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| author | Mel Gorman <mgorman@suse.de> | 2013-12-18 17:08:39 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-12-18 19:04:51 -0800 |
| commit | eb4489f69f224356193364dc2762aa009738ca7f (patch) | |
| tree | 989a782b069c484155770d122026ce2f447e8a2a | |
| parent | c3a489cac38d43ea6dc4ac240473b44b46deecf7 (diff) | |
| download | lwn-eb4489f69f224356193364dc2762aa009738ca7f.tar.gz lwn-eb4489f69f224356193364dc2762aa009738ca7f.zip | |
mm: numa: avoid unnecessary work on the failure path
If a PMD changes during a THP migration then migration aborts but the
failure path is doing more work than is necessary.
Signed-off-by: Mel Gorman <mgorman@suse.de>
Reviewed-by: Rik van Riel <riel@redhat.com>
Cc: Alex Thorlton <athorlton@sgi.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | mm/migrate.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/mm/migrate.c b/mm/migrate.c index be787d506fbb..a987525810ae 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -1780,7 +1780,8 @@ fail_putback: putback_lru_page(page); mod_zone_page_state(page_zone(page), NR_ISOLATED_ANON + page_lru, -HPAGE_PMD_NR); - goto out_fail; + + goto out_unlock; } /* @@ -1854,6 +1855,7 @@ out_dropref: } spin_unlock(ptl); +out_unlock: unlock_page(page); put_page(page); return 0; |