The patch titled
Subject: mm/vmscan: update stale comments
has been added to the -mm tree. Its filename is
mm-vmscan-update-stale-comments.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-vmscan-update-stale-comments.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-vmscan-update-stale-comments.patch
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------------------------------------------------------
From: Andrey Ryabinin <aryabinin@xxxxxxxxxxxxx>
Subject: 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@xxxxxxxxxxxxx
Signed-off-by: Andrey Ryabinin <aryabinin@xxxxxxxxxxxxx>
Cc: Shakeel Butt <shakeelb@xxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
diff -puN mm/vmscan.c~mm-vmscan-update-stale-comments mm/vmscan.c
--- a/mm/vmscan.c~mm-vmscan-update-stale-comments
+++ a/mm/vmscan.c
@@ -926,7 +926,7 @@ static unsigned long shrink_page_list(st
(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
* 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
*/
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
}
/*
- * 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_
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 {
_
Patches currently in -mm which might be from aryabinin@xxxxxxxxxxxxx are
mm-vmscan-wake-up-flushers-for-legacy-cgroups-too.patch
mm-vmscan-update-stale-comments.patch
mm-vmscan-replace-mm_vmscan_lru_shrink_inactive-with-shrink_page_list-tracepoint.patch
mm-vmscan-remove-redundant-current_may_throttle-check.patch
mm-vmscan-dont-change-pgdat-state-on-base-of-a-single-lru-list-state.patch
mm-vmscan-dont-mess-with-pgdat-flags-in-memcg-reclaim.patch
mm-kasan-dont-vfree-nonexistent-vm_area.patch
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