kernel-hacking-2024-linux-s.../fs/ufs
Fabian Frederick ed3ad79f87 fs/ufs/super.c: fix potential race condition
Let locking subsystem decide on mutex management.  As reported by Andrew
Morton this patch fixes a bug:

: lock_ufs() is assuming that on non-preempt uniprocessor, the calling
: code will run atomically up to the matching unlock_ufs().
:
: But that isn't true. The very first site I looked at (ufs_frag_map)
: does sb_bread() under lock_ufs().  And sb_bread() will call schedule(),
: very commonly.
:
: The ->mutex_owner stuff is a bit hacky but should work OK.

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Cc: Evgeniy Dushistov <dushistov@mail.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-02-17 14:34:51 -08:00
..
balloc.c fs/ufs/balloc.c: remove unused variable 2014-10-14 02:18:20 +02:00
cylinder.c
dir.c
file.c
ialloc.c
inode.c
Kconfig
Makefile
namei.c
super.c fs/ufs/super.c: fix potential race condition 2015-02-17 14:34:51 -08:00
swab.h
symlink.c
truncate.c
ufs.h
ufs_fs.h
util.c
util.h