Btrfs: delete unused function: btrfs_invalidate_dcache_root

Snapshot and subvolume creation no longer need this helper.

Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 0 insertions, 25 deletions

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index bd58ba655a4d..09efc9473a3d 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -4359,31 +4359,6 @@ out:
 }
 
 /*
- * Invalidate a single dcache entry at the root of the filesystem.
- * Needed after creation of snapshot or subvolume.
- */
-static void btrfs_invalidate_dcache_root(struct inode *dir,
-                char *name, int namelen)
-{
-        struct dentry *alias, *entry;
-        struct qstr qstr;
-
-        alias = d_find_alias(dir);
-        if (alias) {
-                qstr.name = name;
-                qstr.len = namelen;
-                /* change me if btrfs ever gets a d_hash operation */
-                qstr.hash = full_name_hash(qstr.name, qstr.len);
-                entry = d_lookup(alias, &qstr);
-                dput(alias);
-                if (entry) {
-                        d_invalidate(entry);
-                        dput(entry);
-                }
-        }
-}
-
-/*
  * create a new subvolume directory/inode (helper for the ioctl).
  */
 int btrfs_create_subvol_root(struct btrfs_root *new_root, struct dentry *dentry,