diff options
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/dm-mpath.c | 46 |
1 files changed, 24 insertions, 22 deletions
diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c index 07ca77f29438..e7d80baf8d69 100644 --- a/drivers/md/dm-mpath.c +++ b/drivers/md/dm-mpath.c @@ -398,29 +398,31 @@ static int multipath_map(struct dm_target *ti, struct request *clone, pgpath = m->current_pgpath; - if (pgpath) { - if (pg_ready(m)) { - if (set_mapinfo(m, map_context) < 0) - /* ENOMEM, requeue */ - goto out_unlock; - - bdev = pgpath->path.dev->bdev; - clone->q = bdev_get_queue(bdev); - clone->rq_disk = bdev->bd_disk; - clone->cmd_flags |= REQ_FAILFAST_TRANSPORT; - mpio = map_context->ptr; - mpio->pgpath = pgpath; - mpio->nr_bytes = nr_bytes; - if (pgpath->pg->ps.type->start_io) - pgpath->pg->ps.type->start_io(&pgpath->pg->ps, - &pgpath->path, - nr_bytes); - r = DM_MAPIO_REMAPPED; - goto out_unlock; - } + if (!pgpath) { + if (!__must_push_back(m)) + r = -EIO; /* Failed */ + goto out_unlock; + } + if (!pg_ready(m)) { __pg_init_all_paths(m); - } else if (!__must_push_back(m)) - r = -EIO; /* Failed */ + goto out_unlock; + } + if (set_mapinfo(m, map_context) < 0) + /* ENOMEM, requeue */ + goto out_unlock; + + bdev = pgpath->path.dev->bdev; + clone->q = bdev_get_queue(bdev); + clone->rq_disk = bdev->bd_disk; + clone->cmd_flags |= REQ_FAILFAST_TRANSPORT; + mpio = map_context->ptr; + mpio->pgpath = pgpath; + mpio->nr_bytes = nr_bytes; + if (pgpath->pg->ps.type->start_io) + pgpath->pg->ps.type->start_io(&pgpath->pg->ps, + &pgpath->path, + nr_bytes); + r = DM_MAPIO_REMAPPED; out_unlock: spin_unlock_irqrestore(&m->lock, flags); |
