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| author | Anthony Romano <anthony.romano@coreos.com> | 2016-06-24 14:48:43 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-07-27 09:47:40 -0700 |
| commit | 1d3255b4d9f8c592df8e0cfac8078e5148510887 (patch) | |
| tree | 21cd2eaddeccc13c33ed14c4598fc16666f1a8fa /block/bounce.c | |
| parent | d6317d765f3a2a8edbf5e047648e87160aff02c4 (diff) | |
tmpfs: don't undo fallocate past its last page
commit b9b4bb26af017dbe930cd4df7f9b2fc3a0497bfe upstream.
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>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'block/bounce.c')
0 files changed, 0 insertions, 0 deletions