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authorAndrey Ryabinin <aryabinin@virtuozzo.com>2018-04-10 16:27:51 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-04-11 10:28:29 -0700
commit894befec4d70b1c14097e4f009c90114b5a044ba (patch)
tree29bb208430285c9308a119e31d232aaa7a899ae3 /mm
parentd79f7aa496fc94d763f67b833a1f36f4c171176f (diff)
downloadlinux-894befec4d70b1c14097e4f009c90114b5a044ba.tar.bz2
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')
-rw-r--r--mm/vmscan.c10
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 {