diff options
Diffstat (limited to 'drivers/md/dm.c')
| -rw-r--r-- | drivers/md/dm.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 52b39f335bb3..6b6616a41baa 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -25,6 +25,16 @@ #define DM_MSG_PREFIX "core" +#ifdef CONFIG_PRINTK +/* + * ratelimit state to be used in DMXXX_LIMIT(). + */ +DEFINE_RATELIMIT_STATE(dm_ratelimit_state, + DEFAULT_RATELIMIT_INTERVAL, + DEFAULT_RATELIMIT_BURST); +EXPORT_SYMBOL(dm_ratelimit_state); +#endif + /* * Cookies are numeric values sent with CHANGE and REMOVE * uevents while resuming, removing or renaming the device. @@ -130,6 +140,8 @@ struct mapped_device { /* Protect queue and type against concurrent access. */ struct mutex type_lock; + struct target_type *immutable_target_type; + struct gendisk *disk; char name[16]; @@ -2086,6 +2098,8 @@ static struct dm_table *__bind(struct mapped_device *md, struct dm_table *t, write_lock_irqsave(&md->map_lock, flags); old_map = md->map; md->map = t; + md->immutable_target_type = dm_table_get_immutable_target_type(t); + dm_table_set_restrictions(t, q, limits); if (merge_is_optional) set_bit(DMF_MERGE_IS_OPTIONAL, &md->flags); @@ -2156,6 +2170,11 @@ unsigned dm_get_md_type(struct mapped_device *md) return md->type; } +struct target_type *dm_get_immutable_target_type(struct mapped_device *md) +{ + return md->immutable_target_type; +} + /* * Fully initialize a request-based queue (->elevator, ->request_fn, etc). */ @@ -2231,6 +2250,7 @@ struct mapped_device *dm_get_md(dev_t dev) return md; } +EXPORT_SYMBOL_GPL(dm_get_md); void *dm_get_mdptr(struct mapped_device *md) { @@ -2316,7 +2336,6 @@ static int dm_wait_for_completion(struct mapped_device *md, int interruptible) while (1) { set_current_state(interruptible); - smp_mb(); if (!md_in_flight(md)) break; |