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authorZhang Yanfei <zhangyanfei@cn.fujitsu.com>2013-02-22 16:35:46 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2013-02-23 17:50:22 -0800
commit43be594a6b0ce34ab5fa3b13e08727a99fb95b91 (patch)
treebd76623b74473a04d4ebb4e044ac2382bfb43a54
parent6434b94a16b09ac84a6411adb2bc0b645245d007 (diff)
fs/buffer.c: change type of max_buffer_heads to unsigned long
max_buffer_heads is calculated from nr_free_buffer_pages(), so change its type to unsigned long in case of overflow. Signed-off-by: Zhang Yanfei <zhangyanfei@cn.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--fs/buffer.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/buffer.c b/fs/buffer.c
index 2ea9cd44aeae..62169c192c21 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -3227,7 +3227,7 @@ static struct kmem_cache *bh_cachep __read_mostly;
* Once the number of bh's in the machine exceeds this level, we start
* stripping them in writeback.
*/
-static int max_buffer_heads;
+static unsigned long max_buffer_heads;
int buffer_heads_over_limit;
@@ -3343,7 +3343,7 @@ EXPORT_SYMBOL(bh_submit_read);
void __init buffer_init(void)
{
- int nrpages;
+ unsigned long nrpages;
bh_cachep = kmem_cache_create("buffer_head",
sizeof(struct buffer_head), 0,