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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2006-09-25 23:31:26 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-09-26 08:48:48 -0700
commit6ddab3b9ebebc88bfdd8107c64f12d7e4480c559 (patch)
tree192edd3a85d3665bb7e44c429609a7357ba12bac /mm/vmscan.c
parentca5f9703dffa012cc46166e6206c5a992910e041 (diff)
[PATCH] mm: swap write failure fixup
Currently we can silently drop data if the write to swap failed. It usually doesn't result in data-corruption because on page-in the process will receive SIGBUS (assuming write-failure implies read-failure). This assumption might or might not be valid. This patch will avoid the page being discarded after a failed write. But will print a warning the sysadmin _should_ take to heart, if a lot of swap space becomes un-writeable, OOM is not far off. Tested by making the write fail 'randomly' once every 50 writes or so. [akpm@osdl.org: printk warning fix] Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm/vmscan.c')
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