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btrfs: allow idmapped rename inode op

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Enable btrfs_rename() to handle idmapped mounts. This is just a matter
of passing down the mount's userns.

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Christian Brauner 2021-07-27 12:48:42 +02:00 committed by David Sterba
parent b3b6f5b922
commit ca07274c3d
1 changed files with 10 additions and 7 deletions
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17
fs/btrfs/inode.c
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@ -9550,6 +9550,7 @@ static int btrfs_rename_exchange(struct inode *old_dir,
static int btrfs_whiteout_for_rename(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct user_namespace *mnt_userns,
struct inode *dir,
struct dentry *dentry)
{
@ -9562,7 +9563,7 @@ static int btrfs_whiteout_for_rename(struct btrfs_trans_handle *trans,
if (ret)
return ret;
inode = btrfs_new_inode(trans, root, &init_user_ns, dir,
inode = btrfs_new_inode(trans, root, mnt_userns, dir,
dentry->d_name.name,
dentry->d_name.len,
btrfs_ino(BTRFS_I(dir)),
@ -9599,9 +9600,10 @@ static int btrfs_whiteout_for_rename(struct btrfs_trans_handle *trans,
return ret;
}
static int btrfs_rename(struct inode *old_dir, struct dentry *old_dentry,
struct inode *new_dir, struct dentry *new_dentry,
unsigned int flags)
static int btrfs_rename(struct user_namespace *mnt_userns,
struct inode *old_dir, struct dentry *old_dentry,
struct inode *new_dir, struct dentry *new_dentry,
unsigned int flags)
{
struct btrfs_fs_info *fs_info = btrfs_sb(old_dir->i_sb);
struct btrfs_trans_handle *trans;
@ -9791,8 +9793,8 @@ static int btrfs_rename(struct inode *old_dir, struct dentry *old_dentry,
}
if (flags & RENAME_WHITEOUT) {
ret = btrfs_whiteout_for_rename(trans, root, old_dir,
old_dentry);
ret = btrfs_whiteout_for_rename(trans, root, mnt_userns,
old_dir, old_dentry);
if (ret) {
btrfs_abort_transaction(trans, ret);
@ -9842,7 +9844,8 @@ static int btrfs_rename2(struct user_namespace *mnt_userns, struct inode *old_di
return btrfs_rename_exchange(old_dir, old_dentry, new_dir,
new_dentry);
return btrfs_rename(old_dir, old_dentry, new_dir, new_dentry, flags);
return btrfs_rename(mnt_userns, old_dir, old_dentry, new_dir,
new_dentry, flags);
}
struct btrfs_delalloc_work {