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| author | Zygo Blaxell <zygo.blaxell@xandros.com> | 2009-06-16 15:33:57 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-16 19:47:53 -0700 |
| commit | 8e8a2dea0ca91fe2cb7de7ea212124cfe8c82c35 (patch) | |
| tree | 96d07171a5c95e87c69fc18d4d0e582f90095d4e | |
| parent | 69050eee8e08a6234f29fe71a56f8c7c7d4d7186 (diff) | |
| download | lwn-8e8a2dea0ca91fe2cb7de7ea212124cfe8c82c35.tar.gz lwn-8e8a2dea0ca91fe2cb7de7ea212124cfe8c82c35.zip | |
lib/genalloc.c: remove unmatched write_lock() in gen_pool_destroy
There is a call to write_lock() in gen_pool_destroy which is not balanced
by any corresponding write_unlock(). This causes problems with preemption
because the preemption-disable counter is incremented in the write_lock()
call, but never decremented by any call to write_unlock(). This bug is
gen_pool_destroy, and one of them is non-x86 arch-specific code.
Signed-off-by: Zygo Blaxell <zygo.blaxell@xandros.com>
Cc: Jiri Kosina <trivial@kernel.org>
Cc: Steve Wise <swise@opengridcomputing.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | lib/genalloc.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/lib/genalloc.c b/lib/genalloc.c index f6d276db2d58..eed2bdb865e7 100644 --- a/lib/genalloc.c +++ b/lib/genalloc.c @@ -85,7 +85,6 @@ void gen_pool_destroy(struct gen_pool *pool) int bit, end_bit; - write_lock(&pool->lock); list_for_each_safe(_chunk, _next_chunk, &pool->chunks) { chunk = list_entry(_chunk, struct gen_pool_chunk, next_chunk); list_del(&chunk->next_chunk); |