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;
        if (pool->curr_nr < pool->min_nr) {
                spin_lock_irqsave(&pool->lock, flags);
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