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ceph: add check_session_state() helper and make it global

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And remove the unsed mdsc parameter to simplify the code.

Signed-off-by: Xiubo Li <xiubli@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Xiubo Li 2020-06-30 03:52:15 -04:00 committed by Ilya Dryomov
parent 6e6f0f0116
commit 3e699bd865
2 changed files with 30 additions and 20 deletions
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47
fs/ceph/mds_client.c
View file

@ -1785,8 +1785,7 @@ static void renewed_caps(struct ceph_mds_client *mdsc,
/*
* send a session close request
*/
static int request_close_session(struct ceph_mds_client *mdsc,
struct ceph_mds_session *session)
static int request_close_session(struct ceph_mds_session *session)
{
struct ceph_msg *msg;
@ -1809,7 +1808,7 @@ static int __close_session(struct ceph_mds_client *mdsc,
if (session->s_state >= CEPH_MDS_SESSION_CLOSING)
return 0;
session->s_state = CEPH_MDS_SESSION_CLOSING;
return request_close_session(mdsc, session);
return request_close_session(session);
}
static bool drop_negative_children(struct dentry *dentry)
@ -4263,6 +4262,29 @@ static void maybe_recover_session(struct ceph_mds_client *mdsc)
ceph_force_reconnect(fsc->sb);
}
bool check_session_state(struct ceph_mds_session *s)
{
if (s->s_state == CEPH_MDS_SESSION_CLOSING) {
dout("resending session close request for mds%d\n",
s->s_mds);
request_close_session(s);
return false;
}
if (s->s_ttl && time_after(jiffies, s->s_ttl)) {
if (s->s_state == CEPH_MDS_SESSION_OPEN) {
s->s_state = CEPH_MDS_SESSION_HUNG;
pr_info("mds%d hung\n", s->s_mds);
}
}
if (s->s_state == CEPH_MDS_SESSION_NEW ||
s->s_state == CEPH_MDS_SESSION_RESTARTING ||
s->s_state == CEPH_MDS_SESSION_REJECTED)
/* this mds is failed or recovering, just wait */
return false;
return true;
}
/*
* delayed work -- periodically trim expired leases, renew caps with mds
*/
@ -4294,23 +4316,8 @@ static void delayed_work(struct work_struct *work)
struct ceph_mds_session *s = __ceph_lookup_mds_session(mdsc, i);
if (!s)
continue;
if (s->s_state == CEPH_MDS_SESSION_CLOSING) {
dout("resending session close request for mds%d\n",
s->s_mds);
request_close_session(mdsc, s);
ceph_put_mds_session(s);
continue;
}
if (s->s_ttl && time_after(jiffies, s->s_ttl)) {
if (s->s_state == CEPH_MDS_SESSION_OPEN) {
s->s_state = CEPH_MDS_SESSION_HUNG;
pr_info("mds%d hung\n", s->s_mds);
}
}
if (s->s_state == CEPH_MDS_SESSION_NEW ||
s->s_state == CEPH_MDS_SESSION_RESTARTING ||
s->s_state == CEPH_MDS_SESSION_REJECTED) {
/* this mds is failed or recovering, just wait */
if (!check_session_state(s)) {
ceph_put_mds_session(s);
continue;
}

3
fs/ceph/mds_client.h
View file

@ -18,6 +18,7 @@
#include <linux/ceph/auth.h>
#include "metric.h"
#include "super.h"
/* The first 8 bits are reserved for old ceph releases */
enum ceph_feature_type {
@ -476,6 +477,8 @@ struct ceph_mds_client {
extern const char *ceph_mds_op_name(int op);
extern bool check_session_state(struct ceph_mds_session *s);
extern struct ceph_mds_session *
__ceph_lookup_mds_session(struct ceph_mds_client *, int mds);