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btrfs: don't try to notify udev about missing devices 

If we remove a missing device, bdev is null, and if we
send that off to btrfs_kobject_uevent we'll panic.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
This commit is contained in:
Eric Sandeen 2013-01-31 00:55:02 +00:00 committed by Chris Mason
parent 57ba86c00f
commit 3c91160808
1 changed files with 2 additions and 1 deletions
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3
fs/btrfs/volumes.c
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@ -1556,7 +1556,8 @@ int btrfs_rm_device(struct btrfs_root *root, char *device_path)
ret = 0;
/* Notify udev that device has changed */
btrfs_kobject_uevent(bdev, KOBJ_CHANGE);
if (bdev)
btrfs_kobject_uevent(bdev, KOBJ_CHANGE);
error_brelse:
brelse(bh);