diff options
| author | Vinayak Menon <vinmenon@codeaurora.org> | 2017-05-26 16:29:55 +0530 |
|---|---|---|
| committer | Gerrit - the friendly Code Review server <code-review@localhost> | 2017-05-31 23:37:47 -0700 |
| commit | 7cf864f5515b15e7aba6b48d3799949fb62065eb (patch) | |
| tree | fbfb0358632eda2fa0c6400b1a92ba0e773d3598 /fs/proc/task_mmu.c | |
| parent | a5706c4fdac1a427fac7b30a49912a1d9d148cb9 (diff) | |
mm: process reclaim: skip locked vmas
Skip VMA_LOCKED vmas from being reclaimed. Not doing so results
in pages in unevictable lrus to be passed for reclaim which can
cause issues. In one such reported problem, the trylock_page in
shrink_page_list fails and reclaim path decides to keep the page
and hits VM_BUG_ON_PAGE since PageUnevictable is set.
Change-Id: I58947faeb5226cf8578541d7fdcd474a24f8c40f
Signed-off-by: Vinayak Menon <vinmenon@codeaurora.org>
Diffstat (limited to 'fs/proc/task_mmu.c')
| -rw-r--r-- | fs/proc/task_mmu.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index fc5243c331c4..420f623e3441 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -1518,6 +1518,9 @@ struct reclaim_param reclaim_task_anon(struct task_struct *task, if (vma->vm_file) continue; + if (vma->vm_flags & VM_LOCKED) + continue; + if (!rp.nr_to_reclaim) break; |