vmscan: delete dead code

`priority' cannot be negative here.  And the comment is obsolete.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 0 insertions, 10 deletions

diff --git a/mm/vmscan.c b/mm/vmscan.c
index 0c33a0997907..28b0521e4bfd 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1956,16 +1956,6 @@ static unsigned long do_try_to_free_pages(struct zonelist *zonelist,
         }
 
 out:
-        /*
-         * Now that we've scanned all the zones at this priority level, note
-         * that level within the zone so that the next thread which performs
-         * scanning of this zone will immediately start out at this priority
-         * level.  This affects only the decision whether or not to bring
-         * mapped pages onto the inactive list.
-         */
-        if (priority < 0)
-                priority = 0;
-
         delayacct_freepages_end();
         put_mems_allowed();