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| author | Joonsoo Kim <iamjoonsoo.kim@lge.com> | 2016-05-19 17:12:20 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-19 19:12:14 -0700 |
| commit | 09b4ab3c433733127f8644290e94548a4cb8122f (patch) | |
| tree | 0aa31af3626ef6cbd70dbb733aae3c1524c5f279 /mm/page-writeback.c | |
| parent | ba6b0979e346fd91d3b7ef6956d7155877308f0f (diff) | |
| download | linux-stable-09b4ab3c433733127f8644290e94548a4cb8122f.tar.gz linux-stable-09b4ab3c433733127f8644290e94548a4cb8122f.tar.bz2 linux-stable-09b4ab3c433733127f8644290e94548a4cb8122f.zip | |
mm/writeback: correct dirty page calculation for highmem
ZONE_MOVABLE could be treated as highmem so we need to consider it for
accurate calculation of dirty pages. And, in following patches,
ZONE_CMA will be introduced and it can be treated as highmem, too. So,
instead of manually adding stat of ZONE_MOVABLE, looping all zones and
check whether the zone is highmem or not and add stat of the zone which
can be treated as highmem.
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Laura Abbott <lauraa@codeaurora.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Michal Nazarewicz <mina86@mina86.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/page-writeback.c')
| -rw-r--r-- | mm/page-writeback.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/mm/page-writeback.c b/mm/page-writeback.c index bc5149d5ec38..3b88795ab46e 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -296,11 +296,15 @@ static unsigned long highmem_dirtyable_memory(unsigned long total) #ifdef CONFIG_HIGHMEM int node; unsigned long x = 0; + int i; for_each_node_state(node, N_HIGH_MEMORY) { - struct zone *z = &NODE_DATA(node)->node_zones[ZONE_HIGHMEM]; + for (i = 0; i < MAX_NR_ZONES; i++) { + struct zone *z = &NODE_DATA(node)->node_zones[i]; - x += zone_dirtyable_memory(z); + if (is_highmem(z)) + x += zone_dirtyable_memory(z); + } } /* * Unreclaimable memory (kernel memory or anonymous memory |