https://github.com/torvalds/linux
Revision b9b4bb26af017dbe930cd4df7f9b2fc3a0497bfe authored by Anthony Romano on 24 June 2016, 21:48:43 UTC, committed by Linus Torvalds on 25 June 2016, 00:23:52 UTC
When fallocate is interrupted it will undo a range that extends one byte
past its range of allocated pages.  This can corrupt an in-use page by
zeroing out its first byte.  Instead, undo using the inclusive byte
range.

Fixes: 1635f6a74152f1d ("tmpfs: undo fallocation on failure")
Link: http://lkml.kernel.org/r/1462713387-16724-1-git-send-email-anthony.romano@coreos.com
Signed-off-by: Anthony Romano <anthony.romano@coreos.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Hugh Dickins <hughd@google.com>
Cc: Brandon Philips <brandon@ifup.co>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent a7b50ab
History
Tip revision: b9b4bb26af017dbe930cd4df7f9b2fc3a0497bfe authored by Anthony Romano on 24 June 2016, 21:48:43 UTC
tmpfs: don't undo fallocate past its last page
Tip revision: b9b4bb2
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