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, 4 deletions

diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index e8239540683a..88ab72820b9f 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -876,15 +876,11 @@ static int unix_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
                  */
                 mode = S_IFSOCK |
                        (SOCK_INODE(sock)->i_mode & ~current_umask());
-                err = mnt_want_write(path.mnt);
-                if (err)
-                        goto out_mknod_dput;
                 err = security_path_mknod(&path, dentry, mode, 0);
                 if (err)
                         goto out_mknod_drop_write;
                 err = vfs_mknod(path.dentry->d_inode, dentry, mode, 0);
 out_mknod_drop_write:
-                mnt_drop_write(path.mnt);
                 if (err)
                         goto out_mknod_dput;
                 mntget(path.mnt);