From 8b10de2ef8c89a4f24e3b16e7e96c8858271b977 Mon Sep 17 00:00:00 2001 From: Zhang Yanfei Date: Wed, 20 Mar 2013 15:07:27 +1100 Subject: [PATCH] mmap: find_vma: remove the WARN_ON_ONCE(!mm) check Remove the WARN_ON_ONCE(!mm) check as the comment suggested. Kernel code calls find_vma only when it is absolutely sure that the mm_struct arg to it is non-NULL. Signed-off-by: Zhang Yanfei Signed-off-by: Andrew Morton --- mm/mmap.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/mm/mmap.c b/mm/mmap.c index 2664a47cec93..9da664e29370 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -1933,9 +1933,6 @@ struct vm_area_struct *find_vma(struct mm_struct *mm, unsigned long addr) { struct vm_area_struct *vma = NULL; - if (WARN_ON_ONCE(!mm)) /* Remove this in linux-3.6 */ - return NULL; - /* Check the cache first. */ /* (Cache hit rate is typically around 35%.) */ vma = mm->mmap_cache; -- 2.39.5