From: Christian Brauner <christian.brauner@ubuntu.com>
Date: Tue, 27 Jul 2021 10:48:50 +0000 (+0200)
Subject: btrfs: allow idmapped permission inode op
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=3bc71ba02cf5376b390289bef8c9f5d6049f1866;p=linux.git

btrfs: allow idmapped permission inode op

Enable btrfs_permission() 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>
---

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 88ac63f3b57bc..6ef2448a99372 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -10403,7 +10403,7 @@ static int btrfs_permission(struct user_namespace *mnt_userns,
 		if (BTRFS_I(inode)->flags & BTRFS_INODE_READONLY)
 			return -EACCES;
 	}
-	return generic_permission(&init_user_ns, inode, mask);
+	return generic_permission(mnt_userns, inode, mask);
 }
 
 static int btrfs_tmpfile(struct user_namespace *mnt_userns, struct inode *dir,