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-rw-r--r--mm/vmscan.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 99b3ac7771ad..2385663ae5e5 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -2361,8 +2361,10 @@ static unsigned long do_try_to_free_pages(struct zonelist *zonelist,
aborted_reclaim = shrink_zones(zonelist, sc);
/*
- * Don't shrink slabs when reclaiming memory from
- * over limit cgroups
+ * Don't shrink slabs when reclaiming memory from over limit
+ * cgroups but do shrink slab at least once when aborting
+ * reclaim for compaction to avoid unevenly scanning file/anon
+ * LRU pages over slab pages.
*/
if (global_reclaim(sc)) {
unsigned long lru_pages = 0;
@@ -2404,7 +2406,7 @@ static unsigned long do_try_to_free_pages(struct zonelist *zonelist,
WB_REASON_TRY_TO_FREE_PAGES);
sc->may_writepage = 1;
}
- } while (--sc->priority >= 0);
+ } while (--sc->priority >= 0 && !aborted_reclaim);
out:
delayacct_freepages_end();