Rik van Riel 212260aa07 mm: clear PageError bit in msync & fsync ... Temporary IO failures, eg. due to loss of both multipath paths, can permanently leave the PageError bit set on a page, resulting in msync or fsync returning -EIO over and over again, even if IO is now getting to the disk correctly. We already clear the AS_ENOSPC and AS_IO bits in mapping->flags in the filemap_fdatawait_range function. Also clearing the PageError bit on the page allows subsequent msync or fsync calls on this file to return without an error, if the subsequent IO succeeds. Unfortunately data written out in the msync or fsync call that returned -EIO can still get lost, because the page dirty bit appears to not get restored on IO error. However, the alternative could be potentially all of memory filling up with uncleanable dirty pages, hanging the system, so there is no nice choice here... Signed-off-by: Rik van Riel <riel@redhat.com> Acked-by: Valerie Aurora <vaurora@redhat.com> Acked-by: Jeff Layton <jlayton@redhat.com> Cc: Theodore Ts'o <tytso@mit.edu> Acked-by: Jan Kara <jack@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2011-01-13 17:32:35 -08:00
..
backing-dev.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6	2010-10-26 17:58:44 -07:00
bootmem.c	x86, memblock: Replace e820_/_early string with memblock_	2010-08-27 11:13:47 -07:00
bounce.c	bounce: call flush_dcache_page() after bounce_copy_vec()	2010-09-09 18:57:25 -07:00
compaction.c	mm: compaction: perform a faster migration scan when migrating asynchronously	2011-01-13 17:32:34 -08:00
debug-pagealloc.c
dmapool.c	mm: add a might_sleep_if() to dma_pool_alloc()	2010-10-26 16:52:08 -07:00
fadvise.c
failslab.c
filemap_xip.c
filemap.c	mm: clear PageError bit in msync & fsync	2011-01-13 17:32:35 -08:00
fremap.c	Avoid pgoff overflow in remap_file_pages	2010-09-25 09:34:58 -07:00
highmem.c	mm,x86: fix kmap_atomic_push vs ioremap_32.c	2010-10-27 18:03:05 -07:00
hugetlb.c	mm/hugetlb.c: avoid double unlock_page() in hugetlb_fault()	2010-12-02 14:51:14 -08:00
hwpoison-inject.c	HWPOISON, hugetlb: support hwpoison injection for hugepage	2010-08-11 09:23:11 +02:00
init-mm.c	mm: provide init_mm mm_context initializer	2010-08-09 20:44:54 -07:00
internal.h	mm: fix is_mem_section_removable() page_order BUG_ON check	2010-10-26 16:52:11 -07:00
Kconfig	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu	2010-10-22 17:31:36 -07:00
Kconfig.debug
kmemcheck.c
kmemleak-test.c
kmemleak.c	kmemleak: Fix typo in the comment	2010-08-08 21:57:23 +01:00
ksm.c	ksm: annotate ksm_thread_mutex is no deadlock source	2010-12-02 14:51:15 -08:00
maccess.c	MN10300: Save frame pointer in thread_info struct rather than global var	2010-10-27 17:29:01 +01:00
madvise.c
Makefile	percpu: use percpu allocator on UP too	2010-10-02 10:26:05 +03:00
memblock.c	memblock: Annotate memblock functions with __init_memblock	2010-10-11 16:00:52 -07:00
memcontrol.c	memcg: fix wrong VM_BUG_ON() in try_charge()'s mm->owner check	2010-12-30 10:07:06 -08:00
memory_hotplug.c	mm: migration: cleanup migrate_pages API by matching types for offlining and sync	2011-01-13 17:32:34 -08:00
memory-failure.c	mm: migration: allow migration to operate asynchronously and avoid synchronous compaction in the faster path	2011-01-13 17:32:34 -08:00
memory.c	use clear_page()/copy_page() in favor of memset()/memcpy() on whole pages	2010-10-26 16:52:13 -07:00
mempolicy.c	mm: migration: cleanup migrate_pages API by matching types for offlining and sync	2011-01-13 17:32:34 -08:00
mempool.c
migrate.c	mm: migration: cleanup migrate_pages API by matching types for offlining and sync	2011-01-13 17:32:34 -08:00
mincore.c
mlock.c	mm: Move vma_stack_continue into mm.h	2010-09-09 09:05:06 -07:00
mm_init.c
mmap.c	install_special_mapping skips security_file_mmap check.	2010-12-15 12:30:36 -08:00
mmu_context.c
mmu_notifier.c
mmzone.c	mm: page allocator: adjust the per-cpu counter threshold when memory is low	2011-01-13 17:32:31 -08:00
mprotect.c	perf_events: Fix perf_counter_mmap() hook in mprotect()	2010-11-09 10:19:38 -08:00
mremap.c	mm: remove pte_*map_nested()	2010-10-26 16:52:08 -07:00
msync.c
nommu.c	nommu: Provide stubbed alloc/free_vm_area() implementation.	2010-12-24 12:08:30 +09:00
oom_kill.c	oom: kill all threads sharing oom killed task's mm	2010-10-26 16:52:05 -07:00
page_alloc.c	mm: migration: allow migration to operate asynchronously and avoid synchronous compaction in the faster path	2011-01-13 17:32:34 -08:00
page_cgroup.c
page_io.c	block: unify flags for struct bio and struct request	2010-08-07 18:20:39 +02:00
page_isolation.c	mm: page_isolation: codeclean fix comment and rm unneeded val init	2010-10-26 16:52:11 -07:00
page-writeback.c	mm/page-writeback.c: fix __set_page_dirty_no_writeback() return value	2011-01-13 17:32:32 -08:00
pagewalk.c	mm: remove call to find_vma in pagewalk for non-hugetlbfs	2010-11-25 06:50:46 +09:00
percpu-km.c	percpu: clear memory allocated with the km allocator	2010-10-02 10:28:42 +03:00
percpu-vm.c	mm: remove gfp mask from pcpu_get_vm_areas	2011-01-13 17:32:34 -08:00
percpu.c	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2011-01-13 10:05:56 -08:00
prio_tree.c
quicklist.c
readahead.c
rmap.c	mm/rmap.c: fix comment	2010-12-27 15:14:06 +01:00
shmem.c	fs: icache RCU free inodes	2011-01-07 17:50:26 +11:00
slab.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6	2011-01-10 08:38:01 -08:00
slob.c	kernel: kmem_ptr_validate considered harmful	2011-01-07 17:50:16 +11:00
slub.c	mm: convert sprintf_symbol to %pS	2011-01-13 17:32:33 -08:00
sparse-vmemmap.c	tree-wide: fix comment/printk typos	2010-11-01 15:38:34 -04:00
sparse.c
swap_state.c
swap.c	fuse: use release_pages()	2010-10-27 18:03:17 -07:00
swapfile.c	block: make blkdev_get/put() handle exclusive access	2010-11-13 11:55:17 +01:00
thrash.c
truncate.c	Call the filesystem back whenever a page is removed from the page cache	2010-12-02 09:55:21 -05:00
util.c	kernel: kmem_ptr_validate considered harmful	2011-01-07 17:50:16 +11:00
vmalloc.c	mm: unify module_alloc code for vmalloc	2011-01-13 17:32:34 -08:00
vmscan.c	mm: vmscan: rename lumpy_mode to reclaim_mode	2011-01-13 17:32:34 -08:00
vmstat.c	mm: vmstat: use a single setter function and callback for adjusting percpu thresholds	2011-01-13 17:32:31 -08:00