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authorMinchan Kim <minchan@kernel.org>2017-05-04 00:54:13 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2017-05-04 01:52:10 +0300
commitad6b67041a45497261617d7a28b15159b202cb5a (patch)
treec91413b218dc487e06d42de60c91856e1126b150 /mm/rmap.c
parent192d7232569ab61ded40c8be691b12832bc6bcd1 (diff)
downloadlinux-ad6b67041a45497261617d7a28b15159b202cb5a.tar.xz
mm: remove SWAP_MLOCK in ttu
ttu doesn't need to return SWAP_MLOCK. Instead, just return SWAP_FAIL because it means the page is not-swappable so it should move to another LRU list(active or unevictable). putback friends will move it to right list depending on the page's LRU flag. Link: http://lkml.kernel.org/r/1489555493-14659-6-git-send-email-minchan@kernel.org Signed-off-by: Minchan Kim <minchan@kernel.org> Cc: Anshuman Khandual <khandual@linux.vnet.ibm.com> Cc: Hillf Danton <hillf.zj@alibaba-inc.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/rmap.c')
-rw-r--r--mm/rmap.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/mm/rmap.c b/mm/rmap.c
index 171db511aa8c..45f41d4fa670 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -1329,7 +1329,7 @@ static int try_to_unmap_one(struct page *page, struct vm_area_struct *vma,
*/
mlock_vma_page(page);
}
- ret = SWAP_MLOCK;
+ ret = SWAP_FAIL;
page_vma_mapped_walk_done(&pvmw);
break;
}
@@ -1506,7 +1506,6 @@ static int page_mapcount_is_zero(struct page *page)
* SWAP_SUCCESS - we succeeded in removing all mappings
* SWAP_AGAIN - we missed a mapping, try again later
* SWAP_FAIL - the page is unswappable
- * SWAP_MLOCK - page is mlocked.
*/
int try_to_unmap(struct page *page, enum ttu_flags flags)
{