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| author | Philipp Reisner | 2010-11-09 17:45:06 +0100 |
|---|---|---|
| committer | Philipp Reisner | 2011-03-10 11:34:57 +0100 |
| commit | aeda1cd6a58009ef21b6d9c09b1a3ded726c2d10 (patch) | |
| tree | bfe98db19ead95ce7021798b80299fe1942db42d /drivers/block/drbd/drbd_req.c | |
| parent | drbd: Implemented side-stepping in drbd_res_begin_io() (diff) | |
| download | kernel-qcow2-linux-aeda1cd6a58009ef21b6d9c09b1a3ded726c2d10.tar.gz kernel-qcow2-linux-aeda1cd6a58009ef21b6d9c09b1a3ded726c2d10.tar.xz kernel-qcow2-linux-aeda1cd6a58009ef21b6d9c09b1a3ded726c2d10.zip | |
drbd: Begin to account BIO processing time before inc_ap_bio()
Since inc_ap_bio() might sleep already
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Diffstat (limited to 'drivers/block/drbd/drbd_req.c')
| -rw-r--r-- | drivers/block/drbd/drbd_req.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/block/drbd/drbd_req.c b/drivers/block/drbd/drbd_req.c index a8d1ff2bda27..eff0fbf69dd4 100644 --- a/drivers/block/drbd/drbd_req.c +++ b/drivers/block/drbd/drbd_req.c @@ -757,7 +757,7 @@ static int drbd_may_do_local_read(struct drbd_conf *mdev, sector_t sector, int s return 0 == drbd_bm_count_bits(mdev, sbnr, ebnr); } -static int drbd_make_request_common(struct drbd_conf *mdev, struct bio *bio) +static int drbd_make_request_common(struct drbd_conf *mdev, struct bio *bio, unsigned long start_time) { const int rw = bio_rw(bio); const int size = bio->bi_size; @@ -778,6 +778,7 @@ static int drbd_make_request_common(struct drbd_conf *mdev, struct bio *bio) bio_endio(bio, -ENOMEM); return 0; } + req->start_time = start_time; local = get_ldev(mdev); if (!local) { @@ -1076,12 +1077,15 @@ int drbd_make_request_26(struct request_queue *q, struct bio *bio) { unsigned int s_enr, e_enr; struct drbd_conf *mdev = (struct drbd_conf *) q->queuedata; + unsigned long start_time; if (drbd_fail_request_early(mdev, bio_data_dir(bio) & WRITE)) { bio_endio(bio, -EPERM); return 0; } + start_time = jiffies; + /* * what we "blindly" assume: */ @@ -1096,7 +1100,7 @@ int drbd_make_request_26(struct request_queue *q, struct bio *bio) if (likely(s_enr == e_enr)) { inc_ap_bio(mdev, 1); - return drbd_make_request_common(mdev, bio); + return drbd_make_request_common(mdev, bio, start_time); } /* can this bio be split generically? @@ -1138,10 +1142,10 @@ int drbd_make_request_26(struct request_queue *q, struct bio *bio) D_ASSERT(e_enr == s_enr + 1); - while (drbd_make_request_common(mdev, &bp->bio1)) + while (drbd_make_request_common(mdev, &bp->bio1, start_time)) inc_ap_bio(mdev, 1); - while (drbd_make_request_common(mdev, &bp->bio2)) + while (drbd_make_request_common(mdev, &bp->bio2, start_time)) inc_ap_bio(mdev, 1); dec_ap_bio(mdev); |