| From | Andrea Arcangeli <> | Subject | [PATCH 19/39] mm: add unlikely to the mm allocation failure check | Date | Mon, 26 Mar 2012 19:46:06 +0200 |
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Very minor optimization to hint gcc.
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> --- kernel/fork.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/kernel/fork.c b/kernel/fork.c index aefe24f..31b2f35 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -547,7 +547,7 @@ struct mm_struct *mm_alloc(void) struct mm_struct *mm; mm = allocate_mm(); - if (!mm) + if (unlikely(!mm)) return NULL; memset(mm, 0, sizeof(*mm));
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