The patch titled
Subject: mm, compaction: check if a page has been captured before draining PCP pages
has been added to the -mm mm-unstable branch. Its filename is
mm-compaction-check-if-a-page-has-been-captured-before-draining-pcp-pages.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-compaction-check-if-a-page-has-been-captured-before-draining-pcp-pages.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
Subject: mm, compaction: check if a page has been captured before draining PCP pages
Date: Wed, 25 Jan 2023 13:44:32 +0000
If a page has been captured then draining is unnecssary so check first for
a captured page.
Link: https://lkml.kernel.org/r/20230125134434.18017-3-mgorman@xxxxxxxxxxxxxxxxxxx
Signed-off-by: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
Cc: Chuyi Zhou <zhouchuyi@xxxxxxxxxxxxx>
Cc: Jiri Slaby <jirislaby@xxxxxxxxxx>
Cc: Maxim Levitsky <mlevitsk@xxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Cc: Pedro Falcato <pedro.falcato@xxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
--- a/mm/compaction.c~mm-compaction-check-if-a-page-has-been-captured-before-draining-pcp-pages
+++ a/mm/compaction.c
@@ -2440,6 +2440,12 @@ compact_zone(struct compact_control *cc,
}
}
+ /* Stop if a page has been captured */
+ if (capc && capc->page) {
+ ret = COMPACT_SUCCESS;
+ break;
+ }
+
check_drain:
/*
* Has the migration scanner moved away from the previous
@@ -2458,12 +2464,6 @@ check_drain:
last_migrated_pfn = 0;
}
}
-
- /* Stop if a page has been captured */
- if (capc && capc->page) {
- ret = COMPACT_SUCCESS;
- break;
- }
}
out:
_
Patches currently in -mm which might be from mgorman@xxxxxxxxxxxxxxxxxxx are
mm-page_alloc-rename-alloc_high-to-alloc_min_reserve.patch
mm-page_alloc-treat-rt-tasks-similar-to-__gfp_high.patch
mm-page_alloc-explicitly-record-high-order-atomic-allocations-in-alloc_flags.patch
mm-page_alloc-explicitly-define-what-alloc-flags-deplete-min-reserves.patch
mm-page_alloc-explicitly-define-how-__gfp_high-non-blocking-allocations-accesses-reserves.patch
mm-compaction-rename-compact_control-rescan-to-finish_pageblock.patch
mm-compaction-check-if-a-page-has-been-captured-before-draining-pcp-pages.patch
mm-compaction-finish-scanning-the-current-pageblock-if-requested.patch
mm-compaction-finish-pageblocks-on-complete-migration-failure.patch
