[JFFS2][XATTR] Fix ACL bug when updating null xattr by null ACL.

This patch enable to handle the case when updating null xattr
by null ACL.

When we try to set NULL into NULL xattr, xattr subsystem returns
-ENODATA. This patch enables to handle this error code.

[2/3] jffs2-xattr-v6-02-fix_posixacl_bug.patch

Signed-off-by: KaiGai Kohei <kaigai@ak.jp.nec.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

diff --git a/fs/jffs2/acl.c b/fs/jffs2/acl.c
index 320dd48b834ee48beaa821daede6fd1d2c9f99ae..9c2077e7e081c7375b3df564fa1b8e3b6e2d4722 100644 (file)
--- a/fs/jffs2/acl.c
+++ b/fs/jffs2/acl.c
@@ -267,6 +267,8 @@ static int jffs2_set_acl(struct inode *inode, int type, struct posix_acl *acl)
        }
 
        rc = do_jffs2_setxattr(inode, xprefix, "", value, size, 0);
+       if (!value && rc == -ENODATA)
+               rc = 0;
        if (value)
                kfree(value);
        if (!rc) {