From: Jeff Mahoney <jeffm@suse.com>
Subject: btrfs: provide super_operations->inode_get_dev
References: bsc#927455
Patch-mainline: No, upstream wants a super_block per anon dev
In order to ensure that the per-subvolume anonymous dev_t gets published
to userspace, we need to provide the super_operations->get_inode_dev
operation.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
---
fs/btrfs/super.c | 6 ++++++
1 file changed, 6 insertions(+)
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -2264,6 +2264,11 @@ static int btrfs_show_devname(struct seq
return 0;
}
+static dev_t btrfs_get_inode_dev(const struct inode *inode)
+{
+ return BTRFS_I(inode)->root->anon_dev;
+}
+
static const struct super_operations btrfs_super_ops = {
.drop_inode = btrfs_drop_inode,
.evict_inode = btrfs_evict_inode,
@@ -2278,6 +2283,7 @@ static const struct super_operations btr
.remount_fs = btrfs_remount,
.freeze_fs = btrfs_freeze,
.unfreeze_fs = btrfs_unfreeze,
+ .get_inode_dev = btrfs_get_inode_dev,
};
static const struct file_operations btrfs_ctl_fops = {