ceph: don't truncate file in atomic_open
authorHu Weiwen <sehuww@mail.scut.edu.cn>
Fri, 1 Jul 2022 02:52:27 +0000 (10:52 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 15 Oct 2022 05:59:01 +0000 (07:59 +0200)
commit2f96da3fd18fd7ba21768a3e5e0d2fdd4fde0b17
treeae7706a21e0743ff03573b96645020fcc8703c25
parentc0c3d3d3ea41cb5228ee90568bb953f9a56c3227
ceph: don't truncate file in atomic_open

commit 7cb9994754f8a36ae9e5ec4597c5c4c2d6c03832 upstream.

Clear O_TRUNC from the flags sent in the MDS create request.

`atomic_open' is called before permission check. We should not do any
modification to the file here. The caller will do the truncation
afterward.

Fixes: 124e68e74099 ("ceph: file operations")
Signed-off-by: Hu Weiwen <sehuww@mail.scut.edu.cn>
Reviewed-by: Xiubo Li <xiubli@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
[Xiubo: fixed a trivial conflict for 5.19 backport]
Signed-off-by: Xiubo Li <xiubli@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
fs/ceph/file.c