linux-kernel - [PATCH] ocfs2: fix remounting needed after setfacl command

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Date:   Fri, 17 Jul 2020 10:37:51 +0800
From:   Gang He <ghe@...e.com>
To:     mark@...heh.com, jlbec@...lplan.org, joseph.qi@...ux.alibaba.com
Cc:     Gang He <ghe@...e.com>, linux-kernel@...r.kernel.org,
        ocfs2-devel@....oracle.com, akpm@...ux-foundation.org
Subject: [PATCH] ocfs2: fix remounting needed after setfacl command

When use setfacl command to change a file's acl, the user cannot
get the latest acl information from the file via getfacl command,
until remounting the file system.
e.g.
setfacl -m u:ivan:rw /ocfs2/ivan
getfacl /ocfs2/ivan
getfacl: Removing leading '/' from absolute path names
file: ocfs2/ivan
owner: root
group: root
user::rw-
group::r--
mask::r--
other::r--

The latest acl record("u:ivan:rw") cannot be returned via getfacl
command until remounting.

Signed-off-by: Gang He <ghe@...e.com>
---
 fs/ocfs2/acl.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/ocfs2/acl.c b/fs/ocfs2/acl.c
index bb981ec76456..7b07f5df3a29 100644
--- a/fs/ocfs2/acl.c
+++ b/fs/ocfs2/acl.c
@@ -256,6 +256,8 @@ static int ocfs2_set_acl(handle_t *handle,
 		ret = ocfs2_xattr_set(inode, name_index, "", value, size, 0);

 	kfree(value);
+	if (!ret)
+		set_cached_acl(inode, type, acl);

 	return ret;
 }
-- 
2.12.3