diff options
| author | swkhack <swkhack@gmail.com> | 2019-06-13 15:56:08 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-07-10 09:54:36 +0200 |
| commit | f847361edd2a25a2cf2ac494909ad78fba165cd4 (patch) | |
| tree | 56b46943cd2b9d7b97c37b9410d466237df3ee18 /kernel | |
| parent | 793ff5efee9ff49fa633cfb1fdf58e7370af160c (diff) | |
mm/mlock.c: change count_mm_mlocked_page_nr return type
[ Upstream commit 0874bb49bb21bf24deda853e8bf61b8325e24bcb ]
On a 64-bit machine the value of "vma->vm_end - vma->vm_start" may be
negative when using 32 bit ints and the "count >> PAGE_SHIFT"'s result
will be wrong. So change the local variable and return value to
unsigned long to fix the problem.
Link: http://lkml.kernel.org/r/20190513023701.83056-1-swkhack@gmail.com
Fixes: 0cf2f6f6dc60 ("mm: mlock: check against vma for actual mlock() size")
Signed-off-by: swkhack <swkhack@gmail.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'kernel')
0 files changed, 0 insertions, 0 deletions