kexec jump: __ftrace_enabled_save/restore

[linux-2.6] / drivers / md / dm-table.c

diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index e75b1437b58b67ad8ecac097d6b3c50e9bf0b2ba..61f441409234e334048460bd6475eee2572d883c 100644 (file)
--- a/drivers/md/dm-table.c
+++ b/drivers/md/dm-table.c
@@ -245,44 +245,6 @@ int dm_table_create(struct dm_table **result, int mode,
        return 0;
 }
 
-int dm_create_error_table(struct dm_table **result, struct mapped_device *md)
-{
-       struct dm_table *t;
-       sector_t dev_size = 1;
-       int r;
-
-       /*
-        * Find current size of device.
-        * Default to 1 sector if inactive.
-        */
-       t = dm_get_table(md);
-       if (t) {
-               dev_size = dm_table_get_size(t);
-               dm_table_put(t);
-       }
-
-       r = dm_table_create(&t, FMODE_READ, 1, md);
-       if (r)
-               return r;
-
-       r = dm_table_add_target(t, "error", 0, dev_size, NULL);
-       if (r)
-               goto out;
-
-       r = dm_table_complete(t);
-       if (r)
-               goto out;
-
-       *result = t;
-
-out:
-       if (r)
-               dm_table_put(t);
-
-       return r;
-}
-EXPORT_SYMBOL_GPL(dm_create_error_table);
-
 static void free_devices(struct list_head *devices)
 {
        struct list_head *tmp, *next;
@@ -354,29 +316,12 @@ static inline int check_space(struct dm_table *t)
  */
 static int lookup_device(const char *path, dev_t *dev)
 {
-       int r;
-       struct nameidata nd;
-       struct inode *inode;
-
-       if ((r = path_lookup(path, LOOKUP_FOLLOW, &nd)))
-               return r;
-
-       inode = nd.path.dentry->d_inode;
-       if (!inode) {
-               r = -ENOENT;
-               goto out;
-       }
-
-       if (!S_ISBLK(inode->i_mode)) {
-               r = -ENOTBLK;
-               goto out;
-       }
-
-       *dev = inode->i_rdev;
-
- out:
-       path_put(&nd.path);
-       return r;
+       struct block_device *bdev = lookup_bdev(path);
+       if (IS_ERR(bdev))
+               return PTR_ERR(bdev);
+       *dev = bdev->bd_dev;
+       bdput(bdev);
+       return 0;
 }
 
 /*
@@ -544,14 +489,13 @@ void dm_set_device_limits(struct dm_target *ti, struct block_device *bdev)
        rs->max_sectors =
                min_not_zero(rs->max_sectors, q->max_sectors);
 
-       /* FIXME: Device-Mapper on top of RAID-0 breaks because DM
-        *        currently doesn't honor MD's merge_bvec_fn routine.
-        *        In this case, we'll force DM to use PAGE_SIZE or
-        *        smaller I/O, just to be safe. A better fix is in the
-        *        works, but add this for the time being so it will at
-        *        least operate correctly.
+       /*
+        * Check if merge fn is supported.
+        * If not we'll force DM to use PAGE_SIZE or
+        * smaller I/O, just to be safe.
         */
-       if (q->merge_bvec_fn)
+
+       if (q->merge_bvec_fn && !ti->type->merge)
                rs->max_sectors =
                        min_not_zero(rs->max_sectors,
                                     (unsigned int) (PAGE_SIZE >> 9));
@@ -911,10 +855,11 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q)
        q->max_hw_sectors = t->limits.max_hw_sectors;
        q->seg_boundary_mask = t->limits.seg_boundary_mask;
        q->bounce_pfn = t->limits.bounce_pfn;
+
        if (t->limits.no_cluster)
-               q->queue_flags &= ~(1 << QUEUE_FLAG_CLUSTER);
+               queue_flag_clear_unlocked(QUEUE_FLAG_CLUSTER, q);
        else
-               q->queue_flags |= (1 << QUEUE_FLAG_CLUSTER);
+               queue_flag_set_unlocked(QUEUE_FLAG_CLUSTER, q);
 
 }
 
@@ -954,7 +899,7 @@ void dm_table_presuspend_targets(struct dm_table *t)
        if (!t)
                return;
 
-       return suspend_targets(t, 0);
+       suspend_targets(t, 0);
 }
 
 void dm_table_postsuspend_targets(struct dm_table *t)
@@ -962,7 +907,7 @@ void dm_table_postsuspend_targets(struct dm_table *t)
        if (!t)
                return;
 
-       return suspend_targets(t, 1);
+       suspend_targets(t, 1);
 }
 
 int dm_table_resume_targets(struct dm_table *t)