diff options
| -rw-r--r-- | drivers/md/dm-snap.c | 4 | ||||
| -rw-r--r-- | drivers/md/dm-table.c | 1 |
2 files changed, 5 insertions, 0 deletions
diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c index 594d1f6b4789..ab54f99b7c3b 100644 --- a/drivers/md/dm-snap.c +++ b/drivers/md/dm-snap.c @@ -931,6 +931,10 @@ static int __origin_write(struct list_head *snapshots, struct bio *bio) if (!snap->valid) continue; + /* Nothing to do if writing beyond end of snapshot */ + if (bio->bi_sector >= dm_table_get_size(snap->table)) + continue; + down_write(&snap->lock); /* diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index 18e9b9953fcd..a5a4c0ed8a14 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -943,6 +943,7 @@ EXPORT_SYMBOL(dm_vcalloc); EXPORT_SYMBOL(dm_get_device); EXPORT_SYMBOL(dm_put_device); EXPORT_SYMBOL(dm_table_event); +EXPORT_SYMBOL(dm_table_get_size); EXPORT_SYMBOL(dm_table_get_mode); EXPORT_SYMBOL(dm_table_put); EXPORT_SYMBOL(dm_table_get); |