64/include/asm/vmap_stack.h
View File

@ -19,10 +19,8 @@ static inline unsigned long *arch_alloc_vmap_stack(size_t stack_size, int node)
{
BUILD_BUG_ON(!IS_ENABLED(CONFIG_VMAP_STACK));
return __vmalloc_node_range(stack_size, THREAD_ALIGN,
VMALLOC_START, VMALLOC_END,
THREADINFO_GFP, PAGE_KERNEL, 0, node,
__builtin_return_address(0));
return __vmalloc_node(stack_size, THREAD_ALIGN, THREADINFO_GFP, node,
__builtin_return_address(0));
}
#endif /* __ASM_VMAP_STACK_H */

2
arch/arm64/mm/dump.c
View File

@ -252,7 +252,7 @@ static void note_prot_wx(struct pg_state *st, unsigned long addr)
}
static void note_page(struct ptdump_state *pt_st, unsigned long addr, int level,
unsigned long val)
u64 val)
{
struct pg_state *st = container_of(pt_st, struct pg_state, ptdump);
static const char units[] = "KMGTPE";

2
arch/parisc/include/asm/pgtable.h
View File

@ -93,10 +93,8 @@ static inline void purge_tlb_entries(struct mm_struct *mm, unsigned long addr)
#define set_pte_at(mm, addr, ptep, pteval) \
do { \
pte_t old_pte; \
unsigned long flags; \
spin_lock_irqsave(pgd_spinlock((mm)->pgd), flags);\
old_pte = *ptep; \
set_pte(ptep, pteval); \
purge_tlb_entries(mm, addr); \
spin_unlock_irqrestore(pgd_spinlock((mm)->pgd), flags);\

10
arch/powerpc/include/asm/io.h
View File

@ -699,10 +699,6 @@ static inline void iosync(void)
*
* * iounmap undoes such a mapping and can be hooked
*
* * __ioremap_at (and the pending __iounmap_at) are low level functions to
* create hand-made mappings for use only by the PCI code and cannot
* currently be hooked. Must be page aligned.
*
* * __ioremap_caller is the same as above but takes an explicit caller
* reference rather than using __builtin_return_address(0)
*
@ -719,6 +715,8 @@ void __iomem *ioremap_coherent(phys_addr_t address, unsigned long size);
extern void iounmap(volatile void __iomem *addr);
void __iomem *ioremap_phb(phys_addr_t paddr, unsigned long size);
int early_ioremap_range(unsigned long ea, phys_addr_t pa,
unsigned long size, pgprot_t prot);
void __iomem *do_ioremap(phys_addr_t pa, phys_addr_t offset, unsigned long size,
@ -727,10 +725,6 @@ void __iomem *do_ioremap(phys_addr_t pa, phys_addr_t offset, unsigned long size,
extern void __iomem *__ioremap_caller(phys_addr_t, unsigned long size,
pgprot_t prot, void *caller);
extern void __iomem * __ioremap_at(phys_addr_t pa, void *ea,
unsigned long size, pgprot_t prot);
extern void __iounmap_at(void *ea, unsigned long size);
/*
* When CONFIG_PPC_INDIRECT_PIO is set, we use the generic iomap implementation
* which needs some additional definitions here. They basically allow PIO

2
arch/powerpc/include/asm/pci-bridge.h
View File

@ -66,7 +66,7 @@ struct pci_controller {
void __iomem *io_base_virt;
#ifdef CONFIG_PPC64
void *io_base_alloc;
void __iomem *io_base_alloc;
#endif
resource_size_t io_base_phys;
resource_size_t pci_io_size;

5
arch/powerpc/kernel/irq.c
View File

@ -748,9 +748,8 @@ void do_IRQ(struct pt_regs *regs)
static void *__init alloc_vm_stack(void)
{
return __vmalloc_node_range(THREAD_SIZE, THREAD_ALIGN, VMALLOC_START,
VMALLOC_END, THREADINFO_GFP, PAGE_KERNEL,
0, NUMA_NO_NODE, (void*)_RET_IP_);
return __vmalloc_node(THREAD_SIZE, THREAD_ALIGN, THREADINFO_GFP,
NUMA_NO_NODE, (void *)_RET_IP_);
}
static void __init vmap_irqstack_init(void)

28
arch/powerpc/kernel/isa-bridge.c
View File

@ -18,6 +18,7 @@
#include <linux/init.h>
#include <linux/mm.h>
#include <linux/notifier.h>
#include <linux/vmalloc.h>
#include <asm/processor.h>
#include <asm/io.h>
@ -38,6 +39,22 @@ EXPORT_SYMBOL_GPL(isa_bridge_pcidev);
#define ISA_SPACE_MASK 0x1
#define ISA_SPACE_IO 0x1
static void remap_isa_base(phys_addr_t pa, unsigned long size)
{
WARN_ON_ONCE(ISA_IO_BASE & ~PAGE_MASK);
WARN_ON_ONCE(pa & ~PAGE_MASK);
WARN_ON_ONCE(size & ~PAGE_MASK);
if (slab_is_available()) {
if (ioremap_page_range(ISA_IO_BASE, ISA_IO_BASE + size, pa,
pgprot_noncached(PAGE_KERNEL)))
unmap_kernel_range(ISA_IO_BASE, size);
} else {
early_ioremap_range(ISA_IO_BASE, pa, size,
pgprot_noncached(PAGE_KERNEL));
}
}
static void pci_process_ISA_OF_ranges(struct device_node *isa_node,
unsigned long phb_io_base_phys)
{
@ -105,15 +122,13 @@ static void pci_process_ISA_OF_ranges(struct device_node *isa_node,
if (size > 0x10000)
size = 0x10000;
__ioremap_at(phb_io_base_phys, (void *)ISA_IO_BASE,
size, pgprot_noncached(PAGE_KERNEL));
remap_isa_base(phb_io_base_phys, size);
return;
inval_range:
printk(KERN_ERR "no ISA IO ranges or unexpected isa range, "
"mapping 64k\n");
__ioremap_at(phb_io_base_phys, (void *)ISA_IO_BASE,
0x10000, pgprot_noncached(PAGE_KERNEL));
remap_isa_base(phb_io_base_phys, 0x10000);
}
@ -248,8 +263,7 @@ void __init isa_bridge_init_non_pci(struct device_node *np)
* and map it
*/
isa_io_base = ISA_IO_BASE;
__ioremap_at(pbase, (void *)ISA_IO_BASE,
size, pgprot_noncached(PAGE_KERNEL));
remap_isa_base(pbase, size);
pr_debug("ISA: Non-PCI bridge is %pOF\n", np);
}
@ -297,7 +311,7 @@ static void isa_bridge_remove(void)
isa_bridge_pcidev = NULL;
/* Unmap the ISA area */
__iounmap_at((void *)ISA_IO_BASE, 0x10000);
unmap_kernel_range(ISA_IO_BASE, 0x10000);
}
/**

54
arch/powerpc/kernel/pci_64.c
View File

@ -109,23 +109,47 @@ int pcibios_unmap_io_space(struct pci_bus *bus)
/* Get the host bridge */
hose = pci_bus_to_host(bus);
/* Check if we have IOs allocated */
if (hose->io_base_alloc == NULL)
return 0;
pr_debug("IO unmapping for PHB %pOF\n", hose->dn);
pr_debug(" alloc=0x%p\n", hose->io_base_alloc);
/* This is a PHB, we fully unmap the IO area */
vunmap(hose->io_base_alloc);
iounmap(hose->io_base_alloc);
return 0;
}
EXPORT_SYMBOL_GPL(pcibios_unmap_io_space);
static int pcibios_map_phb_io_space(struct pci_controller *hose)
void __iomem *ioremap_phb(phys_addr_t paddr, unsigned long size)
{
struct vm_struct *area;
unsigned long addr;
WARN_ON_ONCE(paddr & ~PAGE_MASK);
WARN_ON_ONCE(size & ~PAGE_MASK);
/*
* Let's allocate some IO space for that guy. We don't pass VM_IOREMAP
* because we don't care about alignment tricks that the core does in
* that case. Maybe we should due to stupid card with incomplete
* address decoding but I'd rather not deal with those outside of the
* reserved 64K legacy region.
*/
area = __get_vm_area_caller(size, 0, PHB_IO_BASE, PHB_IO_END,
__builtin_return_address(0));
if (!area)
return NULL;
addr = (unsigned long)area->addr;
if (ioremap_page_range(addr, addr + size, paddr,
pgprot_noncached(PAGE_KERNEL))) {
unmap_kernel_range(addr, size);
return NULL;
}
return (void __iomem *)addr;
}
EXPORT_SYMBOL_GPL(ioremap_phb);
static int pcibios_map_phb_io_space(struct pci_controller *hose)
{
unsigned long phys_page;
unsigned long size_page;
unsigned long io_virt_offset;
@ -146,12 +170,11 @@ static int pcibios_map_phb_io_space(struct pci_controller *hose)
* with incomplete address decoding but I'd rather not deal with
* those outside of the reserved 64K legacy region.
*/
area = __get_vm_area(size_page, 0, PHB_IO_BASE, PHB_IO_END);
if (area == NULL)
hose->io_base_alloc = ioremap_phb(phys_page, size_page);
if (!hose->io_base_alloc)
return -ENOMEM;
hose->io_base_alloc = area->addr;
hose->io_base_virt = (void __iomem *)(area->addr +
hose->io_base_phys - phys_page);
hose->io_base_virt = hose->io_base_alloc +
hose->io_base_phys - phys_page;
pr_debug("IO mapping for PHB %pOF\n", hose->dn);
pr_debug(" phys=0x%016llx, virt=0x%p (alloc=0x%p)\n",
@ -159,11 +182,6 @@ static int pcibios_map_phb_io_space(struct pci_controller *hose)
pr_debug(" size=0x%016llx (alloc=0x%016lx)\n",
hose->pci_io_size, size_page);
/* Establish the mapping */
if (__ioremap_at(phys_page, area->addr, size_page,
pgprot_noncached(PAGE_KERNEL)) == NULL)
return -ENOMEM;
/* Fixup hose IO resource */
io_virt_offset = pcibios_io_space_offset(hose);
hose->io_resource.start += io_virt_offset;

50
arch/powerpc/mm/ioremap_64.c
View File

@ -4,56 +4,6 @@
#include <linux/slab.h>
#include <linux/vmalloc.h>
/**
* Low level function to establish the page tables for an IO mapping
*/
void __iomem *__ioremap_at(phys_addr_t pa, void *ea, unsigned long size, pgprot_t prot)
{
int ret;
unsigned long va = (unsigned long)ea;
/* We don't support the 4K PFN hack with ioremap */
if (pgprot_val(prot) & H_PAGE_4K_PFN)
return NULL;
if ((ea + size) >= (void *)IOREMAP_END) {
pr_warn("Outside the supported range\n");
return NULL;
}
WARN_ON(pa & ~PAGE_MASK);
WARN_ON(((unsigned long)ea) & ~PAGE_MASK);
WARN_ON(size & ~PAGE_MASK);
if (slab_is_available()) {
ret = ioremap_page_range(va, va + size, pa, prot);
if (ret)
unmap_kernel_range(va, size);
} else {
ret = early_ioremap_range(va, pa, size, prot);
}
if (ret)
return NULL;
return (void __iomem *)ea;
}
EXPORT_SYMBOL(__ioremap_at);
/**
* Low level function to tear down the page tables for an IO mapping. This is
* used for mappings that are manipulated manually, like partial unmapping of
* PCI IOs or ISA space.
*/
void __iounmap_at(void *ea, unsigned long size)
{
WARN_ON(((unsigned long)ea) & ~PAGE_MASK);
WARN_ON(size & ~PAGE_MASK);
unmap_kernel_range((unsigned long)ea, size);
}
EXPORT_SYMBOL(__iounmap_at);
void __iomem *__ioremap_caller(phys_addr_t addr, unsigned long size,
pgprot_t prot, void *caller)
{

4
arch/riscv/include/asm/pgtable.h
View File

@ -473,9 +473,9 @@ static inline int ptep_clear_flush_young(struct vm_area_struct *vma,
#define PAGE_SHARED __pgprot(0)
#define PAGE_KERNEL __pgprot(0)
#define swapper_pg_dir NULL
#define TASK_SIZE 0xffffffffUL
#define VMALLOC_START 0
#define TASK_SIZE 0xffffffffUL
#define VMALLOC_END TASK_SIZE
static inline void __kernel_map_pages(struct page *page, int numpages, int enable) {}

2
arch/riscv/mm/ptdump.c
View File

@ -204,7 +204,7 @@ static void note_prot_wx(struct pg_state *st, unsigned long addr)
}
static void note_page(struct ptdump_state *pt_st, unsigned long addr,
int level, unsigned long val)
int level, u64 val)
{
struct pg_state *st = container_of(pt_st, struct pg_state, ptdump);
u64 pa = PFN_PHYS(pte_pfn(__pte(val)));

9
arch/s390/kernel/setup.c
View File

@ -305,12 +305,9 @@ void *restart_stack __section(.data);
unsigned long stack_alloc(void)
{
#ifdef CONFIG_VMAP_STACK
return (unsigned long)
__vmalloc_node_range(THREAD_SIZE, THREAD_SIZE,
VMALLOC_START, VMALLOC_END,
THREADINFO_GFP,
PAGE_KERNEL, 0, NUMA_NO_NODE,
__builtin_return_address(0));
return (unsigned long)__vmalloc_node(THREAD_SIZE, THREAD_SIZE,
THREADINFO_GFP, NUMA_NO_NODE,
__builtin_return_address(0));
#else
return __get_free_pages(GFP_KERNEL, THREAD_SIZE_ORDER);
#endif

3
arch/sh/kernel/cpu/sh4/sq.c
View File

@ -103,7 +103,8 @@ static int __sq_remap(struct sq_mapping *map, pgprot_t prot)
#if defined(CONFIG_MMU)
struct vm_struct *vma;
vma = __get_vm_area(map->size, VM_ALLOC, map->sq_addr, SQ_ADDRMAX);
vma = __get_vm_area_caller(map->size, VM_ALLOC, map->sq_addr,
SQ_ADDRMAX, __builtin_return_address(0));
if (!vma)
return -ENOMEM;

5
arch/x86/hyperv/hv_init.c
View File

@ -97,8 +97,7 @@ static int hv_cpu_init(unsigned int cpu)
* not be stopped in the case of CPU offlining and the VM will hang.
*/
if (!*hvp) {
*hvp = __vmalloc(PAGE_SIZE, GFP_KERNEL | __GFP_ZERO,
PAGE_KERNEL);
*hvp = __vmalloc(PAGE_SIZE, GFP_KERNEL | __GFP_ZERO);
}
if (*hvp) {
@ -379,7 +378,7 @@ void __init hyperv_init(void)
guest_id = generate_guest_id(0, LINUX_VERSION_CODE, 0);
wrmsrl(HV_X64_MSR_GUEST_OS_ID, guest_id);
hv_hypercall_pg = __vmalloc(PAGE_SIZE, GFP_KERNEL, PAGE_KERNEL_RX);
hv_hypercall_pg = vmalloc_exec(PAGE_SIZE);
if (hv_hypercall_pg == NULL) {
wrmsrl(HV_X64_MSR_GUEST_OS_ID, 0);
goto remove_cpuhp_state;

3
arch/x86/include/asm/kvm_host.h
View File

@ -1279,8 +1279,7 @@ extern struct kmem_cache *x86_fpu_cache;
#define __KVM_HAVE_ARCH_VM_ALLOC
static inline struct kvm *kvm_arch_alloc_vm(void)
{
return __vmalloc(kvm_x86_ops.vm_size,
GFP_KERNEL_ACCOUNT | __GFP_ZERO, PAGE_KERNEL);
return __vmalloc(kvm_x86_ops.vm_size, GFP_KERNEL_ACCOUNT | __GFP_ZERO);
}
void kvm_arch_free_vm(struct kvm *kvm);

2
arch/x86/include/asm/pgtable-2level_types.h
View File

@ -20,6 +20,8 @@ typedef union {
#define SHARED_KERNEL_PMD 0
#define ARCH_PAGE_TABLE_SYNC_MASK PGTBL_PMD_MODIFIED
/*
* traditional i386 two-level paging structure:
*/

2
arch/x86/include/asm/pgtable-3level_types.h
View File

@ -27,6 +27,8 @@ typedef union {
#define SHARED_KERNEL_PMD (!static_cpu_has(X86_FEATURE_PTI))
#endif
#define ARCH_PAGE_TABLE_SYNC_MASK (SHARED_KERNEL_PMD ? 0 : PGTBL_PMD_MODIFIED)
/*
* PGDIR_SHIFT determines what a top-level page table entry can map
*/

2
arch/x86/include/asm/pgtable_64_types.h
View File

@ -159,4 +159,6 @@ extern unsigned int ptrs_per_p4d;
#define PGD_KERNEL_START ((PAGE_SIZE / 2) / sizeof(pgd_t))
#define ARCH_PAGE_TABLE_SYNC_MASK (pgtable_l5_enabled() ? PGTBL_PGD_MODIFIED : PGTBL_P4D_MODIFIED)
#endif /* _ASM_X86_PGTABLE_64_DEFS_H */

8
arch/x86/include/asm/pgtable_types.h
View File

@ -194,7 +194,6 @@ enum page_cache_mode {
#define _PAGE_TABLE_NOENC (__PP|__RW|_USR|___A| 0|___D| 0| 0)
#define _PAGE_TABLE (__PP|__RW|_USR|___A| 0|___D| 0| 0| _ENC)
#define __PAGE_KERNEL_RO (__PP| 0| 0|___A|__NX|___D| 0|___G)
#define __PAGE_KERNEL_RX (__PP| 0| 0|___A| 0|___D| 0|___G)
#define __PAGE_KERNEL_NOCACHE (__PP|__RW| 0|___A|__NX|___D| 0|___G| __NC)
#define __PAGE_KERNEL_VVAR (__PP| 0|_USR|___A|__NX|___D| 0|___G)
#define __PAGE_KERNEL_LARGE (__PP|__RW| 0|___A|__NX|___D|_PSE|___G)
@ -220,7 +219,6 @@ enum page_cache_mode {
#define PAGE_KERNEL_RO __pgprot_mask(__PAGE_KERNEL_RO | _ENC)
#define PAGE_KERNEL_EXEC __pgprot_mask(__PAGE_KERNEL_EXEC | _ENC)
#define PAGE_KERNEL_EXEC_NOENC __pgprot_mask(__PAGE_KERNEL_EXEC | 0)
#define PAGE_KERNEL_RX __pgprot_mask(__PAGE_KERNEL_RX | _ENC)
#define PAGE_KERNEL_NOCACHE __pgprot_mask(__PAGE_KERNEL_NOCACHE | _ENC)
#define PAGE_KERNEL_LARGE __pgprot_mask(__PAGE_KERNEL_LARGE | _ENC)
#define PAGE_KERNEL_LARGE_EXEC __pgprot_mask(__PAGE_KERNEL_LARGE_EXEC | _ENC)
@ -284,6 +282,12 @@ typedef struct pgprot { pgprotval_t pgprot; } pgprot_t;
typedef struct { pgdval_t pgd; } pgd_t;
static inline pgprot_t pgprot_nx(pgprot_t prot)
{
return __pgprot(pgprot_val(prot) | _PAGE_NX);
}
#define pgprot_nx pgprot_nx
#ifdef CONFIG_X86_PAE
/*

23
arch/x86/include/asm/switch_to.h
View File

@ -12,27 +12,6 @@ struct task_struct *__switch_to_asm(struct task_struct *prev,
__visible struct task_struct *__switch_to(struct task_struct *prev,
struct task_struct *next);
/* This runs runs on the previous thread's stack. */
static inline void prepare_switch_to(struct task_struct *next)
{
#ifdef CONFIG_VMAP_STACK
/*
* If we switch to a stack that has a top-level paging entry
* that is not present in the current mm, the resulting #PF will
* will be promoted to a double-fault and we'll panic. Probe
* the new stack now so that vmalloc_fault can fix up the page
* tables if needed. This can only happen if we use a stack
* in vmap space.
*
* We assume that the stack is aligned so that it never spans
* more than one top-level paging entry.
*
* To minimize cache pollution, just follow the stack pointer.
*/
READ_ONCE(*(unsigned char *)next->thread.sp);
#endif
}
asmlinkage void ret_from_fork(void);
/*
@ -67,8 +46,6 @@ struct fork_frame {
#define switch_to(prev, next, last) \
do { \
prepare_switch_to(next); \
\
((last) = __switch_to_asm((prev), (next))); \
} while (0)

2
arch/x86/kernel/irq_64.c
View File

@ -43,7 +43,7 @@ static int map_irq_stack(unsigned int cpu)
pages[i] = pfn_to_page(pa >> PAGE_SHIFT);
}
va = vmap(pages, IRQ_STACK_SIZE / PAGE_SIZE, GFP_KERNEL, PAGE_KERNEL);
va = vmap(pages, IRQ_STACK_SIZE / PAGE_SIZE, VM_MAP, PAGE_KERNEL);
if (!va)
return -ENOMEM;

6
arch/x86/kernel/setup_percpu.c
View File

@ -287,9 +287,9 @@ void __init setup_per_cpu_areas(void)
/*
* Sync back kernel address range again. We already did this in
* setup_arch(), but percpu data also needs to be available in
* the smpboot asm. We can't reliably pick up percpu mappings
* using vmalloc_fault(), because exception dispatch needs
* percpu data.
* the smpboot asm and arch_sync_kernel_mappings() doesn't sync to
* swapper_pg_dir on 32-bit. The per-cpu mappings need to be available
* there too.
*
* FIXME: Can the later sync in setup_cpu_entry_areas() replace
* this call?

3
arch/x86/kvm/svm/sev.c
View File

@ -336,8 +336,7 @@ static struct page **sev_pin_memory(struct kvm *kvm, unsigned long uaddr,
/* Avoid using vmalloc for smaller buffers. */
size = npages * sizeof(struct page *);
if (size > PAGE_SIZE)
pages = __vmalloc(size, GFP_KERNEL_ACCOUNT | __GFP_ZERO,
PAGE_KERNEL);
pages = __vmalloc(size, GFP_KERNEL_ACCOUNT | __GFP_ZERO);
else
pages = kmalloc(size, GFP_KERNEL_ACCOUNT);

35
arch/x86/mm/dump_pagetables.c
View File

@ -249,10 +249,22 @@ static void note_wx(struct pg_state *st, unsigned long addr)
(void *)st->start_address);
}
static inline pgprotval_t effective_prot(pgprotval_t prot1, pgprotval_t prot2)
static void effective_prot(struct ptdump_state *pt_st, int level, u64 val)
{
return (prot1 & prot2 & (_PAGE_USER | _PAGE_RW)) |
((prot1 | prot2) & _PAGE_NX);
struct pg_state *st = container_of(pt_st, struct pg_state, ptdump);
pgprotval_t prot = val & PTE_FLAGS_MASK;
pgprotval_t effective;
if (level > 0) {
pgprotval_t higher_prot = st->prot_levels[level - 1];
effective = (higher_prot & prot & (_PAGE_USER | _PAGE_RW)) |
((higher_prot | prot) & _PAGE_NX);
} else {
effective = prot;
}
st->prot_levels[level] = effective;
}
/*
@ -261,7 +273,7 @@ static inline pgprotval_t effective_prot(pgprotval_t prot1, pgprotval_t prot2)
* print what we collected so far.
*/
static void note_page(struct ptdump_state *pt_st, unsigned long addr, int level,
unsigned long val)
u64 val)
{
struct pg_state *st = container_of(pt_st, struct pg_state, ptdump);
pgprotval_t new_prot, new_eff;
@ -270,16 +282,10 @@ static void note_page(struct ptdump_state *pt_st, unsigned long addr, int level,
struct seq_file *m = st->seq;
new_prot = val & PTE_FLAGS_MASK;
if (level > 0) {
new_eff = effective_prot(st->prot_levels[level - 1],
new_prot);
} else {
new_eff = new_prot;
}
if (level >= 0)
st->prot_levels[level] = new_eff;
if (!val)
new_eff = 0;
else
new_eff = st->prot_levels[level];
/*
* If we have a "break" in the series, we need to flush the state that
@ -374,6 +380,7 @@ static void ptdump_walk_pgd_level_core(struct seq_file *m,
struct pg_state st = {
.ptdump = {
.note_page = note_page,
.effective_prot = effective_prot,
.range = ptdump_ranges
},
.level = -1,

176
arch/x86/mm/fault.c
View File

@ -190,16 +190,13 @@ static inline pmd_t *vmalloc_sync_one(pgd_t *pgd, unsigned long address)
return pmd_k;
}
static void vmalloc_sync(void)
void arch_sync_kernel_mappings(unsigned long start, unsigned long end)
{
unsigned long address;
unsigned long addr;
if (SHARED_KERNEL_PMD)
return;
for (address = VMALLOC_START & PMD_MASK;
address >= TASK_SIZE_MAX && address < VMALLOC_END;
address += PMD_SIZE) {
for (addr = start & PMD_MASK;
addr >= TASK_SIZE_MAX && addr < VMALLOC_END;
addr += PMD_SIZE) {
struct page *page;
spin_lock(&pgd_lock);
@ -210,61 +207,13 @@ static void vmalloc_sync(void)
pgt_lock = &pgd_page_get_mm(page)->page_table_lock;
spin_lock(pgt_lock);
vmalloc_sync_one(page_address(page), address);
vmalloc_sync_one(page_address(page), addr);
spin_unlock(pgt_lock);
}
spin_unlock(&pgd_lock);
}
}
void vmalloc_sync_mappings(void)
{
vmalloc_sync();
}
void vmalloc_sync_unmappings(void)
{
vmalloc_sync();
}
/*
* 32-bit:
*
* Handle a fault on the vmalloc or module mapping area
*/
static noinline int vmalloc_fault(unsigned long address)
{
unsigned long pgd_paddr;
pmd_t *pmd_k;
pte_t *pte_k;
/* Make sure we are in vmalloc area: */
if (!(address >= VMALLOC_START && address < VMALLOC_END))
return -1;
/*
* Synchronize this task's top level page-table
* with the 'reference' page table.
*
* Do _not_ use "current" here. We might be inside
* an interrupt in the middle of a task switch..
*/
pgd_paddr = read_cr3_pa();
pmd_k = vmalloc_sync_one(__va(pgd_paddr), address);
if (!pmd_k)
return -1;
if (pmd_large(*pmd_k))
return 0;
pte_k = pte_offset_kernel(pmd_k, address);
if (!pte_present(*pte_k))
return -1;
return 0;
}
NOKPROBE_SYMBOL(vmalloc_fault);
/*
* Did it hit the DOS screen memory VA from vm86 mode?
*/
@ -329,96 +278,6 @@ out:
#else /* CONFIG_X86_64: */
void vmalloc_sync_mappings(void)
{
/*
* 64-bit mappings might allocate new p4d/pud pages
* that need to be propagated to all tasks' PGDs.
*/
sync_global_pgds(VMALLOC_START & PGDIR_MASK, VMALLOC_END);
}
void vmalloc_sync_unmappings(void)
{
/*
* Unmappings never allocate or free p4d/pud pages.
* No work is required here.
*/
}
/*
* 64-bit:
*
* Handle a fault on the vmalloc area
*/
static noinline int vmalloc_fault(unsigned long address)
{
pgd_t *pgd, *pgd_k;
p4d_t *p4d, *p4d_k;
pud_t *pud;
pmd_t *pmd;
pte_t *pte;
/* Make sure we are in vmalloc area: */
if (!(address >= VMALLOC_START && address < VMALLOC_END))
return -1;
/*
* Copy kernel mappings over when needed. This can also
* happen within a race in page table update. In the later
* case just flush:
*/
pgd = (pgd_t *)__va(read_cr3_pa()) + pgd_index(address);
pgd_k = pgd_offset_k(address);
if (pgd_none(*pgd_k))
return -1;
if (pgtable_l5_enabled()) {
if (pgd_none(*pgd)) {
set_pgd(pgd, *pgd_k);
arch_flush_lazy_mmu_mode();
} else {
BUG_ON(pgd_page_vaddr(*pgd) != pgd_page_vaddr(*pgd_k));
}
}
/* With 4-level paging, copying happens on the p4d level. */
p4d = p4d_offset(pgd, address);
p4d_k = p4d_offset(pgd_k, address);
if (p4d_none(*p4d_k))
return -1;
if (p4d_none(*p4d) && !pgtable_l5_enabled()) {
set_p4d(p4d, *p4d_k);
arch_flush_lazy_mmu_mode();
} else {
BUG_ON(p4d_pfn(*p4d) != p4d_pfn(*p4d_k));
}
BUILD_BUG_ON(CONFIG_PGTABLE_LEVELS < 4);
pud = pud_offset(p4d, address);
if (pud_none(*pud))
return -1;
if (pud_large(*pud))
return 0;
pmd = pmd_offset(pud, address);
if (pmd_none(*pmd))
return -1;
if (pmd_large(*pmd))
return 0;
pte = pte_offset_kernel(pmd, address);
if (!pte_present(*pte))
return -1;
return 0;
}
NOKPROBE_SYMBOL(vmalloc_fault);
#ifdef CONFIG_CPU_SUP_AMD
static const char errata93_warning[] =
KERN_ERR
@ -1257,29 +1116,6 @@ do_kern_addr_fault(struct pt_regs *regs, unsigned long hw_error_code,
*/
WARN_ON_ONCE(hw_error_code & X86_PF_PK);
/*
* We can fault-in kernel-space virtual memory on-demand. The
* 'reference' page table is init_mm.pgd.
*
* NOTE! We MUST NOT take any locks for this case. We may
* be in an interrupt or a critical region, and should
* only copy the information from the master page table,
* nothing more.
*
* Before doing this on-demand faulting, ensure that the
* fault is not any of the following:
* 1. A fault on a PTE with a reserved bit set.
* 2. A fault caused by a user-mode access. (Do not demand-
* fault kernel memory due to user-mode accesses).
* 3. A fault caused by a page-level protection violation.
* (A demand fault would be on a non-present page which
* would have X86_PF_PROT==0).
*/
if (!(hw_error_code & (X86_PF_RSVD | X86_PF_USER | X86_PF_PROT))) {
if (vmalloc_fault(address) >= 0)
return;
}
/* Was the fault spurious, caused by lazy TLB invalidation? */
if (spurious_kernel_fault(hw_error_code, address))
return;

5
arch/x86/mm/init_64.c
View File

@ -218,6 +218,11 @@ void sync_global_pgds(unsigned long start, unsigned long end)
sync_global_pgds_l4(start, end);
}
void arch_sync_kernel_mappings(unsigned long start, unsigned long end)
{
sync_global_pgds(start, end);
}
/*
* NOTE: This function is marked __ref because it calls __init function
* (alloc_bootmem_pages). It's safe to do it ONLY when after_bootmem == 0.

8
arch/x86/mm/pti.c
View File

@ -448,13 +448,7 @@ static void __init pti_clone_user_shared(void)
* the sp1 and sp2 slots.
*
* This is done for all possible CPUs during boot to ensure
* that it's propagated to all mms. If we were to add one of
* these mappings during CPU hotplug, we would need to take
* some measure to make sure that every mm that subsequently
* ran on that CPU would have the relevant PGD entry in its
* pagetables. The usual vmalloc_fault() mechanism would not
* work for page faults taken in entry_SYSCALL_64 before RSP
* is set up.
* that it's propagated to all mms.
*/
unsigned long va = (unsigned long)&per_cpu(cpu_tss_rw, cpu);

37
arch/x86/mm/tlb.c
View File

@ -161,34 +161,6 @@ void switch_mm(struct mm_struct *prev, struct mm_struct *next,
local_irq_restore(flags);
}
static void sync_current_stack_to_mm(struct mm_struct *mm)
{
unsigned long sp = current_stack_pointer;
pgd_t *pgd = pgd_offset(mm, sp);
if (pgtable_l5_enabled()) {
if (unlikely(pgd_none(*pgd))) {
pgd_t *pgd_ref = pgd_offset_k(sp);
set_pgd(pgd, *pgd_ref);
}
} else {
/*
* "pgd" is faked. The top level entries are "p4d"s, so sync
* the p4d. This compiles to approximately the same code as
* the 5-level case.
*/
p4d_t *p4d = p4d_offset(pgd, sp);
if (unlikely(p4d_none(*p4d))) {
pgd_t *pgd_ref = pgd_offset_k(sp);
p4d_t *p4d_ref = p4d_offset(pgd_ref, sp);
set_p4d(p4d, *p4d_ref);
}
}
}
static inline unsigned long mm_mangle_tif_spec_ib(struct task_struct *next)
{
unsigned long next_tif = task_thread_info(next)->flags;
@ -377,15 +349,6 @@ void switch_mm_irqs_off(struct mm_struct *prev, struct mm_struct *next,
*/
cond_ibpb(tsk);
if (IS_ENABLED(CONFIG_VMAP_STACK)) {
/*
* If our current stack is in vmalloc space and isn't
* mapped in the new pgd, we'll double-fault. Forcibly
* map it.
*/
sync_current_stack_to_mm(next);
}
/*
* Stop remote flushes for the previous mm.
* Skip kernel threads; we never send init_mm TLB flushing IPIs,

1
block/blk-core.c
View File

@ -20,6 +20,7 @@
#include <linux/blk-mq.h>
#include <linux/highmem.h>
#include <linux/mm.h>
#include <linux/pagemap.h>
#include <linux/kernel_stat.h>
#include <linux/string.h>
#include <linux/init.h>

6
drivers/acpi/apei/ghes.c
View File

@ -167,12 +167,6 @@ int ghes_estatus_pool_init(int num_ghes)
if (!addr)
goto err_pool_alloc;
/*
* New allocation must be visible in all pgd before it can be found by
* an NMI allocating from the pool.
*/
vmalloc_sync_mappings();
rc = gen_pool_add(ghes_estatus_pool, addr, PAGE_ALIGN(len), -1);
if (rc)
goto err_pool_add;

2
drivers/base/node.c
View File

@ -445,7 +445,7 @@ static ssize_t node_read_meminfo(struct device *dev,
nid, sum_zone_node_page_state(nid, NR_KERNEL_SCS_KB),
#endif
nid, K(sum_zone_node_page_state(nid, NR_PAGETABLE)),
nid, K(node_page_state(pgdat, NR_UNSTABLE_NFS)),
nid, 0UL,
nid, K(sum_zone_node_page_state(nid, NR_BOUNCE)),
nid, K(node_page_state(pgdat, NR_WRITEBACK_TEMP)),
nid, K(sreclaimable +

4
drivers/block/drbd/drbd_bitmap.c
View File

@ -396,9 +396,7 @@ static struct page **bm_realloc_pages(struct drbd_bitmap *b, unsigned long want)
bytes = sizeof(struct page *)*want;
new_pages = kzalloc(bytes, GFP_NOIO | __GFP_NOWARN);
if (!new_pages) {
new_pages = __vmalloc(bytes,
GFP_NOIO | __GFP_ZERO,
PAGE_KERNEL);
new_pages = __vmalloc(bytes, GFP_NOIO | __GFP_ZERO);
if (!new_pages)
return NULL;
}

2
drivers/block/loop.c
View File

@ -919,7 +919,7 @@ static void loop_unprepare_queue(struct loop_device *lo)
static int loop_kthread_worker_fn(void *worker_ptr)
{
current->flags |= PF_LESS_THROTTLE | PF_MEMALLOC_NOIO;
current->flags |= PF_LOCAL_THROTTLE | PF_MEMALLOC_NOIO;
return kthread_worker_fn(worker_ptr);
}

1
drivers/dax/device.c
View File

@ -377,6 +377,7 @@ static int dax_open(struct inode *inode, struct file *filp)
inode->i_mapping->a_ops = &dev_dax_aops;
filp->f_mapping = inode->i_mapping;
filp->f_wb_err = filemap_sample_wb_err(filp->f_mapping);
filp->f_sb_err = file_sample_sb_err(filp);
filp->private_data = dev_dax;
inode->i_flags = S_DAX;

11
drivers/gpu/drm/drm_scatter.c
View File

@ -43,15 +43,6 @@
#define DEBUG_SCATTER 0
static inline void *drm_vmalloc_dma(unsigned long size)
{
#if defined(__powerpc__) && defined(CONFIG_NOT_COHERENT_CACHE)
return __vmalloc(size, GFP_KERNEL, pgprot_noncached_wc(PAGE_KERNEL));
#else
return vmalloc_32(size);
#endif
}
static void drm_sg_cleanup(struct drm_sg_mem * entry)
{
struct page *page;
@ -126,7 +117,7 @@ int drm_legacy_sg_alloc(struct drm_device *dev, void *data,
return -ENOMEM;
}
entry->virtual = drm_vmalloc_dma(pages << PAGE_SHIFT);
entry->virtual = vmalloc_32(pages << PAGE_SHIFT);
if (!entry->virtual) {
kfree(entry->busaddr);
kfree(entry->pagelist);

4
drivers/gpu/drm/etnaviv/etnaviv_dump.c
View File

@ -154,8 +154,8 @@ void etnaviv_core_dump(struct etnaviv_gem_submit *submit)
file_size += sizeof(*iter.hdr) * n_obj;
/* Allocate the file in vmalloc memory, it's likely to be big */
iter.start = __vmalloc(file_size, GFP_KERNEL | __GFP_NOWARN | __GFP_NORETRY,
PAGE_KERNEL);
iter.start = __vmalloc(file_size, GFP_KERNEL | __GFP_NOWARN |
__GFP_NORETRY);
if (!iter.start) {
mutex_unlock(&gpu->mmu_context->lock);
dev_warn(gpu->dev, "failed to allocate devcoredump file\n");

2
drivers/gpu/drm/i915/gem/selftests/mock_dmabuf.c
View File

@ -66,7 +66,7 @@ static void *mock_dmabuf_vmap(struct dma_buf *dma_buf)
{
struct mock_dmabuf *mock = to_mock(dma_buf);
return vm_map_ram(mock->pages, mock->npages, 0, PAGE_KERNEL);
return vm_map_ram(mock->pages, mock->npages, 0);
}
static void mock_dmabuf_vunmap(struct dma_buf *dma_buf, void *vaddr)

5
drivers/lightnvm/pblk-init.c
View File

@ -145,9 +145,8 @@ static int pblk_l2p_init(struct pblk *pblk, bool factory_init)
int ret = 0;
map_size = pblk_trans_map_size(pblk);
pblk->trans_map = __vmalloc(map_size, GFP_KERNEL | __GFP_NOWARN
| __GFP_RETRY_MAYFAIL | __GFP_HIGHMEM,
PAGE_KERNEL);
pblk->trans_map = __vmalloc(map_size, GFP_KERNEL | __GFP_NOWARN |
__GFP_RETRY_MAYFAIL | __GFP_HIGHMEM);
if (!pblk->trans_map) {
pblk_err(pblk, "failed to allocate L2P (need %zu of memory)\n",
map_size);

4
drivers/md/dm-bufio.c
View File

@ -400,13 +400,13 @@ static void *alloc_buffer_data(struct dm_bufio_client *c, gfp_t gfp_mask,
*/
if (gfp_mask & __GFP_NORETRY) {
unsigned noio_flag = memalloc_noio_save();
void *ptr = __vmalloc(c->block_size, gfp_mask, PAGE_KERNEL);
void *ptr = __vmalloc(c->block_size, gfp_mask);
memalloc_noio_restore(noio_flag);
return ptr;
}
return __vmalloc(c->block_size, gfp_mask, PAGE_KERNEL);
return __vmalloc(c->block_size, gfp_mask);
}
/*

12
drivers/md/md-bitmap.c
View File

@ -324,14 +324,6 @@ static void end_bitmap_write(struct buffer_head *bh, int uptodate)
wake_up(&bitmap->write_wait);
}
/* copied from buffer.c */
static void
__clear_page_buffers(struct page *page)
{
ClearPagePrivate(page);
set_page_private(page, 0);
put_page(page);
}
static void free_buffers(struct page *page)
{
struct buffer_head *bh;
@ -345,7 +337,7 @@ static void free_buffers(struct page *page)
free_buffer_head(bh);
bh = next;
}
__clear_page_buffers(page);
detach_page_private(page);
put_page(page);
}
@ -374,7 +366,7 @@ static int read_page(struct file *file, unsigned long index,
ret = -ENOMEM;
goto out;
}
attach_page_buffers(page, bh);
attach_page_private(page, bh);
blk_cur = index << (PAGE_SHIFT - inode->i_blkbits);
while (bh) {
block = blk_cur;

3
drivers/media/common/videobuf2/videobuf2-dma-sg.c
View File

@ -309,8 +309,7 @@ static void *vb2_dma_sg_vaddr(void *buf_priv)
if (buf->db_attach)
buf->vaddr = dma_buf_vmap(buf->db_attach->dmabuf);
else
buf->vaddr = vm_map_ram(buf->pages,
buf->num_pages, -1, PAGE_KERNEL);
buf->vaddr = vm_map_ram(buf->pages, buf->num_pages, -1);
}
/* add offset in case userptr is not page-aligned */

3
drivers/media/common/videobuf2/videobuf2-vmalloc.c
View File

@ -107,8 +107,7 @@ static void *vb2_vmalloc_get_userptr(struct device *dev, unsigned long vaddr,
buf->vaddr = (__force void *)
ioremap(__pfn_to_phys(nums[0]), size + offset);
} else {
buf->vaddr = vm_map_ram(frame_vector_pages(vec), n_pages, -1,
PAGE_KERNEL);
buf->vaddr = vm_map_ram(frame_vector_pages(vec), n_pages, -1);
}
if (!buf->vaddr)

19
drivers/media/pci/ivtv/ivtv-udma.c
View File

@ -92,7 +92,7 @@ int ivtv_udma_setup(struct ivtv *itv, unsigned long ivtv_dest_addr,
{
struct ivtv_dma_page_info user_dma;
struct ivtv_user_dma *dma = &itv->udma;
int i, err;
int err;
IVTV_DEBUG_DMA("ivtv_udma_setup, dst: 0x%08x\n", (unsigned int)ivtv_dest_addr);
@ -111,16 +111,15 @@ int ivtv_udma_setup(struct ivtv *itv, unsigned long ivtv_dest_addr,
return -EINVAL;
}
/* Get user pages for DMA Xfer */
err = get_user_pages_unlocked(user_dma.uaddr, user_dma.page_count,
/* Pin user pages for DMA Xfer */
err = pin_user_pages_unlocked(user_dma.uaddr, user_dma.page_count,
dma->map, FOLL_FORCE);
if (user_dma.page_count != err) {
IVTV_DEBUG_WARN("failed to map user pages, returned %d instead of %d\n",
err, user_dma.page_count);
if (err >= 0) {
for (i = 0; i < err; i++)
put_page(dma->map[i]);
unpin_user_pages(dma->map, err);
return -EINVAL;
}
return err;
@ -130,9 +129,7 @@ int ivtv_udma_setup(struct ivtv *itv, unsigned long ivtv_dest_addr,
/* Fill SG List with new values */
if (ivtv_udma_fill_sg_list(dma, &user_dma, 0) < 0) {
for (i = 0; i < dma->page_count; i++) {
put_page(dma->map[i]);
}
unpin_user_pages(dma->map, dma->page_count);
dma->page_count = 0;
return -ENOMEM;
}
@ -153,7 +150,6 @@ int ivtv_udma_setup(struct ivtv *itv, unsigned long ivtv_dest_addr,
void ivtv_udma_unmap(struct ivtv *itv)
{
struct ivtv_user_dma *dma = &itv->udma;
int i;
IVTV_DEBUG_INFO("ivtv_unmap_user_dma\n");
@ -169,10 +165,7 @@ void ivtv_udma_unmap(struct ivtv *itv)
/* sync DMA */
ivtv_udma_sync_for_cpu(itv);
/* Release User Pages */
for (i = 0; i < dma->page_count; i++) {
put_page(dma->map[i]);
}
unpin_user_pages(dma->map, dma->page_count);
dma->page_count = 0;
}

17
drivers/media/pci/ivtv/ivtv-yuv.c
View File

@ -30,7 +30,6 @@ static int ivtv_yuv_prep_user_dma(struct ivtv *itv, struct ivtv_user_dma *dma,
struct yuv_playback_info *yi = &itv->yuv_info;
u8 frame = yi->draw_frame;
struct yuv_frame_info *f = &yi->new_frame_info[frame];
int i;
int y_pages, uv_pages;
unsigned long y_buffer_offset, uv_buffer_offset;
int y_decode_height, uv_decode_height, y_size;
@ -62,12 +61,12 @@ static int ivtv_yuv_prep_user_dma(struct ivtv *itv, struct ivtv_user_dma *dma,
ivtv_udma_get_page_info (&y_dma, (unsigned long)args->y_source, 720 * y_decode_height);
ivtv_udma_get_page_info (&uv_dma, (unsigned long)args->uv_source, 360 * uv_decode_height);
/* Get user pages for DMA Xfer */
y_pages = get_user_pages_unlocked(y_dma.uaddr,
/* Pin user pages for DMA Xfer */
y_pages = pin_user_pages_unlocked(y_dma.uaddr,
y_dma.page_count, &dma->map[0], FOLL_FORCE);
uv_pages = 0; /* silence gcc. value is set and consumed only if: */
if (y_pages == y_dma.page_count) {
uv_pages = get_user_pages_unlocked(uv_dma.uaddr,
uv_pages = pin_user_pages_unlocked(uv_dma.uaddr,
uv_dma.page_count, &dma->map[y_pages],
FOLL_FORCE);
}
@ -81,8 +80,7 @@ static int ivtv_yuv_prep_user_dma(struct ivtv *itv, struct ivtv_user_dma *dma,
uv_pages, uv_dma.page_count);
if (uv_pages >= 0) {
for (i = 0; i < uv_pages; i++)
put_page(dma->map[y_pages + i]);
unpin_user_pages(&dma->map[y_pages], uv_pages);
rc = -EFAULT;
} else {
rc = uv_pages;
@ -93,8 +91,7 @@ static int ivtv_yuv_prep_user_dma(struct ivtv *itv, struct ivtv_user_dma *dma,
y_pages, y_dma.page_count);
}
if (y_pages >= 0) {
for (i = 0; i < y_pages; i++)
put_page(dma->map[i]);
unpin_user_pages(dma->map, y_pages);
/*
* Inherit the -EFAULT from rc's
* initialization, but allow it to be
@ -112,9 +109,7 @@ static int ivtv_yuv_prep_user_dma(struct ivtv *itv, struct ivtv_user_dma *dma,
/* Fill & map SG List */
if (ivtv_udma_fill_sg_list (dma, &uv_dma, ivtv_udma_fill_sg_list (dma, &y_dma, 0)) < 0) {
IVTV_DEBUG_WARN("could not allocate bounce buffers for highmem userspace buffers\n");
for (i = 0; i < dma->page_count; i++) {
put_page(dma->map[i]);
}
unpin_user_pages(dma->map, dma->page_count);
dma->page_count = 0;
return -ENOMEM;
}

4
drivers/media/pci/ivtv/ivtvfb.c
View File

@ -281,10 +281,10 @@ static int ivtvfb_prep_dec_dma_to_device(struct ivtv *itv,
/* Map User DMA */
if (ivtv_udma_setup(itv, ivtv_dest_addr, userbuf, size_in_bytes) <= 0) {
mutex_unlock(&itv->udma.lock);
IVTVFB_WARN("ivtvfb_prep_dec_dma_to_device, Error with get_user_pages: %d bytes, %d pages returned\n",
IVTVFB_WARN("ivtvfb_prep_dec_dma_to_device, Error with pin_user_pages: %d bytes, %d pages returned\n",
size_in_bytes, itv->udma.page_count);
/* get_user_pages must have failed completely */
/* pin_user_pages must have failed completely */
return -EIO;
}

4
drivers/mtd/ubi/io.c
View File

@ -1297,7 +1297,7 @@ static int self_check_write(struct ubi_device *ubi, const void *buf, int pnum,
if (!ubi_dbg_chk_io(ubi))
return 0;
buf1 = __vmalloc(len, GFP_NOFS, PAGE_KERNEL);
buf1 = __vmalloc(len, GFP_NOFS);
if (!buf1) {
ubi_err(ubi, "cannot allocate memory to check writes");
return 0;
@ -1361,7 +1361,7 @@ int ubi_self_check_all_ff(struct ubi_device *ubi, int pnum, int offset, int len)
if (!ubi_dbg_chk_io(ubi))
return 0;
buf = __vmalloc(len, GFP_NOFS, PAGE_KERNEL);
buf = __vmalloc(len, GFP_NOFS);
if (!buf) {
ubi_err(ubi, "cannot allocate memory to check for 0xFFs");
return 0;

45
drivers/pcmcia/electra_cf.c
View File

@ -178,10 +178,9 @@ static int electra_cf_probe(struct platform_device *ofdev)
struct device_node *np = ofdev->dev.of_node;
struct electra_cf_socket *cf;
struct resource mem, io;
int status;
int status = -ENOMEM;
const unsigned int *prop;
int err;
struct vm_struct *area;
err = of_address_to_resource(np, 0, &mem);
if (err)
@ -202,30 +201,19 @@ static int electra_cf_probe(struct platform_device *ofdev)
cf->mem_phys = mem.start;
cf->mem_size = PAGE_ALIGN(resource_size(&mem));
cf->mem_base = ioremap(cf->mem_phys, cf->mem_size);
if (!cf->mem_base)
goto out_free_cf;
cf->io_size = PAGE_ALIGN(resource_size(&io));
area = __get_vm_area(cf->io_size, 0, PHB_IO_BASE, PHB_IO_END);
if (area == NULL) {
status = -ENOMEM;
goto fail1;
}
cf->io_virt = (void __iomem *)(area->addr);
cf->io_virt = ioremap_phb(io.start, cf->io_size);
if (!cf->io_virt)
goto out_unmap_mem;
cf->gpio_base = ioremap(0xfc103000, 0x1000);
if (!cf->gpio_base)
goto out_unmap_virt;
dev_set_drvdata(device, cf);
if (!cf->mem_base || !cf->io_virt || !cf->gpio_base ||
(__ioremap_at(io.start, cf->io_virt, cf->io_size,
pgprot_noncached(PAGE_KERNEL)) == NULL)) {
dev_err(device, "can't ioremap ranges\n");
status = -ENOMEM;
goto fail1;
}
cf->io_base = (unsigned long)cf->io_virt - VMALLOC_END;
cf->iomem.start = (unsigned long)cf->mem_base;
cf->iomem.end = (unsigned long)cf->mem_base + (mem.end - mem.start);
cf->iomem.flags = IORESOURCE_MEM;
@ -305,14 +293,13 @@ fail1:
if (cf->irq)
free_irq(cf->irq, cf);
if (cf->io_virt)
__iounmap_at(cf->io_virt, cf->io_size);
if (cf->mem_base)
iounmap(cf->mem_base);
if (cf->gpio_base)
iounmap(cf->gpio_base);
if (area)
device_init_wakeup(&ofdev->dev, 0);
iounmap(cf->gpio_base);
out_unmap_virt:
device_init_wakeup(&ofdev->dev, 0);
iounmap(cf->io_virt);
out_unmap_mem:
iounmap(cf->mem_base);
out_free_cf:
kfree(cf);
return status;
@ -330,7 +317,7 @@ static int electra_cf_remove(struct platform_device *ofdev)
free_irq(cf->irq, cf);
del_timer_sync(&cf->timer);
__iounmap_at(cf->io_virt, cf->io_size);
iounmap(cf->io_virt);
iounmap(cf->mem_base);
iounmap(cf->gpio_base);
release_mem_region(cf->mem_phys, cf->mem_size);

3
drivers/scsi/sd_zbc.c
View File

@ -136,8 +136,7 @@ static void *sd_zbc_alloc_report_buffer(struct scsi_disk *sdkp,
while (bufsize >= SECTOR_SIZE) {
buf = __vmalloc(bufsize,
GFP_KERNEL | __GFP_ZERO | __GFP_NORETRY,
PAGE_KERNEL);
GFP_KERNEL | __GFP_ZERO | __GFP_NORETRY);
if (buf) {
*buflen = bufsize;
return buf;

4
drivers/staging/android/ion/ion_heap.c
View File

@ -99,12 +99,12 @@ int ion_heap_map_user(struct ion_heap *heap, struct ion_buffer *buffer,
static int ion_heap_clear_pages(struct page **pages, int num, pgprot_t pgprot)
{
void *addr = vm_map_ram(pages, num, -1, pgprot);
void *addr = vmap(pages, num, VM_MAP, pgprot);
if (!addr)
return -ENOMEM;
memset(addr, 0, PAGE_SIZE * num);
vm_unmap_ram(addr, num);
vunmap(addr);
return 0;
}

4
drivers/staging/media/ipu3/ipu3-css-pool.h
View File

@ -15,14 +15,12 @@ struct imgu_device;
* @size: size of the buffer in bytes.
* @vaddr: kernel virtual address.
* @daddr: iova dma address to access IPU3.
* @vma: private, a pointer to &struct vm_struct,
* used for imgu_dmamap_free.
*/
struct imgu_css_map {
size_t size;
void *vaddr;
dma_addr_t daddr;
struct vm_struct *vma;
struct page **pages;
};
/**

30
drivers/staging/media/ipu3/ipu3-dmamap.c
View File

@ -96,6 +96,7 @@ void *imgu_dmamap_alloc(struct imgu_device *imgu, struct imgu_css_map *map,
unsigned long shift = iova_shift(&imgu->iova_domain);
struct device *dev = &imgu->pci_dev->dev;
size_t size = PAGE_ALIGN(len);
int count = size >> PAGE_SHIFT;
struct page **pages;
dma_addr_t iovaddr;
struct iova *iova;
@ -114,7 +115,7 @@ void *imgu_dmamap_alloc(struct imgu_device *imgu, struct imgu_css_map *map,
/* Call IOMMU driver to setup pgt */
iovaddr = iova_dma_addr(&imgu->iova_domain, iova);
for (i = 0; i < size / PAGE_SIZE; ++i) {
for (i = 0; i < count; ++i) {
rval = imgu_mmu_map(imgu->mmu, iovaddr,
page_to_phys(pages[i]), PAGE_SIZE);
if (rval)
@ -123,33 +124,23 @@ void *imgu_dmamap_alloc(struct imgu_device *imgu, struct imgu_css_map *map,
iovaddr += PAGE_SIZE;
}
/* Now grab a virtual region */
map->vma = __get_vm_area(size, VM_USERMAP, VMALLOC_START, VMALLOC_END);
if (!map->vma)
map->vaddr = vmap(pages, count, VM_USERMAP, PAGE_KERNEL);
if (!map->vaddr)
goto out_unmap;
map->vma->pages = pages;
/* And map it in KVA */
if (map_vm_area(map->vma, PAGE_KERNEL, pages))
goto out_vunmap;
map->pages = pages;
map->size = size;
map->daddr = iova_dma_addr(&imgu->iova_domain, iova);
map->vaddr = map->vma->addr;
dev_dbg(dev, "%s: allocated %zu @ IOVA %pad @ VA %p\n", __func__,
size, &map->daddr, map->vma->addr);
size, &map->daddr, map->vaddr);
return map->vma->addr;
out_vunmap:
vunmap(map->vma->addr);
return map->vaddr;
out_unmap:
imgu_dmamap_free_buffer(pages, size);
imgu_mmu_unmap(imgu->mmu, iova_dma_addr(&imgu->iova_domain, iova),
i * PAGE_SIZE);
map->vma = NULL;
out_free_iova:
__free_iova(&imgu->iova_domain, iova);
@ -177,8 +168,6 @@ void imgu_dmamap_unmap(struct imgu_device *imgu, struct imgu_css_map *map)
*/
void imgu_dmamap_free(struct imgu_device *imgu, struct imgu_css_map *map)
{
struct vm_struct *area = map->vma;
dev_dbg(&imgu->pci_dev->dev, "%s: freeing %zu @ IOVA %pad @ VA %p\n",
__func__, map->size, &map->daddr, map->vaddr);
@ -187,11 +176,8 @@ void imgu_dmamap_free(struct imgu_device *imgu, struct imgu_css_map *map)
imgu_dmamap_unmap(imgu, map);
if (WARN_ON(!area) || WARN_ON(!area->pages))
return;
imgu_dmamap_free_buffer(area->pages, map->size);
vunmap(map->vaddr);
imgu_dmamap_free_buffer(map->pages, map->size);
map->vaddr = NULL;
}

7
fs/block_dev.c
View File

@ -614,10 +614,9 @@ static int blkdev_readpage(struct file * file, struct page * page)
return block_read_full_page(page, blkdev_get_block);
}
static int blkdev_readpages(struct file *file, struct address_space *mapping,
struct list_head *pages, unsigned nr_pages)
static void blkdev_readahead(struct readahead_control *rac)
{
return mpage_readpages(mapping, pages, nr_pages, blkdev_get_block);
mpage_readahead(rac, blkdev_get_block);
}
static int blkdev_write_begin(struct file *file, struct address_space *mapping,
@ -2085,7 +2084,7 @@ static int blkdev_writepages(struct address_space *mapping,
static const struct address_space_operations def_blk_aops = {
.readpage = blkdev_readpage,
.readpages = blkdev_readpages,
.readahead = blkdev_readahead,
.writepage = blkdev_writepage,
.write_begin = blkdev_write_begin,
.write_end = blkdev_write_end,

4
fs/btrfs/disk-io.c
View File

@ -980,9 +980,7 @@ static void btree_invalidatepage(struct page *page, unsigned int offset,
btrfs_warn(BTRFS_I(page->mapping->host)->root->fs_info,
"page private not zero on page %llu",
(unsigned long long)page_offset(page));
ClearPagePrivate(page);
set_page_private(page, 0);
put_page(page);
detach_page_private(page);
}
}

64
fs/btrfs/extent_io.c
View File

@ -3076,22 +3076,16 @@ static int submit_extent_page(unsigned int opf,
static void attach_extent_buffer_page(struct extent_buffer *eb,
struct page *page)
{
if (!PagePrivate(page)) {
SetPagePrivate(page);
get_page(page);
set_page_private(page, (unsigned long)eb);
} else {
if (!PagePrivate(page))
attach_page_private(page, eb);
else
WARN_ON(page->private != (unsigned long)eb);
}
}
void set_page_extent_mapped(struct page *page)
{
if (!PagePrivate(page)) {
SetPagePrivate(page);
get_page(page);
set_page_private(page, EXTENT_PAGE_PRIVATE);
}
if (!PagePrivate(page))
attach_page_private(page, (void *)EXTENT_PAGE_PRIVATE);
}
static struct extent_map *
@ -4367,51 +4361,32 @@ int extent_writepages(struct address_space *mapping,
return ret;
}
int extent_readpages(struct address_space *mapping, struct list_head *pages,
unsigned nr_pages)
void extent_readahead(struct readahead_control *rac)
{
struct bio *bio = NULL;
unsigned long bio_flags = 0;
struct page *pagepool[16];
struct extent_map *em_cached = NULL;
int nr = 0;
u64 prev_em_start = (u64)-1;
int nr;
while (!list_empty(pages)) {
u64 contig_end = 0;
while ((nr = readahead_page_batch(rac, pagepool))) {
u64 contig_start = page_offset(pagepool[0]);
u64 contig_end = page_offset(pagepool[nr - 1]) + PAGE_SIZE - 1;
for (nr = 0; nr < ARRAY_SIZE(pagepool) && !list_empty(pages);) {
struct page *page = lru_to_page(pages);
ASSERT(contig_start + nr * PAGE_SIZE - 1 == contig_end);
prefetchw(&page->flags);
list_del(&page->lru);
if (add_to_page_cache_lru(page, mapping, page->index,
readahead_gfp_mask(mapping))) {
put_page(page);
break;
}
pagepool[nr++] = page;
contig_end = page_offset(page) + PAGE_SIZE - 1;
}
if (nr) {
u64 contig_start = page_offset(pagepool[0]);
ASSERT(contig_start + nr * PAGE_SIZE - 1 == contig_end);
contiguous_readpages(pagepool, nr, contig_start,
contig_end, &em_cached, &bio, &bio_flags,
&prev_em_start);
}
contiguous_readpages(pagepool, nr, contig_start, contig_end,
&em_cached, &bio, &bio_flags, &prev_em_start);
}
if (em_cached)
free_extent_map(em_cached);
if (bio)
return submit_one_bio(bio, 0, bio_flags);
return 0;
if (bio) {
if (submit_one_bio(bio, 0, bio_flags))
return;
}
}
/*
@ -4929,10 +4904,7 @@ static void btrfs_release_extent_buffer_pages(struct extent_buffer *eb)
* We need to make sure we haven't be attached
* to a new eb.
*/
ClearPagePrivate(page);
set_page_private(page, 0);
/* One for the page private */
put_page(page);
detach_page_private(page);
}
if (mapped)

3
fs/btrfs/extent_io.h
View File

@ -198,8 +198,7 @@ int extent_writepages(struct address_space *mapping,
struct writeback_control *wbc);
int btree_write_cache_pages(struct address_space *mapping,
struct writeback_control *wbc);
int extent_readpages(struct address_space *mapping, struct list_head *pages,
unsigned nr_pages);
void extent_readahead(struct readahead_control *rac);
int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
__u64 start, __u64 len);
void set_page_extent_mapped(struct page *page);

39
fs/btrfs/inode.c
View File

@ -4856,8 +4856,8 @@ static void evict_inode_truncate_pages(struct inode *inode)
/*
* Keep looping until we have no more ranges in the io tree.
* We can have ongoing bios started by readpages (called from readahead)
* that have their endio callback (extent_io.c:end_bio_extent_readpage)
* We can have ongoing bios started by readahead that have
* their endio callback (extent_io.c:end_bio_extent_readpage)
* still in progress (unlocked the pages in the bio but did not yet
* unlocked the ranges in the io tree). Therefore this means some
* ranges can still be locked and eviction started because before
@ -7050,11 +7050,11 @@ static int lock_extent_direct(struct inode *inode, u64 lockstart, u64 lockend,
* for it to complete) and then invalidate the pages for
* this range (through invalidate_inode_pages2_range()),
* but that can lead us to a deadlock with a concurrent
* call to readpages() (a buffered read or a defrag call
* call to readahead (a buffered read or a defrag call
* triggered a readahead) on a page lock due to an
* ordered dio extent we created before but did not have
* yet a corresponding bio submitted (whence it can not
* complete), which makes readpages() wait for that
* complete), which makes readahead wait for that
* ordered extent to complete while holding a lock on
* that page.
*/
@ -8293,21 +8293,16 @@ static int btrfs_writepages(struct address_space *mapping,
return extent_writepages(mapping, wbc);
}
static int
btrfs_readpages(struct file *file, struct address_space *mapping,
struct list_head *pages, unsigned nr_pages)
static void btrfs_readahead(struct readahead_control *rac)
{
return extent_readpages(mapping, pages, nr_pages);
extent_readahead(rac);
}
static int __btrfs_releasepage(struct page *page, gfp_t gfp_flags)
{
int ret = try_release_extent_mapping(page, gfp_flags);
if (ret == 1) {
ClearPagePrivate(page);
set_page_private(page, 0);
put_page(page);
}
if (ret == 1)
detach_page_private(page);
return ret;
}
@ -8329,14 +8324,8 @@ static int btrfs_migratepage(struct address_space *mapping,
if (ret != MIGRATEPAGE_SUCCESS)
return ret;
if (page_has_private(page)) {
ClearPagePrivate(page);
get_page(newpage);
set_page_private(newpage, page_private(page));
set_page_private(page, 0);
put_page(page);
SetPagePrivate(newpage);
}
if (page_has_private(page))
attach_page_private(newpage, detach_page_private(page));
if (PagePrivate2(page)) {
ClearPagePrivate2(page);
@ -8458,11 +8447,7 @@ again:
}
ClearPageChecked(page);
if (PagePrivate(page)) {
ClearPagePrivate(page);
set_page_private(page, 0);
put_page(page);
}
detach_page_private(page);
}
/*
@ -10553,7 +10538,7 @@ static const struct address_space_operations btrfs_aops = {
.readpage = btrfs_readpage,
.writepage = btrfs_writepage,
.writepages = btrfs_writepages,
.readpages = btrfs_readpages,
.readahead = btrfs_readahead,
.direct_IO = btrfs_direct_IO,
.invalidatepage = btrfs_invalidatepage,
.releasepage = btrfs_releasepage,

23
fs/buffer.c
View File

@ -123,14 +123,6 @@ void __wait_on_buffer(struct buffer_head * bh)
}
EXPORT_SYMBOL(__wait_on_buffer);
static void
__clear_page_buffers(struct page *page)
{
ClearPagePrivate(page);
set_page_private(page, 0);
put_page(page);
}
static void buffer_io_error(struct buffer_head *bh, char *msg)
{
if (!test_bit(BH_Quiet, &bh->b_state))
@ -906,7 +898,7 @@ link_dev_buffers(struct page *page, struct buffer_head *head)
bh = bh->b_this_page;
} while (bh);
tail->b_this_page = head;
attach_page_buffers(page, head);
attach_page_private(page, head);
}
static sector_t blkdev_max_block(struct block_device *bdev, unsigned int size)
@ -1154,12 +1146,19 @@ EXPORT_SYMBOL(mark_buffer_dirty);
void mark_buffer_write_io_error(struct buffer_head *bh)
{
struct super_block *sb;
set_buffer_write_io_error(bh);
/* FIXME: do we need to set this in both places? */
if (bh->b_page && bh->b_page->mapping)
mapping_set_error(bh->b_page->mapping, -EIO);
if (bh->b_assoc_map)
mapping_set_error(bh->b_assoc_map, -EIO);
rcu_read_lock();
sb = READ_ONCE(bh->b_bdev->bd_super);
if (sb)
errseq_set(&sb->s_wb_err, -EIO);
rcu_read_unlock();
}
EXPORT_SYMBOL(mark_buffer_write_io_error);
@ -1580,7 +1579,7 @@ void create_empty_buffers(struct page *page,
bh = bh->b_this_page;
} while (bh != head);
}
attach_page_buffers(page, head);
attach_page_private(page, head);
spin_unlock(&page->mapping->private_lock);
}
EXPORT_SYMBOL(create_empty_buffers);
@ -2567,7 +2566,7 @@ static void attach_nobh_buffers(struct page *page, struct buffer_head *head)
bh->b_this_page = head;
bh = bh->b_this_page;
} while (bh != head);
attach_page_buffers(page, head);
attach_page_private(page, head);
spin_unlock(&page->mapping->private_lock);
}
@ -3227,7 +3226,7 @@ drop_buffers(struct page *page, struct buffer_head **buffers_to_free)
bh = next;
} while (bh != head);
*buffers_to_free = head;
__clear_page_buffers(page);
detach_page_private(page);
return 1;
failed:
return 0;

39
fs/erofs/data.c
View File

@ -280,47 +280,36 @@ static int erofs_raw_access_readpage(struct file *file, struct page *page)
return 0;
}
static int erofs_raw_access_readpages(struct file *filp,
struct address_space *mapping,
struct list_head *pages,
unsigned int nr_pages)
static void erofs_raw_access_readahead(struct readahead_control *rac)
{
erofs_off_t last_block;
struct bio *bio = NULL;
gfp_t gfp = readahead_gfp_mask(mapping);
struct page *page = list_last_entry(pages, struct page, lru);
struct page *page;
trace_erofs_readpages(mapping->host, page, nr_pages, true);
for (; nr_pages; --nr_pages) {
page = list_entry(pages->prev, struct page, lru);
trace_erofs_readpages(rac->mapping->host, readahead_index(rac),
readahead_count(rac), true);
while ((page = readahead_page(rac))) {
prefetchw(&page->flags);
list_del(&page->lru);
if (!add_to_page_cache_lru(page, mapping, page->index, gfp)) {
bio = erofs_read_raw_page(bio, mapping, page,
&last_block, nr_pages, true);
bio = erofs_read_raw_page(bio, rac->mapping, page, &last_block,
readahead_count(rac), true);
/* all the page errors are ignored when readahead */
if (IS_ERR(bio)) {
pr_err("%s, readahead error at page %lu of nid %llu\n",
__func__, page->index,
EROFS_I(mapping->host)->nid);
/* all the page errors are ignored when readahead */
if (IS_ERR(bio)) {
pr_err("%s, readahead error at page %lu of nid %llu\n",
__func__, page->index,
EROFS_I(rac->mapping->host)->nid);
bio = NULL;
}
bio = NULL;
}
/* pages could still be locked */
put_page(page);
}
DBG_BUGON(!list_empty(pages));
/* the rare case (end in gaps) */
if (bio)
submit_bio(bio);
return 0;
}
static int erofs_get_block(struct inode *inode, sector_t iblock,
@ -358,7 +347,7 @@ static sector_t erofs_bmap(struct address_space *mapping, sector_t block)
/* for uncompressed (aligned) files and raw access for other files */
const struct address_space_operations erofs_raw_access_aops = {
.readpage = erofs_raw_access_readpage,
.readpages = erofs_raw_access_readpages,
.readahead = erofs_raw_access_readahead,
.bmap = erofs_bmap,
};

2
fs/erofs/decompressor.c
View File

@ -274,7 +274,7 @@ static int z_erofs_decompress_generic(struct z_erofs_decompress_req *rq,
i = 0;
while (1) {
dst = vm_map_ram(rq->out, nrpages_out, -1, PAGE_KERNEL);
dst = vm_map_ram(rq->out, nrpages_out, -1);
/* retry two more times (totally 3 times) */
if (dst || ++i >= 3)

29
fs/erofs/zdata.c
View File

@ -1305,28 +1305,23 @@ static bool should_decompress_synchronously(struct erofs_sb_info *sbi,
return nr <= sbi->max_sync_decompress_pages;
}
static int z_erofs_readpages(struct file *filp, struct address_space *mapping,
struct list_head *pages, unsigned int nr_pages)
static void z_erofs_readahead(struct readahead_control *rac)
{
struct inode *const inode = mapping->host;
struct inode *const inode = rac->mapping->host;
struct erofs_sb_info *const sbi = EROFS_I_SB(inode);
bool sync = should_decompress_synchronously(sbi, nr_pages);
bool sync = should_decompress_synchronously(sbi, readahead_count(rac));
struct z_erofs_decompress_frontend f = DECOMPRESS_FRONTEND_INIT(inode);
gfp_t gfp = mapping_gfp_constraint(mapping, GFP_KERNEL);
struct page *head = NULL;
struct page *page, *head = NULL;
LIST_HEAD(pagepool);
trace_erofs_readpages(mapping->host, lru_to_page(pages),
nr_pages, false);
trace_erofs_readpages(inode, readahead_index(rac),
readahead_count(rac), false);
f.headoffset = (erofs_off_t)lru_to_page(pages)->index << PAGE_SHIFT;
for (; nr_pages; --nr_pages) {
struct page *page = lru_to_page(pages);
f.headoffset = readahead_pos(rac);
while ((page = readahead_page(rac))) {
prefetchw(&page->flags);
list_del(&page->lru);
/*
* A pure asynchronous readahead is indicated if
@ -1335,11 +1330,6 @@ static int z_erofs_readpages(struct file *filp, struct address_space *mapping,
*/
sync &= !(PageReadahead(page) && !head);
if (add_to_page_cache_lru(page, mapping, page->index, gfp)) {
list_add(&page->lru, &pagepool);
continue;
}
set_page_private(page, (unsigned long)head);
head = page;
}
@ -1368,11 +1358,10 @@ static int z_erofs_readpages(struct file *filp, struct address_space *mapping,
/* clean up the remaining free pages */
put_pages_list(&pagepool);
return 0;
}
const struct address_space_operations z_erofs_aops = {
.readpage = z_erofs_readpage,
.readpages = z_erofs_readpages,
.readahead = z_erofs_readahead,
};

7
fs/exfat/inode.c
View File

@ -372,10 +372,9 @@ static int exfat_readpage(struct file *file, struct page *page)
return mpage_readpage(page, exfat_get_block);
}
static int exfat_readpages(struct file *file, struct address_space *mapping,
struct list_head *pages, unsigned int nr_pages)
static void exfat_readahead(struct readahead_control *rac)
{
return mpage_readpages(mapping, pages, nr_pages, exfat_get_block);
mpage_readahead(rac, exfat_get_block);
}
static int exfat_writepage(struct page *page, struct writeback_control *wbc)
@ -502,7 +501,7 @@ int exfat_block_truncate_page(struct inode *inode, loff_t from)
static const struct address_space_operations exfat_aops = {
.readpage = exfat_readpage,
.readpages = exfat_readpages,
.readahead = exfat_readahead,
.writepage = exfat_writepage,
.writepages = exfat_writepages,
.write_begin = exfat_write_begin,

10
fs/ext2/inode.c
View File

@ -877,11 +877,9 @@ static int ext2_readpage(struct file *file, struct page *page)
return mpage_readpage(page, ext2_get_block);
}
static int
ext2_readpages(struct file *file, struct address_space *mapping,
struct list_head *pages, unsigned nr_pages)
static void ext2_readahead(struct readahead_control *rac)
{
return mpage_readpages(mapping, pages, nr_pages, ext2_get_block);
mpage_readahead(rac, ext2_get_block);
}
static int
@ -967,7 +965,7 @@ ext2_dax_writepages(struct address_space *mapping, struct writeback_control *wbc
const struct address_space_operations ext2_aops = {
.readpage = ext2_readpage,
.readpages = ext2_readpages,
.readahead = ext2_readahead,
.writepage = ext2_writepage,
.write_begin = ext2_write_begin,
.write_end = ext2_write_end,
@ -981,7 +979,7 @@ const struct address_space_operations ext2_aops = {
const struct address_space_operations ext2_nobh_aops = {
.readpage = ext2_readpage,
.readpages = ext2_readpages,
.readahead = ext2_readahead,
.writepage = ext2_nobh_writepage,
.write_begin = ext2_nobh_write_begin,
.write_end = nobh_write_end,

5
fs/ext4/ext4.h
View File

@ -3317,9 +3317,8 @@ static inline void ext4_set_de_type(struct super_block *sb,
}
/* readpages.c */
extern int ext4_mpage_readpages(struct address_space *mapping,
struct list_head *pages, struct page *page,
unsigned nr_pages, bool is_readahead);
extern int ext4_mpage_readpages(struct inode *inode,
struct readahead_control *rac, struct page *page);
extern int __init ext4_init_post_read_processing(void);
extern void ext4_exit_post_read_processing(void);

21
fs/ext4/inode.c
View File

@ -3224,23 +3224,20 @@ static int ext4_readpage(struct file *file, struct page *page)
ret = ext4_readpage_inline(inode, page);
if (ret == -EAGAIN)
return ext4_mpage_readpages(page->mapping, NULL, page, 1,
false);
return ext4_mpage_readpages(inode, NULL, page);
return ret;
}
static int
ext4_readpages(struct file *file, struct address_space *mapping,
struct list_head *pages, unsigned nr_pages)
static void ext4_readahead(struct readahead_control *rac)
{
struct inode *inode = mapping->host;
struct inode *inode = rac->mapping->host;
/* If the file has inline data, no need to do readpages. */
/* If the file has inline data, no need to do readahead. */
if (ext4_has_inline_data(inode))
return 0;
return;
return ext4_mpage_readpages(mapping, pages, NULL, nr_pages, true);
ext4_mpage_readpages(inode, rac, NULL);
}
static void ext4_invalidatepage(struct page *page, unsigned int offset,
@ -3605,7 +3602,7 @@ static int ext4_set_page_dirty(struct page *page)
static const struct address_space_operations ext4_aops = {
.readpage = ext4_readpage,
.readpages = ext4_readpages,
.readahead = ext4_readahead,
.writepage = ext4_writepage,
.writepages = ext4_writepages,
.write_begin = ext4_write_begin,
@ -3622,7 +3619,7 @@ static const struct address_space_operations ext4_aops = {
static const struct address_space_operations ext4_journalled_aops = {
.readpage = ext4_readpage,
.readpages = ext4_readpages,
.readahead = ext4_readahead,
.writepage = ext4_writepage,
.writepages = ext4_writepages,
.write_begin = ext4_write_begin,
@ -3638,7 +3635,7 @@ static const struct address_space_operations ext4_journalled_aops = {
static const struct address_space_operations ext4_da_aops = {
.readpage = ext4_readpage,
.readpages = ext4_readpages,
.readahead = ext4_readahead,
.writepage = ext4_writepage,
.writepages = ext4_writepages,
.write_begin = ext4_da_write_begin,

25
fs/ext4/readpage.c
View File

@ -7,8 +7,8 @@
*
* This was originally taken from fs/mpage.c
*
* The intent is the ext4_mpage_readpages() function here is intended
* to replace mpage_readpages() in the general case, not just for
* The ext4_mpage_readpages() function here is intended to
* replace mpage_readahead() in the general case, not just for
* encrypted files. It has some limitations (see below), where it
* will fall back to read_block_full_page(), but these limitations
* should only be hit when page_size != block_size.
@ -221,14 +221,12 @@ static inline loff_t ext4_readpage_limit(struct inode *inode)
return i_size_read(inode);
}
int ext4_mpage_readpages(struct address_space *mapping,
struct list_head *pages, struct page *page,
unsigned nr_pages, bool is_readahead)
int ext4_mpage_readpages(struct inode *inode,
struct readahead_control *rac, struct page *page)
{
struct bio *bio = NULL;
sector_t last_block_in_bio = 0;
struct inode *inode = mapping->host;
const unsigned blkbits = inode->i_blkbits;
const unsigned blocks_per_page = PAGE_SIZE >> blkbits;
const unsigned blocksize = 1 << blkbits;
@ -241,6 +239,7 @@ int ext4_mpage_readpages(struct address_space *mapping,
int length;
unsigned relative_block = 0;
struct ext4_map_blocks map;
unsigned int nr_pages = rac ? readahead_count(rac) : 1;
map.m_pblk = 0;
map.m_lblk = 0;
@ -251,14 +250,9 @@ int ext4_mpage_readpages(struct address_space *mapping,
int fully_mapped = 1;
unsigned first_hole = blocks_per_page;
if (pages) {
page = lru_to_page(pages);
if (rac) {
page = readahead_page(rac);
prefetchw(&page->flags);
list_del(&page->lru);
if (add_to_page_cache_lru(page, mapping, page->index,
readahead_gfp_mask(mapping)))
goto next_page;
}
if (page_has_buffers(page))
@ -381,7 +375,7 @@ int ext4_mpage_readpages(struct address_space *mapping,
bio->bi_iter.bi_sector = blocks[0] << (blkbits - 9);
bio->bi_end_io = mpage_end_io;
bio_set_op_attrs(bio, REQ_OP_READ,
is_readahead ? REQ_RAHEAD : 0);
rac ? REQ_RAHEAD : 0);
}
length = first_hole << blkbits;
@ -406,10 +400,9 @@ int ext4_mpage_readpages(struct address_space *mapping,
else
unlock_page(page);
next_page:
if (pages)
if (rac)
put_page(page);
}
BUG_ON(pages && !list_empty(pages));
if (bio)
submit_bio(bio);
return 0;

35
fs/ext4/verity.c
View File

@ -342,37 +342,6 @@ static int ext4_get_verity_descriptor(struct inode *inode, void *buf,
return desc_size;
}
/*
* Prefetch some pages from the file's Merkle tree.
*
* This is basically a stripped-down version of __do_page_cache_readahead()
* which works on pages past i_size.
*/
static void ext4_merkle_tree_readahead(struct address_space *mapping,
pgoff_t start_index, unsigned long count)
{
LIST_HEAD(pages);
unsigned int nr_pages = 0;
struct page *page;
pgoff_t index;
struct blk_plug plug;
for (index = start_index; index < start_index + count; index++) {
page = xa_load(&mapping->i_pages, index);
if (!page || xa_is_value(page)) {
page = __page_cache_alloc(readahead_gfp_mask(mapping));
if (!page)
break;
page->index = index;
list_add(&page->lru, &pages);
nr_pages++;
}
}
blk_start_plug(&plug);
ext4_mpage_readpages(mapping, &pages, NULL, nr_pages, true);
blk_finish_plug(&plug);
}
static struct page *ext4_read_merkle_tree_page(struct inode *inode,
pgoff_t index,
unsigned long num_ra_pages)
@ -386,8 +355,8 @@ static struct page *ext4_read_merkle_tree_page(struct inode *inode,
if (page)
put_page(page);
else if (num_ra_pages > 1)
ext4_merkle_tree_readahead(inode->i_mapping, index,
num_ra_pages);
page_cache_readahead_unbounded(inode->i_mapping, NULL,
index, num_ra_pages, 0);
page = read_mapping_page(inode->i_mapping, index, NULL);
}
return page;

50
fs/f2fs/data.c
View File

@ -2177,13 +2177,11 @@ out:
* use ->readpage() or do the necessary surgery to decouple ->readpages()
* from read-ahead.
*/
int f2fs_mpage_readpages(struct address_space *mapping,
struct list_head *pages, struct page *page,
unsigned nr_pages, bool is_readahead)
static int f2fs_mpage_readpages(struct inode *inode,
struct readahead_control *rac, struct page *page)
{
struct bio *bio = NULL;
sector_t last_block_in_bio = 0;
struct inode *inode = mapping->host;
struct f2fs_map_blocks map;
#ifdef CONFIG_F2FS_FS_COMPRESSION
struct compress_ctx cc = {
@ -2197,6 +2195,7 @@ int f2fs_mpage_readpages(struct address_space *mapping,
.nr_cpages = 0,
};
#endif
unsigned nr_pages = rac ? readahead_count(rac) : 1;
unsigned max_nr_pages = nr_pages;
int ret = 0;
@ -2210,15 +2209,9 @@ int f2fs_mpage_readpages(struct address_space *mapping,
map.m_may_create = false;
for (; nr_pages; nr_pages--) {
if (pages) {
page = list_last_entry(pages, struct page, lru);
if (rac) {
page = readahead_page(rac);
prefetchw(&page->flags);
list_del(&page->lru);
if (add_to_page_cache_lru(page, mapping,
page_index(page),
readahead_gfp_mask(mapping)))
goto next_page;
}
#ifdef CONFIG_F2FS_FS_COMPRESSION
@ -2228,7 +2221,7 @@ int f2fs_mpage_readpages(struct address_space *mapping,
ret = f2fs_read_multi_pages(&cc, &bio,
max_nr_pages,
&last_block_in_bio,
is_readahead, false);
rac != NULL, false);
f2fs_destroy_compress_ctx(&cc);
if (ret)
goto set_error_page;
@ -2251,7 +2244,7 @@ read_single_page:
#endif
ret = f2fs_read_single_page(inode, page, max_nr_pages, &map,
&bio, &last_block_in_bio, is_readahead);
&bio, &last_block_in_bio, rac);
if (ret) {
#ifdef CONFIG_F2FS_FS_COMPRESSION
set_error_page:
@ -2260,8 +2253,10 @@ set_error_page:
zero_user_segment(page, 0, PAGE_SIZE);
unlock_page(page);
}
#ifdef CONFIG_F2FS_FS_COMPRESSION
next_page:
if (pages)
#endif
if (rac)
put_page(page);
#ifdef CONFIG_F2FS_FS_COMPRESSION
@ -2271,16 +2266,15 @@ next_page:
ret = f2fs_read_multi_pages(&cc, &bio,
max_nr_pages,
&last_block_in_bio,
is_readahead, false);
rac != NULL, false);
f2fs_destroy_compress_ctx(&cc);
}
}
#endif
}
BUG_ON(pages && !list_empty(pages));
if (bio)
__submit_bio(F2FS_I_SB(inode), bio, DATA);
return pages ? 0 : ret;
return ret;
}
static int f2fs_read_data_page(struct file *file, struct page *page)
@ -2299,28 +2293,24 @@ static int f2fs_read_data_page(struct file *file, struct page *page)
if (f2fs_has_inline_data(inode))
ret = f2fs_read_inline_data(inode, page);
if (ret == -EAGAIN)
ret = f2fs_mpage_readpages(page_file_mapping(page),
NULL, page, 1, false);
ret = f2fs_mpage_readpages(inode, NULL, page);
return ret;
}
static int f2fs_read_data_pages(struct file *file,
struct address_space *mapping,
struct list_head *pages, unsigned nr_pages)
static void f2fs_readahead(struct readahead_control *rac)
{
struct inode *inode = mapping->host;
struct page *page = list_last_entry(pages, struct page, lru);
struct inode *inode = rac->mapping->host;
trace_f2fs_readpages(inode, page, nr_pages);
trace_f2fs_readpages(inode, readahead_index(rac), readahead_count(rac));
if (!f2fs_is_compress_backend_ready(inode))
return 0;
return;
/* If the file has inline data, skip readpages */
if (f2fs_has_inline_data(inode))
return 0;
return;
return f2fs_mpage_readpages(mapping, pages, NULL, nr_pages, true);
f2fs_mpage_readpages(inode, rac, NULL);
}
int f2fs_encrypt_one_page(struct f2fs_io_info *fio)
@ -3805,7 +3795,7 @@ static void f2fs_swap_deactivate(struct file *file)
const struct address_space_operations f2fs_dblock_aops = {
.readpage = f2fs_read_data_page,
.readpages = f2fs_read_data_pages,
.readahead = f2fs_readahead,
.writepage = f2fs_write_data_page,
.writepages = f2fs_write_data_pages,
.write_begin = f2fs_write_begin,

14
fs/f2fs/f2fs.h
View File

@ -3051,19 +3051,12 @@ static inline void f2fs_set_page_private(struct page *page,
if (PagePrivate(page))
return;
get_page(page);
SetPagePrivate(page);
set_page_private(page, data);
attach_page_private(page, (void *)data);
}
static inline void f2fs_clear_page_private(struct page *page)
{
if (!PagePrivate(page))
return;
set_page_private(page, 0);
ClearPagePrivate(page);
f2fs_put_page(page, 0);
detach_page_private(page);
}
/*
@ -3373,9 +3366,6 @@ int f2fs_reserve_new_block(struct dnode_of_data *dn);
int f2fs_get_block(struct dnode_of_data *dn, pgoff_t index);
int f2fs_preallocate_blocks(struct kiocb *iocb, struct iov_iter *from);
int f2fs_reserve_block(struct dnode_of_data *dn, pgoff_t index);
int f2fs_mpage_readpages(struct address_space *mapping,
struct list_head *pages, struct page *page,
unsigned nr_pages, bool is_readahead);
struct page *f2fs_get_read_data_page(struct inode *inode, pgoff_t index,
int op_flags, bool for_write);
struct page *f2fs_find_data_page(struct inode *inode, pgoff_t index);

35
fs/f2fs/verity.c
View File

@ -222,37 +222,6 @@ static int f2fs_get_verity_descriptor(struct inode *inode, void *buf,
return size;
}
/*
* Prefetch some pages from the file's Merkle tree.
*
* This is basically a stripped-down version of __do_page_cache_readahead()
* which works on pages past i_size.
*/
static void f2fs_merkle_tree_readahead(struct address_space *mapping,
pgoff_t start_index, unsigned long count)
{
LIST_HEAD(pages);
unsigned int nr_pages = 0;
struct page *page;
pgoff_t index;
struct blk_plug plug;
for (index = start_index; index < start_index + count; index++) {
page = xa_load(&mapping->i_pages, index);
if (!page || xa_is_value(page)) {
page = __page_cache_alloc(readahead_gfp_mask(mapping));
if (!page)
break;
page->index = index;
list_add(&page->lru, &pages);
nr_pages++;
}
}
blk_start_plug(&plug);
f2fs_mpage_readpages(mapping, &pages, NULL, nr_pages, true);
blk_finish_plug(&plug);
}
static struct page *f2fs_read_merkle_tree_page(struct inode *inode,
pgoff_t index,
unsigned long num_ra_pages)
@ -266,8 +235,8 @@ static struct page *f2fs_read_merkle_tree_page(struct inode *inode,
if (page)
put_page(page);
else if (num_ra_pages > 1)
f2fs_merkle_tree_readahead(inode->i_mapping, index,
num_ra_pages);
page_cache_readahead_unbounded(inode->i_mapping, NULL,
index, num_ra_pages, 0);
page = read_mapping_page(inode->i_mapping, index, NULL);
}
return page;

7
fs/fat/inode.c
View File

@ -210,10 +210,9 @@ static int fat_readpage(struct file *file, struct page *page)
return mpage_readpage(page, fat_get_block);
}
static int fat_readpages(struct file *file, struct address_space *mapping,
struct list_head *pages, unsigned nr_pages)
static void fat_readahead(struct readahead_control *rac)
{
return mpage_readpages(mapping, pages, nr_pages, fat_get_block);
mpage_readahead(rac, fat_get_block);
}
static void fat_write_failed(struct address_space *mapping, loff_t to)
@ -344,7 +343,7 @@ int fat_block_truncate_page(struct inode *inode, loff_t from)
static const struct address_space_operations fat_aops = {
.readpage = fat_readpage,
.readpages = fat_readpages,
.readahead = fat_readahead,
.writepage = fat_writepage,
.writepages = fat_writepages,
.write_begin = fat_write_begin,

1
fs/file_table.c
View File

@ -198,6 +198,7 @@ static struct file *alloc_file(const struct path *path, int flags,
file->f_inode = path->dentry->d_inode;
file->f_mapping = path->dentry->d_inode->i_mapping;
file->f_wb_err = filemap_sample_wb_err(file->f_mapping);
file->f_sb_err = file_sample_sb_err(file);
if ((file->f_mode & FMODE_READ) &&
likely(fop->read || fop->read_iter))
file->f_mode |= FMODE_CAN_READ;

1
fs/fs-writeback.c
View File

@ -1070,7 +1070,6 @@ static void bdi_split_work_to_wbs(struct backing_dev_info *bdi,
static unsigned long get_nr_dirty_pages(void)
{
return global_node_page_state(NR_FILE_DIRTY) +
global_node_page_state(NR_UNSTABLE_NFS) +
get_nr_dirty_inodes();
}

100
fs/fuse/file.c
View File

@ -915,84 +915,40 @@ static void fuse_send_readpages(struct fuse_io_args *ia, struct file *file)
fuse_readpages_end(fc, &ap->args, err);
}
struct fuse_fill_data {
struct fuse_io_args *ia;
struct file *file;
struct inode *inode;
unsigned int nr_pages;
unsigned int max_pages;
};
static int fuse_readpages_fill(void *_data, struct page *page)
static void fuse_readahead(struct readahead_control *rac)
{
struct fuse_fill_data *data = _data;
struct fuse_io_args *ia = data->ia;
struct fuse_args_pages *ap = &ia->ap;
struct inode *inode = data->inode;
struct inode *inode = rac->mapping->host;
struct fuse_conn *fc = get_fuse_conn(inode);
unsigned int i, max_pages, nr_pages = 0;
fuse_wait_on_page_writeback(inode, page->index);
if (ap->num_pages &&
(ap->num_pages == fc->max_pages ||
(ap->num_pages + 1) * PAGE_SIZE > fc->max_read ||
ap->pages[ap->num_pages - 1]->index + 1 != page->index)) {
data->max_pages = min_t(unsigned int, data->nr_pages,
fc->max_pages);
fuse_send_readpages(ia, data->file);
data->ia = ia = fuse_io_alloc(NULL, data->max_pages);
if (!ia) {
unlock_page(page);
return -ENOMEM;
}
ap = &ia->ap;
}
if (WARN_ON(ap->num_pages >= data->max_pages)) {
unlock_page(page);
fuse_io_free(ia);
return -EIO;
}
get_page(page);
ap->pages[ap->num_pages] = page;
ap->descs[ap->num_pages].length = PAGE_SIZE;
ap->num_pages++;
data->nr_pages--;
return 0;
}
static int fuse_readpages(struct file *file, struct address_space *mapping,
struct list_head *pages, unsigned nr_pages)
{
struct inode *inode = mapping->host;
struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_fill_data data;
int err;
err = -EIO;
if (is_bad_inode(inode))
goto out;
return;
data.file = file;
data.inode = inode;
data.nr_pages = nr_pages;
data.max_pages = min_t(unsigned int, nr_pages, fc->max_pages);
;
data.ia = fuse_io_alloc(NULL, data.max_pages);
err = -ENOMEM;
if (!data.ia)
goto out;
max_pages = min_t(unsigned int, fc->max_pages,
fc->max_read / PAGE_SIZE);
err = read_cache_pages(mapping, pages, fuse_readpages_fill, &data);
if (!err) {
if (data.ia->ap.num_pages)
fuse_send_readpages(data.ia, file);
else
fuse_io_free(data.ia);
for (;;) {
struct fuse_io_args *ia;
struct fuse_args_pages *ap;
nr_pages = readahead_count(rac) - nr_pages;
if (nr_pages > max_pages)
nr_pages = max_pages;
if (nr_pages == 0)
break;
ia = fuse_io_alloc(NULL, nr_pages);
if (!ia)
return;
ap = &ia->ap;
nr_pages = __readahead_batch(rac, ap->pages, nr_pages);
for (i = 0; i < nr_pages; i++) {
fuse_wait_on_page_writeback(inode,
readahead_index(rac) + i);
ap->descs[i].length = PAGE_SIZE;
}
ap->num_pages = nr_pages;
fuse_send_readpages(ia, rac->file);
}
out:
return err;
}
static ssize_t fuse_cache_read_iter(struct kiocb *iocb, struct iov_iter *to)
@ -3373,10 +3329,10 @@ static const struct file_operations fuse_file_operations = {
static const struct address_space_operations fuse_file_aops = {
.readpage = fuse_readpage,
.readahead = fuse_readahead,
.writepage = fuse_writepage,
.writepages = fuse_writepages,
.launder_page = fuse_launder_page,
.readpages = fuse_readpages,
.set_page_dirty = __set_page_dirty_nobuffers,
.bmap = fuse_bmap,
.direct_IO = fuse_direct_IO,

23
fs/gfs2/aops.c
View File

@ -577,7 +577,7 @@ int gfs2_internal_read(struct gfs2_inode *ip, char *buf, loff_t *pos,
}
/**
* gfs2_readpages - Read a bunch of pages at once
* gfs2_readahead - Read a bunch of pages at once
* @file: The file to read from
* @mapping: Address space info
* @pages: List of pages to read
@ -590,31 +590,24 @@ int gfs2_internal_read(struct gfs2_inode *ip, char *buf, loff_t *pos,
* obviously not something we'd want to do on too regular a basis.
* Any I/O we ignore at this time will be done via readpage later.
* 2. We don't handle stuffed files here we let readpage do the honours.
* 3. mpage_readpages() does most of the heavy lifting in the common case.
* 3. mpage_readahead() does most of the heavy lifting in the common case.
* 4. gfs2_block_map() is relied upon to set BH_Boundary in the right places.
*/
static int gfs2_readpages(struct file *file, struct address_space *mapping,
struct list_head *pages, unsigned nr_pages)
static void gfs2_readahead(struct readahead_control *rac)
{
struct inode *inode = mapping->host;
struct inode *inode = rac->mapping->host;
struct gfs2_inode *ip = GFS2_I(inode);
struct gfs2_sbd *sdp = GFS2_SB(inode);
struct gfs2_holder gh;
int ret;
gfs2_holder_init(ip->i_gl, LM_ST_SHARED, 0, &gh);
ret = gfs2_glock_nq(&gh);
if (unlikely(ret))
if (gfs2_glock_nq(&gh))
goto out_uninit;
if (!gfs2_is_stuffed(ip))
ret = mpage_readpages(mapping, pages, nr_pages, gfs2_block_map);
mpage_readahead(rac, gfs2_block_map);
gfs2_glock_dq(&gh);
out_uninit:
gfs2_holder_uninit(&gh);
if (unlikely(gfs2_withdrawn(sdp)))
ret = -EIO;
return ret;
}
/**
@ -833,7 +826,7 @@ static const struct address_space_operations gfs2_aops = {
.writepage = gfs2_writepage,
.writepages = gfs2_writepages,
.readpage = gfs2_readpage,
.readpages = gfs2_readpages,
.readahead = gfs2_readahead,
.bmap = gfs2_bmap,
.invalidatepage = gfs2_invalidatepage,
.releasepage = gfs2_releasepage,
@ -847,7 +840,7 @@ static const struct address_space_operations gfs2_jdata_aops = {
.writepage = gfs2_jdata_writepage,
.writepages = gfs2_jdata_writepages,
.readpage = gfs2_readpage,
.readpages = gfs2_readpages,
.readahead = gfs2_readahead,
.set_page_dirty = jdata_set_page_dirty,
.bmap = gfs2_bmap,
.invalidatepage = gfs2_invalidatepage,

9
fs/gfs2/dir.c
View File

@ -354,7 +354,7 @@ static __be64 *gfs2_dir_get_hash_table(struct gfs2_inode *ip)
hc = kmalloc(hsize, GFP_NOFS | __GFP_NOWARN);
if (hc == NULL)
hc = __vmalloc(hsize, GFP_NOFS, PAGE_KERNEL);
hc = __vmalloc(hsize, GFP_NOFS);
if (hc == NULL)
return ERR_PTR(-ENOMEM);
@ -1166,7 +1166,7 @@ static int dir_double_exhash(struct gfs2_inode *dip)
hc2 = kmalloc_array(hsize_bytes, 2, GFP_NOFS | __GFP_NOWARN);
if (hc2 == NULL)
hc2 = __vmalloc(hsize_bytes * 2, GFP_NOFS, PAGE_KERNEL);
hc2 = __vmalloc(hsize_bytes * 2, GFP_NOFS);
if (!hc2)
return -ENOMEM;
@ -1327,7 +1327,7 @@ static void *gfs2_alloc_sort_buffer(unsigned size)
if (size < KMALLOC_MAX_SIZE)
ptr = kmalloc(size, GFP_NOFS | __GFP_NOWARN);
if (!ptr)
ptr = __vmalloc(size, GFP_NOFS, PAGE_KERNEL);
ptr = __vmalloc(size, GFP_NOFS);
return ptr;
}
@ -1987,8 +1987,7 @@ static int leaf_dealloc(struct gfs2_inode *dip, u32 index, u32 len,
ht = kzalloc(size, GFP_NOFS | __GFP_NOWARN);
if (ht == NULL)
ht = __vmalloc(size, GFP_NOFS | __GFP_NOWARN | __GFP_ZERO,
PAGE_KERNEL);
ht = __vmalloc(size, GFP_NOFS | __GFP_NOWARN | __GFP_ZERO);
if (!ht)
return -ENOMEM;

2
fs/gfs2/quota.c
View File

@ -1365,7 +1365,7 @@ int gfs2_quota_init(struct gfs2_sbd *sdp)
sdp->sd_quota_bitmap = kzalloc(bm_size, GFP_NOFS | __GFP_NOWARN);
if (sdp->sd_quota_bitmap == NULL)
sdp->sd_quota_bitmap = __vmalloc(bm_size, GFP_NOFS |
__GFP_ZERO, PAGE_KERNEL);
__GFP_ZERO);
if (!sdp->sd_quota_bitmap)
return error;

7
fs/hpfs/file.c
View File

@ -125,10 +125,9 @@ static int hpfs_writepage(struct page *page, struct writeback_control *wbc)
return block_write_full_page(page, hpfs_get_block, wbc);
}
static int hpfs_readpages(struct file *file, struct address_space *mapping,
struct list_head *pages, unsigned nr_pages)
static void hpfs_readahead(struct readahead_control *rac)
{
return mpage_readpages(mapping, pages, nr_pages, hpfs_get_block);
mpage_readahead(rac, hpfs_get_block);
}
static int hpfs_writepages(struct address_space *mapping,
@ -198,7 +197,7 @@ static int hpfs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
const struct address_space_operations hpfs_aops = {
.readpage = hpfs_readpage,
.writepage = hpfs_writepage,
.readpages = hpfs_readpages,
.readahead = hpfs_readahead,
.writepages = hpfs_writepages,
.write_begin = hpfs_write_begin,
.write_end = hpfs_write_end,

111
fs/iomap/buffered-io.c
View File

@ -59,24 +59,19 @@ iomap_page_create(struct inode *inode, struct page *page)
* migrate_page_move_mapping() assumes that pages with private data have
* their count elevated by 1.
*/
get_page(page);
set_page_private(page, (unsigned long)iop);
SetPagePrivate(page);
attach_page_private(page, iop);
return iop;
}
static void
iomap_page_release(struct page *page)
{
struct iomap_page *iop = to_iomap_page(page);
struct iomap_page *iop = detach_page_private(page);
if (!iop)
return;
WARN_ON_ONCE(atomic_read(&iop->read_count));
WARN_ON_ONCE(atomic_read(&iop->write_count));
ClearPagePrivate(page);
set_page_private(page, 0);
put_page(page);
kfree(iop);
}
@ -214,9 +209,8 @@ iomap_read_end_io(struct bio *bio)
struct iomap_readpage_ctx {
struct page *cur_page;
bool cur_page_in_bio;
bool is_readahead;
struct bio *bio;
struct list_head *pages;
struct readahead_control *rac;
};
static void
@ -308,7 +302,7 @@ iomap_readpage_actor(struct inode *inode, loff_t pos, loff_t length, void *data,
if (ctx->bio)
submit_bio(ctx->bio);
if (ctx->is_readahead) /* same as readahead_gfp_mask */
if (ctx->rac) /* same as readahead_gfp_mask */
gfp |= __GFP_NORETRY | __GFP_NOWARN;
ctx->bio = bio_alloc(gfp, min(BIO_MAX_PAGES, nr_vecs));
/*
@ -319,7 +313,7 @@ iomap_readpage_actor(struct inode *inode, loff_t pos, loff_t length, void *data,
if (!ctx->bio)
ctx->bio = bio_alloc(orig_gfp, 1);
ctx->bio->bi_opf = REQ_OP_READ;
if (ctx->is_readahead)
if (ctx->rac)
ctx->bio->bi_opf |= REQ_RAHEAD;
ctx->bio->bi_iter.bi_sector = sector;
bio_set_dev(ctx->bio, iomap->bdev);
@ -367,7 +361,7 @@ iomap_readpage(struct page *page, const struct iomap_ops *ops)
}
/*
* Just like mpage_readpages and block_read_full_page we always
* Just like mpage_readahead and block_read_full_page we always
* return 0 and just mark the page as PageError on errors. This
* should be cleaned up all through the stack eventually.
*/
@ -375,36 +369,8 @@ iomap_readpage(struct page *page, const struct iomap_ops *ops)
}
EXPORT_SYMBOL_GPL(iomap_readpage);
static struct page *
iomap_next_page(struct inode *inode, struct list_head *pages, loff_t pos,
loff_t length, loff_t *done)
{
while (!list_empty(pages)) {
struct page *page = lru_to_page(pages);
if (page_offset(page) >= (u64)pos + length)
break;
list_del(&page->lru);
if (!add_to_page_cache_lru(page, inode->i_mapping, page->index,
GFP_NOFS))
return page;
/*
* If we already have a page in the page cache at index we are
* done. Upper layers don't care if it is uptodate after the
* readpages call itself as every page gets checked again once
* actually needed.
*/
*done += PAGE_SIZE;
put_page(page);
}
return NULL;
}
static loff_t
iomap_readpages_actor(struct inode *inode, loff_t pos, loff_t length,
iomap_readahead_actor(struct inode *inode, loff_t pos, loff_t length,
void *data, struct iomap *iomap, struct iomap *srcmap)
{
struct iomap_readpage_ctx *ctx = data;
@ -418,10 +384,7 @@ iomap_readpages_actor(struct inode *inode, loff_t pos, loff_t length,
ctx->cur_page = NULL;
}
if (!ctx->cur_page) {
ctx->cur_page = iomap_next_page(inode, ctx->pages,
pos, length, &done);
if (!ctx->cur_page)
break;
ctx->cur_page = readahead_page(ctx->rac);
ctx->cur_page_in_bio = false;
}
ret = iomap_readpage_actor(inode, pos + done, length - done,
@ -431,32 +394,43 @@ iomap_readpages_actor(struct inode *inode, loff_t pos, loff_t length,
return done;
}
int
iomap_readpages(struct address_space *mapping, struct list_head *pages,
unsigned nr_pages, const struct iomap_ops *ops)
/**
* iomap_readahead - Attempt to read pages from a file.
* @rac: Describes the pages to be read.
* @ops: The operations vector for the filesystem.
*
* This function is for filesystems to call to implement their readahead
* address_space operation.
*
* Context: The @ops callbacks may submit I/O (eg to read the addresses of
* blocks from disc), and may wait for it. The caller may be trying to
* access a different page, and so sleeping excessively should be avoided.
* It may allocate memory, but should avoid costly allocations. This
* function is called with memalloc_nofs set, so allocations will not cause
* the filesystem to be reentered.
*/
void iomap_readahead(struct readahead_control *rac, const struct iomap_ops *ops)
{
struct inode *inode = rac->mapping->host;
loff_t pos = readahead_pos(rac);
loff_t length = readahead_length(rac);
struct iomap_readpage_ctx ctx = {
.pages = pages,
.is_readahead = true,
.rac = rac,
};
loff_t pos = page_offset(list_entry(pages->prev, struct page, lru));
loff_t last = page_offset(list_entry(pages->next, struct page, lru));
loff_t length = last - pos + PAGE_SIZE, ret = 0;
trace_iomap_readpages(mapping->host, nr_pages);
trace_iomap_readahead(inode, readahead_count(rac));
while (length > 0) {
ret = iomap_apply(mapping->host, pos, length, 0, ops,
&ctx, iomap_readpages_actor);
loff_t ret = iomap_apply(inode, pos, length, 0, ops,
&ctx, iomap_readahead_actor);
if (ret <= 0) {
WARN_ON_ONCE(ret == 0);
goto done;
break;
}
pos += ret;
length -= ret;
}
ret = 0;
done:
if (ctx.bio)
submit_bio(ctx.bio);
if (ctx.cur_page) {
@ -464,15 +438,8 @@ done:
unlock_page(ctx.cur_page);
put_page(ctx.cur_page);
}
/*
* Check that we didn't lose a page due to the arcance calling
* conventions..
*/
WARN_ON_ONCE(!ret && !list_empty(ctx.pages));
return ret;
}
EXPORT_SYMBOL_GPL(iomap_readpages);
EXPORT_SYMBOL_GPL(iomap_readahead);
/*
* iomap_is_partially_uptodate checks whether blocks within a page are
@ -554,14 +521,8 @@ iomap_migrate_page(struct address_space *mapping, struct page *newpage,
if (ret != MIGRATEPAGE_SUCCESS)
return ret;
if (page_has_private(page)) {
ClearPagePrivate(page);
get_page(newpage);
set_page_private(newpage, page_private(page));
set_page_private(page, 0);
put_page(page);
SetPagePrivate(newpage);
}
if (page_has_private(page))
attach_page_private(newpage, detach_page_private(page));
if (mode != MIGRATE_SYNC_NO_COPY)
migrate_page_copy(newpage, page);

2
fs/iomap/trace.h
View File

@ -39,7 +39,7 @@ DEFINE_EVENT(iomap_readpage_class, name, \
TP_PROTO(struct inode *inode, int nr_pages), \
TP_ARGS(inode, nr_pages))
DEFINE_READPAGE_EVENT(iomap_readpage);
DEFINE_READPAGE_EVENT(iomap_readpages);
DEFINE_READPAGE_EVENT(iomap_readahead);
DECLARE_EVENT_CLASS(iomap_range_class,
TP_PROTO(struct inode *inode, unsigned long off, unsigned int len),

7
fs/isofs/inode.c
View File

@ -1185,10 +1185,9 @@ static int isofs_readpage(struct file *file, struct page *page)
return mpage_readpage(page, isofs_get_block);
}
static int isofs_readpages(struct file *file, struct address_space *mapping,
struct list_head *pages, unsigned nr_pages)
static void isofs_readahead(struct readahead_control *rac)
{
return mpage_readpages(mapping, pages, nr_pages, isofs_get_block);
mpage_readahead(rac, isofs_get_block);
}
static sector_t _isofs_bmap(struct address_space *mapping, sector_t block)
@ -1198,7 +1197,7 @@ static sector_t _isofs_bmap(struct address_space *mapping, sector_t block)
static const struct address_space_operations isofs_aops = {
.readpage = isofs_readpage,
.readpages = isofs_readpages,
.readahead = isofs_readahead,
.bmap = _isofs_bmap
};

7
fs/jfs/inode.c
View File

@ -296,10 +296,9 @@ static int jfs_readpage(struct file *file, struct page *page)
return mpage_readpage(page, jfs_get_block);
}
static int jfs_readpages(struct file *file, struct address_space *mapping,
struct list_head *pages, unsigned nr_pages)
static void jfs_readahead(struct readahead_control *rac)
{
return mpage_readpages(mapping, pages, nr_pages, jfs_get_block);
mpage_readahead(rac, jfs_get_block);
}
static void jfs_write_failed(struct address_space *mapping, loff_t to)
@ -358,7 +357,7 @@ static ssize_t jfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
const struct address_space_operations jfs_aops = {
.readpage = jfs_readpage,
.readpages = jfs_readpages,
.readahead = jfs_readahead,
.writepage = jfs_writepage,
.writepages = jfs_writepages,
.write_begin = jfs_write_begin,

38
fs/mpage.c
View File

@ -91,7 +91,7 @@ mpage_alloc(struct block_device *bdev,
}
/*
* support function for mpage_readpages. The fs supplied get_block might
* support function for mpage_readahead. The fs supplied get_block might
* return an up to date buffer. This is used to map that buffer into
* the page, which allows readpage to avoid triggering a duplicate call
* to get_block.
@ -338,13 +338,8 @@ confused:
}
/**
* mpage_readpages - populate an address space with some pages & start reads against them
* @mapping: the address_space
* @pages: The address of a list_head which contains the target pages. These
* pages have their ->index populated and are otherwise uninitialised.
* The page at @pages->prev has the lowest file offset, and reads should be
* issued in @pages->prev to @pages->next order.
* @nr_pages: The number of pages at *@pages
* mpage_readahead - start reads against pages
* @rac: Describes which pages to read.
* @get_block: The filesystem's block mapper function.
*
* This function walks the pages and the blocks within each page, building and
@ -381,36 +376,25 @@ confused:
*
* This all causes the disk requests to be issued in the correct order.
*/
int
mpage_readpages(struct address_space *mapping, struct list_head *pages,
unsigned nr_pages, get_block_t get_block)
void mpage_readahead(struct readahead_control *rac, get_block_t get_block)
{
struct page *page;
struct mpage_readpage_args args = {
.get_block = get_block,
.is_readahead = true,
};
unsigned page_idx;
for (page_idx = 0; page_idx < nr_pages; page_idx++) {
struct page *page = lru_to_page(pages);
while ((page = readahead_page(rac))) {
prefetchw(&page->flags);
list_del(&page->lru);
if (!add_to_page_cache_lru(page, mapping,
page->index,
readahead_gfp_mask(mapping))) {
args.page = page;
args.nr_pages = nr_pages - page_idx;
args.bio = do_mpage_readpage(&args);
}
args.page = page;
args.nr_pages = readahead_count(rac);
args.bio = do_mpage_readpage(&args);
put_page(page);
}
BUG_ON(!list_empty(pages));
if (args.bio)
mpage_bio_submit(REQ_OP_READ, REQ_RAHEAD, args.bio);
return 0;
}
EXPORT_SYMBOL(mpage_readpages);
EXPORT_SYMBOL(mpage_readahead);
/*
* This isn't called much at all
@ -563,7 +547,7 @@ static int __mpage_writepage(struct page *page, struct writeback_control *wbc,
* Page has buffers, but they are all unmapped. The page was
* created by pagein or read over a hole which was handled by
* block_read_full_page(). If this address_space is also
* using mpage_readpages then this can rarely happen.
* using mpage_readahead then this can rarely happen.
*/
goto confused;
}

2
fs/nfs/blocklayout/extent_tree.c
View File

@ -582,7 +582,7 @@ retry:
if (!arg->layoutupdate_pages)
return -ENOMEM;
start_p = __vmalloc(buffer_size, GFP_NOFS, PAGE_KERNEL);
start_p = __vmalloc(buffer_size, GFP_NOFS);
if (!start_p) {
kfree(arg->layoutupdate_pages);
return -ENOMEM;

10
fs/nfs/internal.h
View File

@ -668,7 +668,8 @@ void nfs_super_set_maxbytes(struct super_block *sb, __u64 maxfilesize)
}
/*
* Record the page as unstable and mark its inode as dirty.
* Record the page as unstable (an extra writeback period) and mark its
* inode as dirty.
*/
static inline
void nfs_mark_page_unstable(struct page *page, struct nfs_commit_info *cinfo)
@ -676,8 +677,11 @@ void nfs_mark_page_unstable(struct page *page, struct nfs_commit_info *cinfo)
if (!cinfo->dreq) {
struct inode *inode = page_file_mapping(page)->host;
inc_node_page_state(page, NR_UNSTABLE_NFS);
inc_wb_stat(&inode_to_bdi(inode)->wb, WB_RECLAIMABLE);
/* This page is really still in write-back - just that the
* writeback is happening on the server now.
*/
inc_node_page_state(page, NR_WRITEBACK);
inc_wb_stat(&inode_to_bdi(inode)->wb, WB_WRITEBACK);
__mark_inode_dirty(inode, I_DIRTY_DATASYNC);
}
}

4
fs/nfs/write.c
View File

@ -946,9 +946,9 @@ nfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg,
static void
nfs_clear_page_commit(struct page *page)
{
dec_node_page_state(page, NR_UNSTABLE_NFS);
dec_node_page_state(page, NR_WRITEBACK);
dec_wb_stat(&inode_to_bdi(page_file_mapping(page)->host)->wb,
WB_RECLAIMABLE);
WB_WRITEBACK);
}
/* Called holding the request lock on @req */

9
fs/nfsd/vfs.c
View File

@ -979,12 +979,13 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct nfsd_file *nf,
if (test_bit(RQ_LOCAL, &rqstp->rq_flags))
/*
* We want less throttling in balance_dirty_pages()
* and shrink_inactive_list() so that nfs to
* We want throttling in balance_dirty_pages()
* and shrink_inactive_list() to only consider
* the backingdev we are writing to, so that nfs to
* localhost doesn't cause nfsd to lock up due to all
* the client's dirty pages or its congested queue.
*/
current->flags |= PF_LESS_THROTTLE;
current->flags |= PF_LOCAL_THROTTLE;
exp = fhp->fh_export;
use_wgather = (rqstp->rq_vers == 2) && EX_WGATHER(exp);
@ -1037,7 +1038,7 @@ out_nfserr:
nfserr = nfserrno(host_err);
}
if (test_bit(RQ_LOCAL, &rqstp->rq_flags))
current_restore_flags(pflags, PF_LESS_THROTTLE);
current_restore_flags(pflags, PF_LOCAL_THROTTLE);
return nfserr;
}

15
fs/nilfs2/inode.c
View File

@ -145,18 +145,9 @@ static int nilfs_readpage(struct file *file, struct page *page)
return mpage_readpage(page, nilfs_get_block);
}
/**
* nilfs_readpages() - implement readpages() method of nilfs_aops {}
* address_space_operations.
* @file - file struct of the file to be read
* @mapping - address_space struct used for reading multiple pages
* @pages - the pages to be read
* @nr_pages - number of pages to be read
*/
static int nilfs_readpages(struct file *file, struct address_space *mapping,
struct list_head *pages, unsigned int nr_pages)
static void nilfs_readahead(struct readahead_control *rac)
{
return mpage_readpages(mapping, pages, nr_pages, nilfs_get_block);
mpage_readahead(rac, nilfs_get_block);
}
static int nilfs_writepages(struct address_space *mapping,
@ -308,7 +299,7 @@ const struct address_space_operations nilfs_aops = {
.readpage = nilfs_readpage,
.writepages = nilfs_writepages,
.set_page_dirty = nilfs_set_page_dirty,
.readpages = nilfs_readpages,
.readahead = nilfs_readahead,
.write_begin = nilfs_write_begin,
.write_end = nilfs_write_end,
/* .releasepage = nilfs_releasepage, */

2
fs/ntfs/aops.c
View File

@ -1732,7 +1732,7 @@ void mark_ntfs_record_dirty(struct page *page, const unsigned int ofs) {
bh = bh->b_this_page;
} while (bh);
tail->b_this_page = head;
attach_page_buffers(page, head);
attach_page_private(page, head);
} else
buffers_to_free = bh;
}

2
fs/ntfs/malloc.h
View File

@ -34,7 +34,7 @@ static inline void *__ntfs_malloc(unsigned long size, gfp_t gfp_mask)
/* return (void *)__get_free_page(gfp_mask); */
}
if (likely((size >> PAGE_SHIFT) < totalram_pages()))
return __vmalloc(size, gfp_mask, PAGE_KERNEL);
return __vmalloc(size, gfp_mask);
return NULL;
}

2
fs/ntfs/mft.c
View File

@ -504,7 +504,7 @@ int ntfs_sync_mft_mirror(ntfs_volume *vol, const unsigned long mft_no,
bh = bh->b_this_page;
} while (bh);
tail->b_this_page = head;
attach_page_buffers(page, head);
attach_page_private(page, head);
}
bh = head = page_buffers(page);
BUG_ON(!bh);

34
fs/ocfs2/aops.c
View File

@ -350,14 +350,11 @@ out:
* grow out to a tree. If need be, detecting boundary extents could
* trivially be added in a future version of ocfs2_get_block().
*/
static int ocfs2_readpages(struct file *filp, struct address_space *mapping,
struct list_head *pages, unsigned nr_pages)
static void ocfs2_readahead(struct readahead_control *rac)
{
int ret, err = -EIO;
struct inode *inode = mapping->host;
int ret;
struct inode *inode = rac->mapping->host;
struct ocfs2_inode_info *oi = OCFS2_I(inode);
loff_t start;
struct page *last;
/*
* Use the nonblocking flag for the dlm code to avoid page
@ -365,36 +362,31 @@ static int ocfs2_readpages(struct file *filp, struct address_space *mapping,
*/
ret = ocfs2_inode_lock_full(inode, NULL, 0, OCFS2_LOCK_NONBLOCK);
if (ret)
return err;
return;
if (down_read_trylock(&oi->ip_alloc_sem) == 0) {
ocfs2_inode_unlock(inode, 0);
return err;
}
if (down_read_trylock(&oi->ip_alloc_sem) == 0)
goto out_unlock;
/*
* Don't bother with inline-data. There isn't anything
* to read-ahead in that case anyway...
*/
if (oi->ip_dyn_features & OCFS2_INLINE_DATA_FL)
goto out_unlock;
goto out_up;
/*
* Check whether a remote node truncated this file - we just
* drop out in that case as it's not worth handling here.
*/
last = lru_to_page(pages);
start = (loff_t)last->index << PAGE_SHIFT;
if (start >= i_size_read(inode))
goto out_unlock;
if (readahead_pos(rac) >= i_size_read(inode))
goto out_up;
err = mpage_readpages(mapping, pages, nr_pages, ocfs2_get_block);
mpage_readahead(rac, ocfs2_get_block);
out_unlock:
out_up:
up_read(&oi->ip_alloc_sem);
out_unlock:
ocfs2_inode_unlock(inode, 0);
return err;
}
/* Note: Because we don't support holes, our allocation has
@ -2474,7 +2466,7 @@ static ssize_t ocfs2_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
const struct address_space_operations ocfs2_aops = {
.readpage = ocfs2_readpage,
.readpages = ocfs2_readpages,
.readahead = ocfs2_readahead,
.writepage = ocfs2_writepage,
.write_begin = ocfs2_write_begin,
.write_end = ocfs2_write_end,

1
fs/ocfs2/dlm/dlmmaster.c
View File

@ -2760,6 +2760,7 @@ leave:
* Returns: 1 if dlm->spinlock was dropped/retaken, 0 if never dropped
*/
int dlm_empty_lockres(struct dlm_ctxt *dlm, struct dlm_lock_resource *res)
__must_hold(&dlm->spinlock)
{
int ret;
int lock_dropped = 0;

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