summaryrefslogtreecommitdiff
path: root/block/blk-flush.c
diff options
context:
space:
mode:
authorTejun Heo <tj@kernel.org>2011-01-25 12:43:49 +0100
committerJens Axboe <jaxboe@fusionio.com>2011-01-25 12:43:49 +0100
commit414b4ff5eecff0097d09c4a7da12e435fd503692 (patch)
treecc7cd46c1455712af672b3ff872800b3da895837 /block/blk-flush.c
parent3c0eee3fe6a3a1c745379547c7e7c904aa64f6d5 (diff)
downloadlwn-414b4ff5eecff0097d09c4a7da12e435fd503692.tar.gz
lwn-414b4ff5eecff0097d09c4a7da12e435fd503692.zip
block: add REQ_FLUSH_SEQ
rq == &q->flush_rq was used to determine whether a rq is part of a flush sequence, which worked because all requests in a flush sequence were sequenced using the single dedicated request. This is about to change, so introduce REQ_FLUSH_SEQ flag to distinguish flush sequence requests. This patch doesn't cause any behavior change. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Diffstat (limited to 'block/blk-flush.c')
-rw-r--r--block/blk-flush.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/block/blk-flush.c b/block/blk-flush.c
index 54b123d6563e..8592869bcbe7 100644
--- a/block/blk-flush.c
+++ b/block/blk-flush.c
@@ -130,6 +130,7 @@ static struct request *queue_next_fseq(struct request_queue *q)
BUG();
}
+ rq->cmd_flags |= REQ_FLUSH_SEQ;
elv_insert(q, rq, ELEVATOR_INSERT_FRONT);
return rq;
}