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mm, compaction: check if a page has been captured before draining PCP pages

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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@techsingularity.net
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Cc: Chuyi Zhou <zhouchuyi@bytedance.com>
Cc: Jiri Slaby <jirislaby@kernel.org>
Cc: Maxim Levitsky <mlevitsk@redhat.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Pedro Falcato <pedro.falcato@gmail.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Mel Gorman 2023-01-25 13:44:32 +00:00 committed by Andrew Morton
parent 48731c8436
commit 16b3be4034
1 changed files with 6 additions and 6 deletions
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12
mm/compaction.c
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@ -2439,6 +2439,12 @@ compact_zone(struct compact_control *cc, struct capture_control *capc)
}
}
/* 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
@ -2457,12 +2463,6 @@ check_drain:
last_migrated_pfn = 0;
}
}
/* Stop if a page has been captured */
if (capc && capc->page) {
ret = COMPACT_SUCCESS;
break;
}
}
out: