* [PATCH] btrfs: get the device in write mode when deleting it
@ 2012-12-07 10:09 Lukas Czerner
0 siblings, 0 replies; only message in thread
From: Lukas Czerner @ 2012-12-07 10:09 UTC (permalink / raw)
To: linux-btrfs; +Cc: chris.mason, Lukas Czerner
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 --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);
--
1.7.7.6
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