diff options
author | 2016-04-11 10:41:07 +0300 | |
---|---|---|
committer | 2016-04-13 08:17:18 +0300 | |
commit | e09b41010ba33a20a87472ee821fa407a5b8da36 (patch) | |
tree | d10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/drivers/md/multipath.c | |
parent | f93b97fd65072de626c074dbe099a1fff05ce060 (diff) |
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page.
During the rebasing, the following patch collided:
Force tick interrupt and get rid of softirq magic(I70131fb85).
Collisions have been removed because its logic was found on the
source already.
Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/drivers/md/multipath.c')
-rw-r--r-- | kernel/drivers/md/multipath.c | 40 |
1 files changed, 10 insertions, 30 deletions
diff --git a/kernel/drivers/md/multipath.c b/kernel/drivers/md/multipath.c index ac3ede2bd..0a72ab6e6 100644 --- a/kernel/drivers/md/multipath.c +++ b/kernel/drivers/md/multipath.c @@ -77,18 +77,18 @@ static void multipath_end_bh_io (struct multipath_bh *mp_bh, int err) struct bio *bio = mp_bh->master_bio; struct mpconf *conf = mp_bh->mddev->private; - bio_endio(bio, err); + bio->bi_error = err; + bio_endio(bio); mempool_free(mp_bh, conf->pool); } -static void multipath_end_request(struct bio *bio, int error) +static void multipath_end_request(struct bio *bio) { - int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags); struct multipath_bh *mp_bh = bio->bi_private; struct mpconf *conf = mp_bh->mddev->private; struct md_rdev *rdev = conf->multipaths[mp_bh->path].rdev; - if (uptodate) + if (!bio->bi_error) multipath_end_bh_io(mp_bh, 0); else if (!(bio->bi_rw & REQ_RAHEAD)) { /* @@ -101,7 +101,7 @@ static void multipath_end_request(struct bio *bio, int error) (unsigned long long)bio->bi_iter.bi_sector); multipath_reschedule_retry(mp_bh); } else - multipath_end_bh_io(mp_bh, error); + multipath_end_bh_io(mp_bh, bio->bi_error); rdev_dec_pending(rdev, conf->mddev); } @@ -123,7 +123,7 @@ static void multipath_make_request(struct mddev *mddev, struct bio * bio) mp_bh->path = multipath_map(conf); if (mp_bh->path < 0) { - bio_endio(bio, -EIO); + bio_io_error(bio); mempool_free(mp_bh, conf->pool); return; } @@ -257,18 +257,9 @@ static int multipath_add_disk(struct mddev *mddev, struct md_rdev *rdev) disk_stack_limits(mddev->gendisk, rdev->bdev, rdev->data_offset << 9); - /* as we don't honour merge_bvec_fn, we must never risk - * violating it, so limit ->max_segments to one, lying - * within a single page. - * (Note: it is very unlikely that a device with - * merge_bvec_fn will be involved in multipath.) - */ - if (q->merge_bvec_fn) { - blk_queue_max_segments(mddev->queue, 1); - blk_queue_segment_boundary(mddev->queue, - PAGE_CACHE_SIZE - 1); - } - + err = md_integrity_add_rdev(rdev, mddev); + if (err) + break; spin_lock_irq(&conf->device_lock); mddev->degraded--; rdev->raid_disk = path; @@ -276,7 +267,6 @@ static int multipath_add_disk(struct mddev *mddev, struct md_rdev *rdev) spin_unlock_irq(&conf->device_lock); rcu_assign_pointer(p->rdev, rdev); err = 0; - md_integrity_add_rdev(rdev, mddev); break; } @@ -432,15 +422,6 @@ static int multipath_run (struct mddev *mddev) disk_stack_limits(mddev->gendisk, rdev->bdev, rdev->data_offset << 9); - /* as we don't honour merge_bvec_fn, we must never risk - * violating it, not that we ever expect a device with - * a merge_bvec_fn to be involved in multipath */ - if (rdev->bdev->bd_disk->queue->merge_bvec_fn) { - blk_queue_max_segments(mddev->queue, 1); - blk_queue_segment_boundary(mddev->queue, - PAGE_CACHE_SIZE - 1); - } - if (!test_bit(Faulty, &rdev->flags)) working_disks++; } @@ -491,8 +472,7 @@ static int multipath_run (struct mddev *mddev) return 0; out_free_conf: - if (conf->pool) - mempool_destroy(conf->pool); + mempool_destroy(conf->pool); kfree(conf->multipaths); kfree(conf); mddev->private = NULL; |