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| author | Sougata Santra <sougata@tuxera.com> | 2014-04-03 14:50:34 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-04-03 16:21:26 -0700 |
| commit | d7bdb996aef67ea24c62707ca4e29b07025e9683 (patch) | |
| tree | 619189c603f5ff8dca0f83880bc38382da61039d /fs/hfsplus/hfsplus_fs.h | |
| parent | abfeb724b43f371ea70ec2c1290ed33e6f65db60 (diff) | |
| download | blackbird-op-linux-d7bdb996aef67ea24c62707ca4e29b07025e9683.tar.gz blackbird-op-linux-d7bdb996aef67ea24c62707ca4e29b07025e9683.zip | |
fs/hfsplus/extents.c: fix concurrent acess of alloc_blocks
Concurrent access to alloc_blocks in hfsplus_inode_info() is protected
by extents_lock mutex. This patch fixes two instances where
alloc_blocks modification was not protected with this lock.
This fixes possible allocation bitmap corruption in race conditions
while extending and truncating files.
[akpm@linux-foundation.org: take extents_lock before taking a copy of ->alloc_blocks]
[akpm@linux-foundation.org: remove now-unused label `out']
Signed-off-by: Sougata Santra <sougata@tuxera.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Vyacheslav Dubeyko <slava@dubeyko.com>
Cc: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/hfsplus/hfsplus_fs.h')
0 files changed, 0 insertions, 0 deletions
