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| author | Mike Snitzer <snitzer@redhat.com> | 2017-12-11 22:08:54 +0100 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2017-12-20 16:51:13 +0100 |
| commit | d07a241d4f9aaab61b4a2ce7ec8053ad429c4232 (patch) | |
| tree | 43eb0150223b90f83e18ffbc68e926e0fdca9a5b /drivers/md/dm-mpath.c | |
| parent | dm mpath: remove unnecessary memset() calls for per-io-data (diff) | |
| download | linux-d07a241d4f9aaab61b4a2ce7ec8053ad429c4232.tar.xz linux-d07a241d4f9aaab61b4a2ce7ec8053ad429c4232.zip | |
dm mpath: optimize retrieval of bio_details from per-bio-data
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md/dm-mpath.c')
| -rw-r--r-- | drivers/md/dm-mpath.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c index a3acbfb638be..40d721df11d3 100644 --- a/drivers/md/dm-mpath.c +++ b/drivers/md/dm-mpath.c @@ -264,19 +264,17 @@ static struct dm_mpath_io *get_mpio_from_bio(struct bio *bio) return dm_per_bio_data(bio, multipath_per_bio_data_size()); } -static struct dm_bio_details *get_bio_details_from_bio(struct bio *bio) +static struct dm_bio_details *get_bio_details_from_mpio(struct dm_mpath_io *mpio) { /* dm_bio_details is immediately after the dm_mpath_io in bio's per-bio-data */ - struct dm_mpath_io *mpio = get_mpio_from_bio(bio); void *bio_details = mpio + 1; - return bio_details; } static void multipath_init_per_bio_data(struct bio *bio, struct dm_mpath_io **mpio_p) { struct dm_mpath_io *mpio = get_mpio_from_bio(bio); - struct dm_bio_details *bio_details = get_bio_details_from_bio(bio); + struct dm_bio_details *bio_details = get_bio_details_from_mpio(mpio); mpio->nr_bytes = bio->bi_iter.bi_size; mpio->pgpath = NULL; @@ -1554,7 +1552,7 @@ static int multipath_end_io_bio(struct dm_target *ti, struct bio *clone, } /* Queue for the daemon to resubmit */ - dm_bio_restore(get_bio_details_from_bio(clone), clone); + dm_bio_restore(get_bio_details_from_mpio(mpio), clone); spin_lock_irqsave(&m->lock, flags); bio_list_add(&m->queued_bios, clone); |