* This file is released under the GPL.
*/
-#include "dm.h"
+#include <linux/device-mapper.h>
+
#include "dm-path-selector.h"
#include "dm-bio-list.h"
#include "dm-bio-record.h"
struct list_head list;
struct priority_group *pg; /* Owning PG */
+ unsigned is_active; /* Path status */
unsigned fail_count; /* Cumulative failure count */
struct dm_path path;
+ struct work_struct deactivate_path;
};
#define path_to_pgpath(__pgp) container_of((__pgp), struct pgpath, path)
static void process_queued_ios(struct work_struct *work);
static void trigger_event(struct work_struct *work);
static void activate_path(struct work_struct *work);
+static void deactivate_path(struct work_struct *work);
/*-----------------------------------------------
{
struct pgpath *pgpath = kzalloc(sizeof(*pgpath), GFP_KERNEL);
- if (pgpath)
- pgpath->path.is_active = 1;
+ if (pgpath) {
+ pgpath->is_active = 1;
+ INIT_WORK(&pgpath->deactivate_path, deactivate_path);
+ }
return pgpath;
}
kfree(pgpath);
}
+static void deactivate_path(struct work_struct *work)
+{
+ struct pgpath *pgpath =
+ container_of(work, struct pgpath, deactivate_path);
+
+ blk_abort_queue(pgpath->path.dev->bdev->bd_disk->queue);
+}
+
static struct priority_group *alloc_priority_group(void)
{
struct priority_group *pg;
/* we need at least a path arg */
if (as->argc < 1) {
ti->error = "no device given";
- return NULL;
+ return ERR_PTR(-EINVAL);
}
p = alloc_pgpath();
if (!p)
- return NULL;
+ return ERR_PTR(-ENOMEM);
r = dm_get_device(ti, shift(as), ti->begin, ti->len,
dm_table_get_mode(ti->table), &p->path.dev);
bad:
free_pgpath(p);
- return NULL;
+ return ERR_PTR(r);
}
static struct priority_group *parse_priority_group(struct arg_set *as,
if (as->argc < 2) {
as->argc = 0;
- ti->error = "not enough priority group aruments";
- return NULL;
+ ti->error = "not enough priority group arguments";
+ return ERR_PTR(-EINVAL);
}
pg = alloc_priority_group();
if (!pg) {
ti->error = "couldn't allocate priority group";
- return NULL;
+ return ERR_PTR(-ENOMEM);
}
pg->m = m;
path_args.argv = as->argv;
pgpath = parse_path(&path_args, &pg->ps, ti);
- if (!pgpath)
+ if (IS_ERR(pgpath)) {
+ r = PTR_ERR(pgpath);
goto bad;
+ }
pgpath->pg = pg;
list_add_tail(&pgpath->list, &pg->pgpaths);
bad:
free_priority_group(pg, ti);
- return NULL;
+ return ERR_PTR(r);
}
static int parse_hw_handler(struct arg_set *as, struct multipath *m)
struct priority_group *pg;
pg = parse_priority_group(&as, m);
- if (!pg) {
- r = -EINVAL;
+ if (IS_ERR(pg)) {
+ r = PTR_ERR(pg);
goto bad;
}
dm_bio_record(&mpio->details, bio);
map_context->ptr = mpio;
- bio->bi_rw |= (1 << BIO_RW_FAILFAST);
+ bio->bi_rw |= (1 << BIO_RW_FAILFAST_TRANSPORT);
r = map_io(m, bio, mpio, 0);
if (r < 0 || r == DM_MAPIO_REQUEUE)
mempool_free(mpio, m->mpio_pool);
spin_lock_irqsave(&m->lock, flags);
- if (!pgpath->path.is_active)
+ if (!pgpath->is_active)
goto out;
DMWARN("Failing path %s.", pgpath->path.dev->name);
pgpath->pg->ps.type->fail_path(&pgpath->pg->ps, &pgpath->path);
- pgpath->path.is_active = 0;
+ pgpath->is_active = 0;
pgpath->fail_count++;
m->nr_valid_paths--;
pgpath->path.dev->name, m->nr_valid_paths);
queue_work(kmultipathd, &m->trigger_event);
+ queue_work(kmultipathd, &pgpath->deactivate_path);
out:
spin_unlock_irqrestore(&m->lock, flags);
spin_lock_irqsave(&m->lock, flags);
- if (pgpath->path.is_active)
+ if (pgpath->is_active)
goto out;
if (!pgpath->pg->ps.type->reinstate_path) {
if (r)
goto out;
- pgpath->path.is_active = 1;
+ pgpath->is_active = 1;
m->current_pgpath = NULL;
if (!m->nr_valid_paths++ && m->queue_size)
list_for_each_entry(p, &pg->pgpaths, list) {
DMEMIT("%s %s %u ", p->path.dev->name,
- p->path.is_active ? "A" : "F",
+ p->is_active ? "A" : "F",
p->fail_count);
if (pg->ps.type->status)
sz += pg->ps.type->status(&pg->ps,