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[PATCH] block_dev.c mutex_lock_nested() fix 

In the case below we are locking the whole disk not a partition.  This
change simply brings the code in line with the piece above where when we
are the 'first' opener, and we are a partition.

Signed-off-by: Jason Baron <jbaron@redhat.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jason Baron 2006-09-29 02:01:01 -07:00 committed by Linus Torvalds
parent 303912e2a3
commit 87d7c8aca8
1 changed files with 1 additions and 1 deletions
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2
fs/block_dev.c
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@ -1031,7 +1031,7 @@ do_open(struct block_device *bdev, struct file *file, unsigned int subclass)
rescan_partitions(bdev->bd_disk, bdev); rescan_partitions(bdev->bd_disk, bdev);
} else { } else {
mutex_lock_nested(&bdev->bd_contains->bd_mutex, mutex_lock_nested(&bdev->bd_contains->bd_mutex,
BD_MUTEX_PARTITION); BD_MUTEX_WHOLE);
bdev->bd_contains->bd_part_count++; bdev->bd_contains->bd_part_count++;
mutex_unlock(&bdev->bd_contains->bd_mutex); mutex_unlock(&bdev->bd_contains->bd_mutex);
} }