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Commit 9e4be470 authored by Jerome Marchand's avatar Jerome Marchand Committed by Linus Torvalds
Browse files

mm/compaction.c: update comment about zone lock in isolate_freepages_block 



Since commit f40d1e42 ("mm: compaction: acquire the zone->lock as
late as possible"), isolate_freepages_block() takes the zone->lock
itself.  The function description however still states that the
zone->lock must be held.

This patch removes this outdated statement.

Signed-off-by: default avatarJerome Marchand <jmarchan@redhat.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 4b90951c

mm/compaction.c

+3 −4
Original line number Diff line number Diff line
@@ -235,10 +235,9 @@ static bool suitable_migration_target(struct page *page) 
}



/*

 * Isolate free pages onto a private freelist. Caller must hold zone->lock.

 * If @strict is true, will abort returning 0 on any invalid PFNs or non-free

 * pages inside of the pageblock (even though it may still end up isolating

 * some pages).

 * Isolate free pages onto a private freelist. If @strict is true, will abort

 * returning 0 on any invalid PFNs or non-free pages inside of the pageblock

 * (even though it may still end up isolating some pages).

 */

static unsigned long isolate_freepages_block(struct compact_control *cc,

				unsigned long blockpfn,