From: Namhyung Kim Date: Thu, 25 Aug 2011 04:43:34 +0000 (+1000) Subject: md: use REQ_NOIDLE flag in md_super_write() X-Git-Tag: v3.1-rc5~4^2~3 X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=a5bf4df0c88b88d34b6f0e3bc8a402dac7d14611;p=~emulex%2Finfiniband.git md: use REQ_NOIDLE flag in md_super_write() Queue idling is used for the anticipation of immediate sequencial I/O's but md_super_write() is a kind of one- shot operation, coupled with md_super_wait(), so the idling in this case will be just a waste of time. Specifying REQ_NOIDLE prevents it. Instead of adding the flag to submit_bio() directly, use pre-defined macro WRITE_FLUSH_FUA. Signed-off-by: Namhyung Kim Signed-off-by: NeilBrown --- diff --git a/drivers/md/md.c b/drivers/md/md.c index 9a880239219..aca61171126 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -848,7 +848,7 @@ void md_super_write(mddev_t *mddev, mdk_rdev_t *rdev, bio->bi_end_io = super_written; atomic_inc(&mddev->pending_writes); - submit_bio(REQ_WRITE | REQ_SYNC | REQ_FLUSH | REQ_FUA, bio); + submit_bio(WRITE_FLUSH_FUA, bio); } void md_super_wait(mddev_t *mddev)