diff options
| author | Jann Horn <jannh@google.com> | 2020-10-16 05:13:00 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-10-16 20:11:22 +0200 |
| commit | 4d45e75a9955ade5c2f49bd96fc4173b2cec9a72 (patch) | |
| tree | 71b16b0e22ee630e2956a3285990fb49df84685e /mm/khugepaged.c | |
| parent | mm/gup: take mmap_lock in get_dump_page() (diff) | |
| download | linux-4d45e75a9955ade5c2f49bd96fc4173b2cec9a72.tar.xz linux-4d45e75a9955ade5c2f49bd96fc4173b2cec9a72.zip | |
mm: remove the now-unnecessary mmget_still_valid() hack
The preceding patches have ensured that core dumping properly takes the
mmap_lock. Thanks to that, we can now remove mmget_still_valid() and all
its users.
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: "Eric W . Biederman" <ebiederm@xmission.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Link: http://lkml.kernel.org/r/20200827114932.3572699-8-jannh@google.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/khugepaged.c')
| -rw-r--r-- | mm/khugepaged.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/khugepaged.c b/mm/khugepaged.c index 58b0d9c502a1..4e3dff13eb70 100644 --- a/mm/khugepaged.c +++ b/mm/khugepaged.c @@ -434,7 +434,7 @@ static void insert_to_mm_slots_hash(struct mm_struct *mm, static inline int khugepaged_test_exit(struct mm_struct *mm) { - return atomic_read(&mm->mm_users) == 0 || !mmget_still_valid(mm); + return atomic_read(&mm->mm_users) == 0; } static bool hugepage_vma_check(struct vm_area_struct *vma, |