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authorVivek Goyal <vgoyal@redhat.com>2011-05-23 10:02:19 +0200
committerJens Axboe <jaxboe@fusionio.com>2011-05-23 10:02:19 +0200
commit95cf3dd9dbe6883a0328724e2110e3fc6465630b (patch)
tree738ee1f31ee14c9dbfd4336bd8c20ee42d26743d /block
parentcfq-iosched: Make IO merge related stats per cpu (diff)
downloadlinux-95cf3dd9dbe6883a0328724e2110e3fc6465630b.tar.xz
linux-95cf3dd9dbe6883a0328724e2110e3fc6465630b.zip
block: call elv_bio_merged() when merged
Commit 73c101011926 ("block: initial patch for on-stack per-task plugging") removed calls to elv_bio_merged() when @bio merged with @req. Re-add them. This in turn will update merged stats in associated group. That should be safe as long as request has got reference to the blkio_group. Signed-off-by: Namhyung Kim <namhyung@gmail.com> Cc: Divyesh Shah <dpshah@google.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Diffstat (limited to 'block')
-rw-r--r--block/blk-core.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/block/blk-core.c b/block/blk-core.c
index 7369eeeafe23..c8303e9d919d 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -1122,6 +1122,7 @@ static bool bio_attempt_back_merge(struct request_queue *q, struct request *req,
req->ioprio = ioprio_best(req->ioprio, bio_prio(bio));
drive_stat_acct(req, 0);
+ elv_bio_merged(q, req, bio);
return true;
}
@@ -1155,6 +1156,7 @@ static bool bio_attempt_front_merge(struct request_queue *q,
req->ioprio = ioprio_best(req->ioprio, bio_prio(bio));
drive_stat_acct(req, 0);
+ elv_bio_merged(q, req, bio);
return true;
}