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Commit 7aa6b4ad authored by Davidlohr Bueso's avatar Davidlohr Bueso Committed by Linus Torvalds
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mm/memory.c: update comment in unmap_single_vma() 



The described issue now occurs inside mmap_region().  And unfortunately
is still valid.

Signed-off-by: default avatarDavidlohr Bueso <davidlohr@hp.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 9bbc04ee

mm/memory.c

+2 −2
Original line number Diff line number Diff line
@@ -1320,9 +1320,9 @@ static void unmap_single_vma(struct mmu_gather *tlb, 
			 * It is undesirable to test vma->vm_file as it

			 * should be non-null for valid hugetlb area.

			 * However, vm_file will be NULL in the error

			 * cleanup path of do_mmap_pgoff. When

			 * cleanup path of mmap_region. When

			 * hugetlbfs ->mmap method fails,

			 * do_mmap_pgoff() nullifies vma->vm_file

			 * mmap_region() nullifies vma->vm_file

			 * before calling this function to clean up.

			 * Since no pte has actually been setup, it is

			 * safe to do nothing in this case.