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: NZhang Yanfei <zhangyanfei@cn.fujitsu.com> Cc: k80c <k80ck80c@gmail.com> Cc: Michel Lespinasse <walken@google.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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