pull mnt_want_write()/mnt_drop_write() into kern_path_create()/done_path_create() resp.

One side effect - attempt to create a cross-device link on a read-only fs fails
with EROFS instead of EXDEV now.  Makes more sense, POSIX allows, etc.

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

1 files changed, 0 insertions, 7 deletions

diff --git a/fs/ocfs2/refcounttree.c b/fs/ocfs2/refcounttree.c
index 23cf78f68503..30a055049e16 100644
--- a/fs/ocfs2/refcounttree.c
+++ b/fs/ocfs2/refcounttree.c
@@ -4466,16 +4466,9 @@ int ocfs2_reflink_ioctl(struct inode *inode,
                 goto out_dput;
         }
 
-        error = mnt_want_write(new_path.mnt);
-        if (error) {
-                mlog_errno(error);
-                goto out_dput;
-        }
-
         error = ocfs2_vfs_reflink(old_path.dentry,
                                   new_path.dentry->d_inode,
                                   new_dentry, preserve);
-        mnt_drop_write(new_path.mnt);
 out_dput:
         done_path_create(&new_path, new_dentry);
 out: