Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=c80e7a826c10cf5bce8487fbaede48bd0bd48d08
Commit: c80e7a826c10cf5bce8487fbaede48bd0bd48d08
Parent: 5e70030d4cf91613530a23b40ad9919bb9ee114f
Author: Rusty Russell <[EMAIL PROTECTED]>
AuthorDate: Sun Jul 15 23:42:00 2007 -0700
Committer: Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Mon Jul 16 09:05:52 2007 -0700
permit mempool_free(NULL)
Christian Borntraeger points out that mempool_free() doesn't noop when
handed NULL. This is inconsistent with the other free-like functions
in the kernel.
Signed-off-by: Rusty Russell <[EMAIL PROTECTED]>
Cc: Christian Borntraeger <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
mm/mempool.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/mm/mempool.c b/mm/mempool.c
index cc1ca86..3e8f1fe 100644
--- a/mm/mempool.c
+++ b/mm/mempool.c
@@ -263,6 +263,9 @@ void mempool_free(void *element, mempool_t *pool)
{
unsigned long flags;
+ if (unlikely(element == NULL))
+ return;
+
smp_mb();
if (pool->curr_nr < pool->min_nr) {
spin_lock_irqsave(&pool->lock, flags);
-
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