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Commit 43be594a authored by Zhang Yanfei's avatar Zhang Yanfei Committed by Linus Torvalds
Browse files

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: default avatarZhang Yanfei <zhangyanfei@cn.fujitsu.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 6434b94a

fs/buffer.c

+2 −2
Original line number Diff line number Diff line
@@ -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,