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path: root/drivers/md/dm.c
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Diffstat (limited to 'drivers/md/dm.c')
-rw-r--r--drivers/md/dm.c15
1 files changed, 9 insertions, 6 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 00c76886081..3c6d4ee8921 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -512,12 +512,13 @@ static void queue_io(struct mapped_device *md, struct bio *bio)
struct dm_table *dm_get_table(struct mapped_device *md)
{
struct dm_table *t;
+ unsigned long flags;
- read_lock(&md->map_lock);
+ read_lock_irqsave(&md->map_lock, flags);
t = md->map;
if (t)
dm_table_get(t);
- read_unlock(&md->map_lock);
+ read_unlock_irqrestore(&md->map_lock, flags);
return t;
}
@@ -1910,6 +1911,7 @@ static int __bind(struct mapped_device *md, struct dm_table *t,
{
struct request_queue *q = md->queue;
sector_t size;
+ unsigned long flags;
size = dm_table_get_size(t);
@@ -1940,10 +1942,10 @@ static int __bind(struct mapped_device *md, struct dm_table *t,
__bind_mempools(md, t);
- write_lock(&md->map_lock);
+ write_lock_irqsave(&md->map_lock, flags);
md->map = t;
dm_table_set_restrictions(t, q, limits);
- write_unlock(&md->map_lock);
+ write_unlock_irqrestore(&md->map_lock, flags);
return 0;
}
@@ -1951,14 +1953,15 @@ static int __bind(struct mapped_device *md, struct dm_table *t,
static void __unbind(struct mapped_device *md)
{
struct dm_table *map = md->map;
+ unsigned long flags;
if (!map)
return;
dm_table_event_callback(map, NULL, NULL);
- write_lock(&md->map_lock);
+ write_lock_irqsave(&md->map_lock, flags);
md->map = NULL;
- write_unlock(&md->map_lock);
+ write_unlock_irqrestore(&md->map_lock, flags);
dm_table_destroy(map);
}