revert "Revert "mm: remove __GFP_NO_KSWAPD""

It apepars that this patch was innocent, and we hope that "mm: avoid
waking kswapd for THP allocations when compaction is deferred or
contended" will fix the final kswapd-spinning cause.

Cc: Zdenek Kabelac <zkabelac@redhat.com>
Cc: Seth Jennings <sjenning@linux.vnet.ibm.com>
Cc: Valdis Kletnieks <Valdis.Kletnieks@vt.edu>
Cc: Jiri Slaby <jirislaby@gmail.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Robert Jennings <rcj@linux.vnet.ibm.com>
Cc: Mel Gorman <mgorman@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 3 insertions, 4 deletions

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 7e208f0ad68c..8193809f3de0 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -2416,9 +2416,8 @@ __alloc_pages_slowpath(gfp_t gfp_mask, unsigned int order,
                 goto nopage;
 
 restart:
-        if (!(gfp_mask & __GFP_NO_KSWAPD))
-                wake_all_kswapd(order, zonelist, high_zoneidx,
-                                                zone_idx(preferred_zone));
+        wake_all_kswapd(order, zonelist, high_zoneidx,
+                                        zone_idx(preferred_zone));
 
         /*
          * OK, we're below the kswapd watermark and have kicked background
@@ -2495,7 +2494,7 @@ rebalance:
          * system then fail the allocation instead of entering direct reclaim.
          */
         if ((deferred_compaction || contended_compaction) &&
-                                                (gfp_mask & __GFP_NO_KSWAPD))
+            (gfp_mask & (__GFP_MOVABLE|__GFP_REPEAT)) == __GFP_MOVABLE)
                 goto nopage;
 
         /* Try direct reclaim and then allocating */