From: "Ram Gupta" <ram.gupta5@gmail.com>
To: "Andrew Morton" <akpm@osdl.org>
Cc: "linux mailing-list" <linux-kernel@vger.kernel.org>,
torvalds@linux-foundation.org
Subject: [PATCH]fs: Fix to correct the mbcache entries counter
Date: Thu, 25 Oct 2007 10:03:28 -0500 [thread overview]
Message-ID: <728201270710250803p72c656d1nca58ad0bf4f91d41@mail.gmail.com> (raw)
This patch fixes the c_entry_count counter of the mbcache. Currently
it increments the counter first & allocate the cache entry later. In
case of failure to allocate the entry due to insufficient memory this
counter is still left incremented. This patch fixes this anomaly.
Signed-off-by: Ram Gupta <ram.gupta5@gmail.com>
---------------
--- linux-2.6.23.1/fs/mbcache.c.orig 2007-10-25 09:19:28.000000000 -0500
+++ linux-2.6.23.1/fs/mbcache.c 2007-10-25 09:19:59.000000000 -0500
@@ -403,9 +403,9 @@ mb_cache_entry_alloc(struct mb_cache *ca
{
struct mb_cache_entry *ce;
- atomic_inc(&cache->c_entry_count);
ce = kmem_cache_alloc(cache->c_entry_cache, GFP_KERNEL);
if (ce) {
+ atomic_inc(&cache->c_entry_count);
INIT_LIST_HEAD(&ce->e_lru_list);
INIT_LIST_HEAD(&ce->e_block_list);
ce->e_cache = cache;
Thanks
Ram Gupta
reply other threads:[~2007-10-25 15:03 UTC|newest]
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