diff mbox

btrfs: get the device in write mode when deleting it

Message ID 1354874959-1005-1-git-send-email-lczerner@redhat.com (mailing list archive)
State New, archived
Headers show

Commit Message

Lukas Czerner Dec. 7, 2012, 10:09 a.m. UTC 
When we're deleting the device we should get it in write mode since
we're going to re-write the super block magic on that device. And it
should fail if the device is read-only.

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
---
 fs/btrfs/volumes.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
diff mbox

Patch

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 95c6f7d..e3b9b36 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -1384,7 +1384,7 @@  int btrfs_rm_device(struct btrfs_root *root, char *device_path)
 			goto out;
 		}
 	} else {
-		bdev = blkdev_get_by_path(device_path, FMODE_READ | FMODE_EXCL,
+		bdev = blkdev_get_by_path(device_path, FMODE_WRITE | FMODE_EXCL,
 					  root->fs_info->bdev_holder);
 		if (IS_ERR(bdev)) {
 			ret = PTR_ERR(bdev);