| commit | dc8a0843a435b2c0891e7eaea64faaf1ebec9b11 | |
| author | Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> | |
| Wed, 5 Nov 2008 22:21:16 +0000 (5 23:21 +0100) | ||
| committer | David Woodhouse <David.Woodhouse@intel.com> | |
| Wed, 5 Nov 2008 22:22:02 +0000 (5 23:22 +0100) | ||
| tree | 2646065fd3b332e51af6d2c141833e6a00a7441b | treesnapshot (tar.gz zip) |
| parent | 467622ef2acb01986eab37ef96c3632b3ea35999 | commitdiff |
[JFFS2] fix race condition in jffs2_lzo_compress()
deflate_mutex protects the globals lzo_mem and lzo_compress_buf. However,
jffs2_lzo_compress() unlocks deflate_mutex _before_ it has copied out the
compressed data from lzo_compress_buf. Correct this by moving the mutex
unlock after the copy.
In addition, document what deflate_mutex actually protects.
Cc: stable@kernel.org
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Acked-by: Richard Purdie <rpurdie@openedhand.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
deflate_mutex protects the globals lzo_mem and lzo_compress_buf. However,
jffs2_lzo_compress() unlocks deflate_mutex _before_ it has copied out the
compressed data from lzo_compress_buf. Correct this by moving the mutex
unlock after the copy.
In addition, document what deflate_mutex actually protects.
Cc: stable@kernel.org
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Acked-by: Richard Purdie <rpurdie@openedhand.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| fs/jffs2/compr_lzo.c | diffblobblamehistory |