From: Yan, Zheng <zyan@redhat.com>
Date: Thu, 23 Nov 2017 10:28:16 +0000 (+0800)
Subject: ceph: voluntarily drop Fx cap for readdir request
X-Git-Tag: Ubuntu-5.13.0-19.19~11606^2~12
X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=87c91a965aa28809888cbae3b2de35a486ed7107;p=mirror_ubuntu-jammy-kernel.git

ceph: voluntarily drop Fx cap for readdir request

MDS need to rdlock directory inode's filelock when handling readdir
request. Voluntarily dropping CEPH_CAP_AUTH_EXCL avoids a cap revoke
message.

Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
---

diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index aa2618f12cb7..9fde02cd5568 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -381,6 +381,7 @@ more:
 		if (op == CEPH_MDS_OP_READDIR) {
 			req->r_direct_hash = ceph_frag_value(frag);
 			__set_bit(CEPH_MDS_R_DIRECT_IS_HASH, &req->r_req_flags);
+			req->r_inode_drop = CEPH_CAP_FILE_EXCL;
 		}
 		if (fi->last_name) {
 			req->r_path2 = kstrdup(fi->last_name, GFP_KERNEL);