ceph: don't bother with d_rehash() in splice_dentry()

d_splice_alias() guarantees that it'll be always hashed

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index fb4ba2e..05dd66f 100644 (file)
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -975,13 +975,8 @@ out_unlock:
 /*
  * splice a dentry to an inode.
  * caller must hold directory i_mutex for this to be safe.
- *
- * we will only rehash the resulting dentry if @prehash is
- * true; @prehash will be set to false (for the benefit of
- * the caller) if we fail.
  */
-static struct dentry *splice_dentry(struct dentry *dn, struct inode *in,
-                                   bool *prehash)
+static struct dentry *splice_dentry(struct dentry *dn, struct inode *in)
 {
        struct dentry *realdn;
 
@@ -994,8 +989,6 @@ static struct dentry *splice_dentry(struct dentry *dn, struct inode *in,
        if (IS_ERR(realdn)) {
                pr_err("splice_dentry error %ld %p inode %p ino %llx.%llx\n",
                       PTR_ERR(realdn), dn, in, ceph_vinop(in));
-               if (prehash)
-                       *prehash = false; /* don't rehash on error */
                dn = realdn; /* note realdn contains the error */
                goto out;
        } else if (realdn) {
@@ -1011,8 +1004,6 @@ static struct dentry *splice_dentry(struct dentry *dn, struct inode *in,
                dout("dn %p attached to %p ino %llx.%llx\n",
                     dn, d_inode(dn), ceph_vinop(d_inode(dn)));
        }
-       if ((!prehash || *prehash) && d_unhashed(dn))
-               d_rehash(dn);
 out:
        return dn;
 }
@@ -1260,7 +1251,7 @@ retry_lookup:
                if (d_really_is_negative(dn)) {
                        ceph_dir_clear_ordered(dir);
                        ihold(in);
-                       dn = splice_dentry(dn, in, &have_lease);
+                       dn = splice_dentry(dn, in);
                        if (IS_ERR(dn)) {
                                err = PTR_ERR(dn);
                                goto done;
@@ -1290,7 +1281,7 @@ retry_lookup:
                dout(" linking snapped dir %p to dn %p\n", in, dn);
                ceph_dir_clear_ordered(dir);
                ihold(in);
-               dn = splice_dentry(dn, in, NULL);
+               dn = splice_dentry(dn, in);
                if (IS_ERR(dn)) {
                        err = PTR_ERR(dn);
                        goto done;
@@ -1501,7 +1492,7 @@ retry_lookup:
                }
 
                if (d_really_is_negative(dn)) {
-                       struct dentry *realdn = splice_dentry(dn, in, NULL);
+                       struct dentry *realdn = splice_dentry(dn, in);
                        if (IS_ERR(realdn)) {
                                err = PTR_ERR(realdn);
                                d_drop(dn);