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aaa4059bc2
kernel-ark/mm
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Jan Kara aaa4059bc2 [PATCH] ext3: Fix unmapped buffers in transaction's lists 
Fix the problem (BUG 4964) with unmapped buffers in transaction's
t_sync_data list.  The problem is we need to call filesystem's own
invalidatepage() from block_write_full_page().

block_write_full_page() must call filesystem's invalidatepage().  Otherwise
following nasty race can happen:

   proc 1                                        proc 2
   ------                                        ------
- write some new data to 'offset'
  => bh gets to the transactions data list
                                              - starts truncate
                                                => i_size set to new size
- mpage_writepages()
  - ext3_ordered_writepage() to 'offset'
    - block_write_full_page()
      - page->index > end_index+1
        - block_invalidatepage()
          - discard_buffer()
            - clear_buffer_mapped()

- commit triggers and finds unmapped buffer - BOOM!

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:17 -08:00
..
bootmem.c [PATCH] core remove PageReserved 2005-10-29 21:40:39 -07:00
fadvise.c
filemap_xip.c [PATCH] mm: rmap with inner ptlock 2005-10-29 21:40:41 -07:00
filemap.c [PATCH] mm/filemap.c:filemap_populate(): move export. 2005-10-29 21:40:45 -07:00
filemap.h
fremap.c [PATCH] mm: ptd_alloc take ptlock 2005-10-29 21:40:40 -07:00
highmem.c [PATCH] gfp_t: the rest 2005-10-28 08:16:51 -07:00
hugetlb.c [PATCH] hugetlb: demand fault handler 2005-10-29 21:40:43 -07:00
internal.h
Kconfig [PATCH] memory hotplug: sysfs and add/remove functions 2005-10-29 21:40:44 -07:00
madvise.c [PATCH] core remove PageReserved 2005-10-29 21:40:39 -07:00
Makefile [PATCH] memory hotplug: sysfs and add/remove functions 2005-10-29 21:40:44 -07:00
memory_hotplug.c [PATCH] memory hotplug: call setup_per_zone_pages_min after hotplug 2005-10-29 21:40:44 -07:00
memory.c [PATCH] .text page fault SMP scalability optimization 2005-10-29 21:40:43 -07:00
mempolicy.c [PATCH] Remove policy contextualization from mbind 2005-10-29 21:40:45 -07:00
mempool.c [PATCH] gfp_t: mm/* (easy parts) 2005-10-28 08:16:47 -07:00
mincore.c
mlock.c
mmap.c [PATCH] mm: unmap_vmas with inner ptlock 2005-10-29 21:40:41 -07:00
mprotect.c [PATCH] mm: pte_offset_map_lock loops 2005-10-29 21:40:40 -07:00
mremap.c [PATCH] mm: split page table lock 2005-10-29 21:40:42 -07:00
msync.c [PATCH] mm: pte_offset_map_lock loops 2005-10-29 21:40:40 -07:00
nommu.c [PATCH] mm: follow_page with inner ptlock 2005-10-29 21:40:41 -07:00
oom_kill.c [PATCH] gfp flags annotations - part 1 2005-10-08 15:00:57 -07:00
page_alloc.c [PATCH] mm: wider use of for_each_*cpu() 2005-10-29 21:40:45 -07:00
page_io.c [PATCH] mm: split page table lock 2005-10-29 21:40:42 -07:00
page-writeback.c [PATCH] timer initialization cleanup: DEFINE_TIMER 2005-09-09 14:03:48 -07:00
pdflush.c
prio_tree.c
readahead.c
rmap.c [PATCH] mm: update comments to pte lock 2005-10-29 21:40:42 -07:00
shmem.c [PATCH] mm: split page table lock 2005-10-29 21:40:42 -07:00
slab.c [PATCH] slab: add additional debugging to detect slabs from the wrong node 2005-10-29 21:40:36 -07:00
sparse.c [PATCH] memory hotplug: move section_mem_map alloc to sparse.c 2005-10-29 21:40:44 -07:00
swap_state.c [PATCH] mm: update comments to pte lock 2005-10-29 21:40:42 -07:00
swap.c [PATCH] mm: split page table lock 2005-10-29 21:40:42 -07:00
swapfile.c [PATCH] mm: split page table lock 2005-10-29 21:40:42 -07:00
thrash.c [PATCH] swaptoken tuning 2005-10-29 21:40:35 -07:00
tiny-shmem.c
truncate.c [PATCH] ext3: Fix unmapped buffers in transaction's lists 2005-10-30 17:37:17 -08:00
vmalloc.c [PATCH] mm: init_mm without ptlock 2005-10-29 21:40:40 -07:00
vmscan.c [PATCH] mm: split page table lock 2005-10-29 21:40:42 -07:00