btrfs: constify name of subvolume in creation helpers

Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 45a7085..dabfc7a 100644 (file)
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -434,7 +434,7 @@ int btrfs_is_empty_uuid(u8 *uuid)
 
 static noinline int create_subvol(struct inode *dir,
                                  struct dentry *dentry,
-                                 char *name, int namelen,
+                                 const char *name, int namelen,
                                  u64 *async_transid,
                                  struct btrfs_qgroup_inherit *inherit)
 {
@@ -832,7 +832,7 @@ static inline int btrfs_may_create(struct inode *dir, struct dentry *child)
  * inside this filesystem so it's quite a bit simpler.
  */
 static noinline int btrfs_mksubvol(const struct path *parent,
-                                  char *name, int namelen,
+                                  const char *name, int namelen,
                                   struct btrfs_root *snap_src,
                                   u64 *async_transid, bool readonly,
                                   struct btrfs_qgroup_inherit *inherit)
@@ -1625,7 +1625,7 @@ out:
 }
 
 static noinline int btrfs_ioctl_snap_create_transid(struct file *file,
-                               char *name, unsigned long fd, int subvol,
+                               const char *name, unsigned long fd, int subvol,
                                u64 *transid, bool readonly,
                                struct btrfs_qgroup_inherit *inherit)
 {