[merged] mm-alloc_contig-re-allow-cma-to-compact-fs-pages.patch removed from -mm tree

[merged] mm-alloc_contig-re-allow-cma-to-compact-fs-pages.patch removed from -mm tree

[akpm]

The patch titled
     Subject: mm: alloc_contig: re-allow CMA to compact FS pages
has been removed from the -mm tree.  Its filename was
     mm-alloc_contig-re-allow-cma-to-compact-fs-pages.patch

This patch was dropped because it was merged into mainline or a subsystem tree

------------------------------------------------------
From: Lucas Stach <l.stach@pengutronix.de>
Subject: mm: alloc_contig: re-allow CMA to compact FS pages

Commit 73e64c51afc5 (mm, compaction: allow compaction for GFP_NOFS
requests) changed compation to skip FS pages if not explicitly allowed to
touch them, but missed to update the CMA compact_control.

This leads to a very high isolation failure rate, crippling performance of
CMA even on a lightly loaded system.  Re-allow CMA to compact FS pages by
setting the correct GFP flags, restoring CMA behavior and performance to
the kernel 4.9 level.

Fixes: 73e64c51afc5 (mm, compaction: allow compaction for GFP_NOFS requests)
Link: http://lkml.kernel.org/r/20170113115155.24335-1-l.stach@pengutronix.de
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/page_alloc.c |    1 +
 1 file changed, 1 insertion(+)

diff -puN mm/page_alloc.c~mm-alloc_contig-re-allow-cma-to-compact-fs-pages mm/page_alloc.c
--- a/mm/page_alloc.c~mm-alloc_contig-re-allow-cma-to-compact-fs-pages
+++ a/mm/page_alloc.c
@@ -7248,6 +7248,7 @@ int alloc_contig_range(unsigned long sta
 		.zone = page_zone(pfn_to_page(start)),
 		.mode = MIGRATE_SYNC,
 		.ignore_skip_hint = true,
+		.gfp_mask = GFP_KERNEL,
 	};
 	INIT_LIST_HEAD(&cc.migratepages);
 
_

Patches currently in -mm which might be from l.stach@pengutronix.de are