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authorMinchan Kim <minchan@kernel.org>2017-05-04 00:54:20 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2017-05-04 01:52:10 +0300
commit666e5a406c3ed562e7b3ceff8b631b6067bdaead (patch)
tree7c92e65829e730413ae3e8afece9269004d5324f /mm/vmscan.c
parent33fc80e2574737e6e21eecc4c1d7942370a2c752 (diff)
downloadlinux-666e5a406c3ed562e7b3ceff8b631b6067bdaead.tar.xz
mm: make ttu's return boolean
try_to_unmap() returns SWAP_SUCCESS or SWAP_FAIL so it's suitable for boolean return. This patch changes it. Link: http://lkml.kernel.org/r/1489555493-14659-8-git-send-email-minchan@kernel.org Signed-off-by: Minchan Kim <minchan@kernel.org> Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> 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: 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/vmscan.c')
-rw-r--r--mm/vmscan.c7
1 files changed, 1 insertions, 6 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c
index f80a54da5f7f..7a30150b4dee 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -972,7 +972,6 @@ static unsigned long shrink_page_list(struct list_head *page_list,
int may_enter_fs;
enum page_references references = PAGEREF_RECLAIM_CLEAN;
bool dirty, writeback;
- int ret = SWAP_SUCCESS;
cond_resched();
@@ -1145,13 +1144,9 @@ static unsigned long shrink_page_list(struct list_head *page_list,
* processes. Try to unmap it here.
*/
if (page_mapped(page)) {
- switch (ret = try_to_unmap(page,
- ttu_flags | TTU_BATCH_FLUSH)) {
- case SWAP_FAIL:
+ if (!try_to_unmap(page, ttu_flags | TTU_BATCH_FLUSH)) {
nr_unmap_fail++;
goto activate_locked;
- case SWAP_SUCCESS:
- ; /* try to free the page below */
}
}