[PATCH] btrfs: get the device in write mode when deleting it
From: Lukas Czerner <hidden>
Date: 2012-12-07 10:09:23
Subsystem:
btrfs file system, filesystems (vfs and infrastructure), the rest · Maintainers:
Chris Mason, David Sterba, Alexander Viro, Christian Brauner, Linus Torvalds
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 <redacted> --- 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);
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1.7.7.6