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| author | Andrey Ryabinin <aryabinin@virtuozzo.com> | 2018-04-10 16:27:51 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-04-11 10:28:29 -0700 |
| commit | 894befec4d70b1c14097e4f009c90114b5a044ba (patch) | |
| tree | 29bb208430285c9308a119e31d232aaa7a899ae3 /mm/vmscan.c | |
| parent | d79f7aa496fc94d763f67b833a1f36f4c171176f (diff) | |
| download | linux-894befec4d70b1c14097e4f009c90114b5a044ba.tar.gz linux-894befec4d70b1c14097e4f009c90114b5a044ba.tar.bz2 linux-894befec4d70b1c14097e4f009c90114b5a044ba.zip | |
mm/vmscan: update stale comments
Update some comments that became stale since transiton from per-zone to
per-node reclaim.
Link: http://lkml.kernel.org/r/20180315164553.17856-2-aryabinin@virtuozzo.com
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Shakeel Butt <shakeelb@google.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Tejun Heo <tj@kernel.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/vmscan.c')
| -rw-r--r-- | mm/vmscan.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c index 4390a8d5be41..6d74b12099bd 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -926,7 +926,7 @@ static unsigned long shrink_page_list(struct list_head *page_list, (PageSwapCache(page) && (sc->gfp_mask & __GFP_IO)); /* - * The number of dirty pages determines if a zone is marked + * The number of dirty pages determines if a node is marked * reclaim_congested which affects wait_iff_congested. kswapd * will stall and start writing pages if the tail of the LRU * is all dirty unqueued pages. @@ -1764,7 +1764,7 @@ shrink_inactive_list(unsigned long nr_to_scan, struct lruvec *lruvec, * as there is no guarantee the dirtying process is throttled in the * same way balance_dirty_pages() manages. * - * Once a zone is flagged ZONE_WRITEBACK, kswapd will count the number + * Once a node is flagged PGDAT_WRITEBACK, kswapd will count the number * of pages under pages flagged for immediate reclaim and stall if any * are encountered in the nr_immediate check below. */ @@ -1791,7 +1791,7 @@ shrink_inactive_list(unsigned long nr_to_scan, struct lruvec *lruvec, */ if (sane_reclaim(sc)) { /* - * Tag a zone as congested if all the dirty pages scanned were + * Tag a node as congested if all the dirty pages scanned were * backed by a congested BDI and wait_iff_congested will stall. */ if (stat.nr_dirty && stat.nr_dirty == stat.nr_congested) @@ -1812,7 +1812,7 @@ shrink_inactive_list(unsigned long nr_to_scan, struct lruvec *lruvec, } /* - * Stall direct reclaim for IO completions if underlying BDIs or zone + * Stall direct reclaim for IO completions if underlying BDIs and node * is congested. Allow kswapd to continue until it starts encountering * unqueued dirty pages or cycling through the LRU too quickly. */ @@ -3808,7 +3808,7 @@ static int __node_reclaim(struct pglist_data *pgdat, gfp_t gfp_mask, unsigned in if (node_pagecache_reclaimable(pgdat) > pgdat->min_unmapped_pages) { /* - * Free memory by calling shrink zone with increasing + * Free memory by calling shrink node with increasing * priorities until we have enough memory freed. */ do { |