leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

mm/memory.c: update comment in unmap_single_vma()

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

Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Davidlohr Bueso 2014-04-07 15:37:01 -07:00 committed by Linus Torvalds
parent 9bbc04eeb0
commit 7aa6b4ad5a
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
mm/memory.c
View File

@ -1320,9 +1320,9 @@ static void unmap_single_vma(struct mmu_gather *tlb,
* It is undesirable to test vma->vm_file as it * It is undesirable to test vma->vm_file as it
* should be non-null for valid hugetlb area. * should be non-null for valid hugetlb area.
* However, vm_file will be NULL in the error * 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, * hugetlbfs ->mmap method fails,
* do_mmap_pgoff() nullifies vma->vm_file * mmap_region() nullifies vma->vm_file
* before calling this function to clean up. * before calling this function to clean up.
* Since no pte has actually been setup, it is * Since no pte has actually been setup, it is
* safe to do nothing in this case. * safe to do nothing in this case.