Merge git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm

* git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm:
  dm: detect lost queue
  dm: publish dm_vcalloc
  dm: publish dm_table_unplug_all
  dm: publish dm_get_mapinfo
  dm: export struct dm_dev
  dm crypt: avoid unnecessary wait when splitting bio
  dm crypt: tidy ctx pending
  dm crypt: fix async inc_pending
  dm crypt: move dec_pending on error into write_io_submit
  dm crypt: remove inc_pending from write_io_submit
  dm crypt: tidy write loop pending
  dm crypt: tidy crypt alloc
  dm crypt: tidy inc pending
  dm exception store: use chunk_t for_areas
  dm exception store: introduce area_location function
  dm raid1: kcopyd should stop on error if errors handled
  dm mpath: remove is_active from struct dm_path
  dm mpath: use more error codes

Fixed up trivial conflict in drivers/md/dm-mpath.c manually.

1 files changed, 19 insertions, 16 deletions

diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c
index 3d3848132c69..103304c1e3b0 100644
--- a/drivers/md/dm-mpath.c
+++ b/drivers/md/dm-mpath.c
@@ -30,6 +30,7 @@ struct pgpath {
         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;
@@ -125,7 +126,7 @@ static struct pgpath *alloc_pgpath(void)
         struct pgpath *pgpath = kzalloc(sizeof(*pgpath), GFP_KERNEL);
 
         if (pgpath) {
-                pgpath->path.is_active = 1;
+                pgpath->is_active = 1;
                 INIT_WORK(&pgpath->deactivate_path, deactivate_path);
         }
 
@@ -575,12 +576,12 @@ static struct pgpath *parse_path(struct arg_set *as, struct path_selector *ps,
         /* 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);
@@ -608,7 +609,7 @@ static struct pgpath *parse_path(struct arg_set *as, struct path_selector *ps,
 
  bad:
         free_pgpath(p);
-        return NULL;
+        return ERR_PTR(r);
 }
 
 static struct priority_group *parse_priority_group(struct arg_set *as,
@@ -626,14 +627,14 @@ 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;
 
@@ -666,8 +667,10 @@ static struct priority_group *parse_priority_group(struct arg_set *as,
                 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);
@@ -678,7 +681,7 @@ static struct priority_group *parse_priority_group(struct arg_set *as,
 
  bad:
         free_priority_group(pg, ti);
-        return NULL;
+        return ERR_PTR(r);
 }
 
 static int parse_hw_handler(struct arg_set *as, struct multipath *m)
@@ -797,8 +800,8 @@ static int multipath_ctr(struct dm_target *ti, unsigned int argc,
                 struct priority_group *pg;
 
                 pg = parse_priority_group(&as, m);
-                if (!pg) {
-                        r = -EINVAL;
+                if (IS_ERR(pg)) {
+                        r = PTR_ERR(pg);
                         goto bad;
                 }
 
@@ -864,13 +867,13 @@ static int fail_path(struct pgpath *pgpath)
 
         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--;
@@ -901,7 +904,7 @@ static int reinstate_path(struct pgpath *pgpath)
 
         spin_lock_irqsave(&m->lock, flags);
 
-        if (pgpath->path.is_active)
+        if (pgpath->is_active)
                 goto out;
 
         if (!pgpath->pg->ps.type->reinstate_path) {
@@ -915,7 +918,7 @@ static int reinstate_path(struct pgpath *pgpath)
         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)
@@ -1303,7 +1306,7 @@ static int multipath_status(struct dm_target *ti, status_type_t type,
 
                         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,