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| author | Nick Piggin <nickpiggin@yahoo.com.au> | 2005-05-05 19:15:45 -0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-05-05 19:36:40 -0400 |
| commit | f3ddbdc6267c32223035ea9bb8456a2d86f65ba1 (patch) | |
| tree | bc11ca9a8bc1f1ebdc70e59bb28e8e328346f7bb /fs/namespace.c | |
| parent | 3c8fad1829cc33e903500b41d989fa50ab196378 (diff) | |
[PATCH] fix race in __block_prepare_write
Fix a race where __block_prepare_write can leak out an in-flight read
against a bh if get_block returns an error. This can lead to the page
becoming unlocked while the buffer is locked and the read still in flight.
__mpage_writepage BUGs on this condition.
BUG sighted on a 2-way Itanium2 system with 16K PAGE_SIZE running
fsstress -v -d $DIR/tmp -n 1000 -p 1000 -l 2
where $DIR is a new ext2 filesystem with 4K blocks that is quite
small (causing get_block to fail often with -ENOSPC).
Signed-off-by: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/namespace.c')
0 files changed, 0 insertions, 0 deletions