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[11/11] btrfs: don't try to notify udev about missing devices

Message ID 1359593702-53056-12-git-send-email-sandeen@redhat.com (mailing list archive)
State New, archived
Headers show

Commit Message

Eric Sandeen Jan. 31, 2013, 12:55 a.m. UTC 
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>
---
 fs/btrfs/volumes.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
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Patch

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 09c63ac..bdd6962 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -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);