From 8e8a2dea0ca91fe2cb7de7ea212124cfe8c82c35 Mon Sep 17 00:00:00 2001
From: Zygo Blaxell <zygo.blaxell@xandros.com>
Date: Tue, 16 Jun 2009 15:33:57 -0700
Subject: [PATCH] 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>
---
lib/genalloc.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/lib/genalloc.c b/lib/genalloc.c
index f6d276db2d58f..eed2bdb865e76 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);
--
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