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Diffstat (limited to 'fs/ceph/mds_client.c')
-rw-r--r--fs/ceph/mds_client.c34
1 files changed, 22 insertions, 12 deletions
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index b49f12822cb..3ab79f6c4ce 100644
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -1066,9 +1066,9 @@ static int trim_caps(struct ceph_mds_client *mdsc,
*
* Called under s_mutex.
*/
-static int add_cap_releases(struct ceph_mds_client *mdsc,
- struct ceph_mds_session *session,
- int extra)
+int ceph_add_cap_releases(struct ceph_mds_client *mdsc,
+ struct ceph_mds_session *session,
+ int extra)
{
struct ceph_msg *msg;
struct ceph_mds_cap_release *head;
@@ -1176,8 +1176,8 @@ static int check_cap_flush(struct ceph_mds_client *mdsc, u64 want_flush_seq)
/*
* called under s_mutex
*/
-static void send_cap_releases(struct ceph_mds_client *mdsc,
- struct ceph_mds_session *session)
+void ceph_send_cap_releases(struct ceph_mds_client *mdsc,
+ struct ceph_mds_session *session)
{
struct ceph_msg *msg;
@@ -1980,7 +1980,7 @@ out_err:
}
mutex_unlock(&mdsc->mutex);
- add_cap_releases(mdsc, req->r_session, -1);
+ ceph_add_cap_releases(mdsc, req->r_session, -1);
mutex_unlock(&session->s_mutex);
/* kick calling process */
@@ -2433,6 +2433,7 @@ static void handle_lease(struct ceph_mds_client *mdsc,
struct ceph_dentry_info *di;
int mds = session->s_mds;
struct ceph_mds_lease *h = msg->front.iov_base;
+ u32 seq;
struct ceph_vino vino;
int mask;
struct qstr dname;
@@ -2446,6 +2447,7 @@ static void handle_lease(struct ceph_mds_client *mdsc,
vino.ino = le64_to_cpu(h->ino);
vino.snap = CEPH_NOSNAP;
mask = le16_to_cpu(h->mask);
+ seq = le32_to_cpu(h->seq);
dname.name = (void *)h + sizeof(*h) + sizeof(u32);
dname.len = msg->front.iov_len - sizeof(*h) - sizeof(u32);
if (dname.len != get_unaligned_le32(h+1))
@@ -2456,8 +2458,9 @@ static void handle_lease(struct ceph_mds_client *mdsc,
/* lookup inode */
inode = ceph_find_inode(sb, vino);
- dout("handle_lease '%s', mask %d, ino %llx %p\n",
- ceph_lease_op_name(h->action), mask, vino.ino, inode);
+ dout("handle_lease %s, mask %d, ino %llx %p %.*s\n",
+ ceph_lease_op_name(h->action), mask, vino.ino, inode,
+ dname.len, dname.name);
if (inode == NULL) {
dout("handle_lease no inode %llx\n", vino.ino);
goto release;
@@ -2482,7 +2485,8 @@ static void handle_lease(struct ceph_mds_client *mdsc,
switch (h->action) {
case CEPH_MDS_LEASE_REVOKE:
if (di && di->lease_session == session) {
- h->seq = cpu_to_le32(di->lease_seq);
+ if (ceph_seq_cmp(di->lease_seq, seq) > 0)
+ h->seq = cpu_to_le32(di->lease_seq);
__ceph_mdsc_drop_dentry_lease(dentry);
}
release = 1;
@@ -2496,7 +2500,7 @@ static void handle_lease(struct ceph_mds_client *mdsc,
unsigned long duration =
le32_to_cpu(h->duration_ms) * HZ / 1000;
- di->lease_seq = le32_to_cpu(h->seq);
+ di->lease_seq = seq;
dentry->d_time = di->lease_renew_from + duration;
di->lease_renew_after = di->lease_renew_from +
(duration >> 1);
@@ -2686,10 +2690,10 @@ static void delayed_work(struct work_struct *work)
send_renew_caps(mdsc, s);
else
ceph_con_keepalive(&s->s_con);
- add_cap_releases(mdsc, s, -1);
+ ceph_add_cap_releases(mdsc, s, -1);
if (s->s_state == CEPH_MDS_SESSION_OPEN ||
s->s_state == CEPH_MDS_SESSION_HUNG)
- send_cap_releases(mdsc, s);
+ ceph_send_cap_releases(mdsc, s);
mutex_unlock(&s->s_mutex);
ceph_put_mds_session(s);
@@ -2779,6 +2783,12 @@ void ceph_mdsc_pre_umount(struct ceph_mds_client *mdsc)
drop_leases(mdsc);
ceph_flush_dirty_caps(mdsc);
wait_requests(mdsc);
+
+ /*
+ * wait for reply handlers to drop their request refs and
+ * their inode/dcache refs
+ */
+ ceph_msgr_flush();
}
/*