mm/compaction.c: clean code by removing unnecessary assignment

Previously 0 was assigned to variable 'last_migrated_pfn'.  But the
variable is not read after that, so the assignment can be removed.

Signed-off-by: Mateusz Nosek <mateusznosek0@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Mel Gorman <mgorman@techsingularity.net>
Link: http://lkml.kernel.org/r/20200318174509.15021-1-mateusznosek0@gmail.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/compaction.c b/mm/compaction.c
index c589ead..df3da2f 100644 (file)
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -2182,7 +2182,6 @@ compact_zone(struct compact_control *cc, struct capture_control *capc)
                        ret = COMPACT_CONTENDED;
                        putback_movable_pages(&cc->migratepages);
                        cc->nr_migratepages = 0;
-                       last_migrated_pfn = 0;
                        goto out;
                case ISOLATE_NONE:
                        if (update_cached) {