[PATCH 5/5] hpfs: fix an inode leak in lookup, switch to d_splice_alias()

[Al Viro]

From: Al Viro <v...@zeniv.linux.org.uk>

Signed-off-by: Al Viro <v...@zeniv.linux.org.uk>
---
 fs/hpfs/dir.c | 23 +++++++----------------
 1 file changed, 7 insertions(+), 16 deletions(-)

diff --git a/fs/hpfs/dir.c b/fs/hpfs/dir.c
index c83ece7facc5..d85230c84ef2 100644
--- a/fs/hpfs/dir.c
+++ b/fs/hpfs/dir.c
@@ -244,6 +244,7 @@ struct dentry *hpfs_lookup(struct inode *dir, struct dentry 
*dentry, unsigned in
        result = iget_locked(dir->i_sb, ino);
        if (!result) {
                hpfs_error(dir->i_sb, "hpfs_lookup: can't get inode");
+               result = ERR_PTR(-ENOMEM);
                goto bail1;
        }
        if (result->i_state & I_NEW) {
@@ -266,6 +267,8 @@ struct dentry *hpfs_lookup(struct inode *dir, struct dentry 
*dentry, unsigned in
 
        if (de->has_acl || de->has_xtd_perm) if (!sb_rdonly(dir->i_sb)) {
                hpfs_error(result->i_sb, "ACLs or XPERM found. This is probably 
HPFS386. This driver doesn't support it now. Send me some info on these 
structures");
+               iput(result);
+               result = ERR_PTR(-EINVAL);
                goto bail1;
        }
 
@@ -301,29 +304,17 @@ struct dentry *hpfs_lookup(struct inode *dir, struct 
dentry *dentry, unsigned in
                }
        }
 
+bail1:
        hpfs_brelse4(&qbh);
 
        /*
         * Made it.
         */
 
-       end:
-       end_add:
+end:
+end_add:
        hpfs_unlock(dir->i_sb);
-       d_add(dentry, result);
-       return NULL;
-
-       /*
-        * Didn't.
-        */
-       bail1:
-       
-       hpfs_brelse4(&qbh);
-       
-       /*bail:*/
-
-       hpfs_unlock(dir->i_sb);
-       return ERR_PTR(-ENOENT);
+       return d_splice_alias(result, dentry);
 }
 
 const struct file_operations hpfs_dir_ops =
-- 
2.11.0