diff options
| author | Andrey Ryabinin <aryabinin@virtuozzo.com> | 2019-03-05 15:49:39 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-03-05 21:07:21 -0800 |
| commit | f4b7e272b5c0425915e2115068e0a5a20a3a628e (patch) | |
| tree | 7b5894a4cc657a7606aa183187392b7eae7e22bc /mm/swap.c | |
| parent | a7ca12f9d905e7437dd3beb9cbb8e85bc2b991f4 (diff) | |
| download | linux-stable-f4b7e272b5c0425915e2115068e0a5a20a3a628e.tar.gz linux-stable-f4b7e272b5c0425915e2115068e0a5a20a3a628e.tar.bz2 linux-stable-f4b7e272b5c0425915e2115068e0a5a20a3a628e.zip | |
mm: remove zone_lru_lock() function, access ->lru_lock directly
We have common pattern to access lru_lock from a page pointer:
zone_lru_lock(page_zone(page))
Which is silly, because it unfolds to this:
&NODE_DATA(page_to_nid(page))->node_zones[page_zonenum(page)]->zone_pgdat->lru_lock
while we can simply do
&NODE_DATA(page_to_nid(page))->lru_lock
Remove zone_lru_lock() function, since it's only complicate things. Use
'page_pgdat(page)->lru_lock' pattern instead.
[aryabinin@virtuozzo.com: a slightly better version of __split_huge_page()]
Link: http://lkml.kernel.org/r/20190301121651.7741-1-aryabinin@virtuozzo.com
Link: http://lkml.kernel.org/r/20190228083329.31892-2-aryabinin@virtuozzo.com
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Rik van Riel <riel@surriel.com>
Cc: William Kucharski <william.kucharski@oracle.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/swap.c')
| -rw-r--r-- | mm/swap.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/mm/swap.c b/mm/swap.c index 4d7d37eb3c40..301ed4e04320 100644 --- a/mm/swap.c +++ b/mm/swap.c @@ -58,16 +58,16 @@ static DEFINE_PER_CPU(struct pagevec, activate_page_pvecs); static void __page_cache_release(struct page *page) { if (PageLRU(page)) { - struct zone *zone = page_zone(page); + pg_data_t *pgdat = page_pgdat(page); struct lruvec *lruvec; unsigned long flags; - spin_lock_irqsave(zone_lru_lock(zone), flags); - lruvec = mem_cgroup_page_lruvec(page, zone->zone_pgdat); + spin_lock_irqsave(&pgdat->lru_lock, flags); + lruvec = mem_cgroup_page_lruvec(page, pgdat); VM_BUG_ON_PAGE(!PageLRU(page), page); __ClearPageLRU(page); del_page_from_lru_list(page, lruvec, page_off_lru(page)); - spin_unlock_irqrestore(zone_lru_lock(zone), flags); + spin_unlock_irqrestore(&pgdat->lru_lock, flags); } __ClearPageWaiters(page); mem_cgroup_uncharge(page); @@ -322,12 +322,12 @@ static inline void activate_page_drain(int cpu) void activate_page(struct page *page) { - struct zone *zone = page_zone(page); + pg_data_t *pgdat = page_pgdat(page); page = compound_head(page); - spin_lock_irq(zone_lru_lock(zone)); - __activate_page(page, mem_cgroup_page_lruvec(page, zone->zone_pgdat), NULL); - spin_unlock_irq(zone_lru_lock(zone)); + spin_lock_irq(&pgdat->lru_lock); + __activate_page(page, mem_cgroup_page_lruvec(page, pgdat), NULL); + spin_unlock_irq(&pgdat->lru_lock); } #endif |