ll_get_child_fid(): callers already have the child

no need to bother with d_lookup()

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

diff --git a/drivers/staging/lustre/lustre/llite/namei.c b/drivers/staging/lustre/lustre/llite/namei.c
index e1434bb..572e7f7 100644 (file)
--- a/drivers/staging/lustre/lustre/llite/namei.c
+++ b/drivers/staging/lustre/lustre/llite/namei.c
@@ -909,20 +909,10 @@ out:
        return err;
 }
 
-/* Try to find the child dentry by its name.
-   If found, put the result fid into @fid. */
-static void ll_get_child_fid(struct inode * dir, struct qstr *name,
-                            struct lu_fid *fid)
+static inline void ll_get_child_fid(struct dentry *child, struct lu_fid *fid)
 {
-       struct dentry *parent, *child;
-
-       parent = ll_d_hlist_entry(dir->i_dentry, struct dentry, d_u.d_alias);
-       child = d_lookup(parent, name);
-       if (child) {
-               if (child->d_inode)
-                       *fid = *ll_inode2fid(child->d_inode);
-               dput(child);
-       }
+       if (child->d_inode)
+               *fid = *ll_inode2fid(child->d_inode);
 }
 
 /**
@@ -1057,7 +1047,7 @@ static int ll_unlink(struct inode * dir, struct dentry *dentry)
        if (IS_ERR(op_data))
                return PTR_ERR(op_data);
 
-       ll_get_child_fid(dir, &dentry->d_name, &op_data->op_fid3);
+       ll_get_child_fid(dentry, &op_data->op_fid3);
        op_data->op_fid2 = op_data->op_fid3;
        rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
        ll_finish_md_op_data(op_data);
@@ -1110,7 +1100,7 @@ static int ll_rmdir(struct inode *dir, struct dentry *dentry)
        if (IS_ERR(op_data))
                return PTR_ERR(op_data);
 
-       ll_get_child_fid(dir, &dentry->d_name, &op_data->op_fid3);
+       ll_get_child_fid(dentry, &op_data->op_fid3);
        op_data->op_fid2 = op_data->op_fid3;
        rc = md_unlink(ll_i2sbi(dir)->ll_md_exp, op_data, &request);
        ll_finish_md_op_data(op_data);
@@ -1171,8 +1161,8 @@ static int ll_rename(struct inode *old_dir, struct dentry *old_dentry,
        if (IS_ERR(op_data))
                return PTR_ERR(op_data);
 
-       ll_get_child_fid(old_dir, &old_dentry->d_name, &op_data->op_fid3);
-       ll_get_child_fid(new_dir, &new_dentry->d_name, &op_data->op_fid4);
+       ll_get_child_fid(old_dentry, &op_data->op_fid3);
+       ll_get_child_fid(new_dentry, &op_data->op_fid4);
        err = md_rename(sbi->ll_md_exp, op_data,
                        old_dentry->d_name.name,
                        old_dentry->d_name.len,