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path: root/fs/ceph/mds_client.c
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Diffstat (limited to 'fs/ceph/mds_client.c')
-rw-r--r--fs/ceph/mds_client.c75
1 files changed, 59 insertions, 16 deletions
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index 1d3fa90d40b9..f38e56fa9712 100644
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -189,6 +189,7 @@ static int parse_reply_info_dir(void **p, void *end,
info->dir_end = !!(flags & CEPH_READDIR_FRAG_END);
info->dir_complete = !!(flags & CEPH_READDIR_FRAG_COMPLETE);
info->hash_order = !!(flags & CEPH_READDIR_HASH_ORDER);
+ info->offset_hash = !!(flags & CEPH_READDIR_OFFSET_HASH);
}
if (num == 0)
goto done;
@@ -378,9 +379,9 @@ const char *ceph_session_state_name(int s)
static struct ceph_mds_session *get_session(struct ceph_mds_session *s)
{
- if (atomic_inc_not_zero(&s->s_ref)) {
+ if (refcount_inc_not_zero(&s->s_ref)) {
dout("mdsc get_session %p %d -> %d\n", s,
- atomic_read(&s->s_ref)-1, atomic_read(&s->s_ref));
+ refcount_read(&s->s_ref)-1, refcount_read(&s->s_ref));
return s;
} else {
dout("mdsc get_session %p 0 -- FAIL", s);
@@ -391,8 +392,8 @@ static struct ceph_mds_session *get_session(struct ceph_mds_session *s)
void ceph_put_mds_session(struct ceph_mds_session *s)
{
dout("mdsc put_session %p %d -> %d\n", s,
- atomic_read(&s->s_ref), atomic_read(&s->s_ref)-1);
- if (atomic_dec_and_test(&s->s_ref)) {
+ refcount_read(&s->s_ref), refcount_read(&s->s_ref)-1);
+ if (refcount_dec_and_test(&s->s_ref)) {
if (s->s_auth.authorizer)
ceph_auth_destroy_authorizer(s->s_auth.authorizer);
kfree(s);
@@ -411,7 +412,7 @@ struct ceph_mds_session *__ceph_lookup_mds_session(struct ceph_mds_client *mdsc,
return NULL;
session = mdsc->sessions[mds];
dout("lookup_mds_session %p %d\n", session,
- atomic_read(&session->s_ref));
+ refcount_read(&session->s_ref));
get_session(session);
return session;
}
@@ -441,7 +442,7 @@ static struct ceph_mds_session *register_session(struct ceph_mds_client *mdsc,
{
struct ceph_mds_session *s;
- if (mds >= mdsc->mdsmap->m_max_mds)
+ if (mds >= mdsc->mdsmap->m_num_mds)
return ERR_PTR(-EINVAL);
s = kzalloc(sizeof(*s), GFP_NOFS);
@@ -466,7 +467,7 @@ static struct ceph_mds_session *register_session(struct ceph_mds_client *mdsc,
INIT_LIST_HEAD(&s->s_caps);
s->s_nr_caps = 0;
s->s_trim_caps = 0;
- atomic_set(&s->s_ref, 1);
+ refcount_set(&s->s_ref, 1);
INIT_LIST_HEAD(&s->s_waiting);
INIT_LIST_HEAD(&s->s_unsafe);
s->s_num_cap_releases = 0;
@@ -494,7 +495,7 @@ static struct ceph_mds_session *register_session(struct ceph_mds_client *mdsc,
}
mdsc->sessions[mds] = s;
atomic_inc(&mdsc->num_sessions);
- atomic_inc(&s->s_ref); /* one ref to sessions[], one to caller */
+ refcount_inc(&s->s_ref); /* one ref to sessions[], one to caller */
ceph_con_open(&s->s_con, CEPH_ENTITY_TYPE_MDS, mds,
ceph_mdsmap_get_addr(mdsc->mdsmap, mds));
@@ -1004,7 +1005,7 @@ static void __open_export_target_sessions(struct ceph_mds_client *mdsc,
struct ceph_mds_session *ts;
int i, mds = session->s_mds;
- if (mds >= mdsc->mdsmap->m_max_mds)
+ if (mds >= mdsc->mdsmap->m_num_mds)
return;
mi = &mdsc->mdsmap->m_info[mds];
@@ -1551,9 +1552,15 @@ void ceph_send_cap_releases(struct ceph_mds_client *mdsc,
struct ceph_msg *msg = NULL;
struct ceph_mds_cap_release *head;
struct ceph_mds_cap_item *item;
+ struct ceph_osd_client *osdc = &mdsc->fsc->client->osdc;
struct ceph_cap *cap;
LIST_HEAD(tmp_list);
int num_cap_releases;
+ __le32 barrier, *cap_barrier;
+
+ down_read(&osdc->lock);
+ barrier = cpu_to_le32(osdc->epoch_barrier);
+ up_read(&osdc->lock);
spin_lock(&session->s_cap_lock);
again:
@@ -1571,7 +1578,11 @@ again:
head = msg->front.iov_base;
head->num = cpu_to_le32(0);
msg->front.iov_len = sizeof(*head);
+
+ msg->hdr.version = cpu_to_le16(2);
+ msg->hdr.compat_version = cpu_to_le16(1);
}
+
cap = list_first_entry(&tmp_list, struct ceph_cap,
session_caps);
list_del(&cap->session_caps);
@@ -1589,6 +1600,11 @@ again:
ceph_put_cap(mdsc, cap);
if (le32_to_cpu(head->num) == CEPH_CAPS_PER_RELEASE) {
+ // Append cap_barrier field
+ cap_barrier = msg->front.iov_base + msg->front.iov_len;
+ *cap_barrier = barrier;
+ msg->front.iov_len += sizeof(*cap_barrier);
+
msg->hdr.front_len = cpu_to_le32(msg->front.iov_len);
dout("send_cap_releases mds%d %p\n", session->s_mds, msg);
ceph_con_send(&session->s_con, msg);
@@ -1604,6 +1620,11 @@ again:
spin_unlock(&session->s_cap_lock);
if (msg) {
+ // Append cap_barrier field
+ cap_barrier = msg->front.iov_base + msg->front.iov_len;
+ *cap_barrier = barrier;
+ msg->front.iov_len += sizeof(*cap_barrier);
+
msg->hdr.front_len = cpu_to_le32(msg->front.iov_len);
dout("send_cap_releases mds%d %p\n", session->s_mds, msg);
ceph_con_send(&session->s_con, msg);
@@ -1993,7 +2014,7 @@ static struct ceph_msg *create_request_message(struct ceph_mds_client *mdsc,
if (req->r_pagelist) {
struct ceph_pagelist *pagelist = req->r_pagelist;
- atomic_inc(&pagelist->refcnt);
+ refcount_inc(&pagelist->refcnt);
ceph_msg_data_add_pagelist(msg, pagelist);
msg->hdr.data_len = cpu_to_le32(pagelist->length);
} else {
@@ -2640,8 +2661,10 @@ static void handle_session(struct ceph_mds_session *session,
seq = le64_to_cpu(h->seq);
mutex_lock(&mdsc->mutex);
- if (op == CEPH_SESSION_CLOSE)
+ if (op == CEPH_SESSION_CLOSE) {
+ get_session(session);
__unregister_session(mdsc, session);
+ }
/* FIXME: this ttl calculation is generous */
session->s_ttl = jiffies + HZ*mdsc->mdsmap->m_session_autoclose;
mutex_unlock(&mdsc->mutex);
@@ -2730,6 +2753,8 @@ static void handle_session(struct ceph_mds_session *session,
kick_requests(mdsc, mds);
mutex_unlock(&mdsc->mutex);
}
+ if (op == CEPH_SESSION_CLOSE)
+ ceph_put_mds_session(session);
return;
bad:
@@ -3109,7 +3134,7 @@ static void check_new_map(struct ceph_mds_client *mdsc,
dout("check_new_map new %u old %u\n",
newmap->m_epoch, oldmap->m_epoch);
- for (i = 0; i < oldmap->m_max_mds && i < mdsc->max_sessions; i++) {
+ for (i = 0; i < oldmap->m_num_mds && i < mdsc->max_sessions; i++) {
if (mdsc->sessions[i] == NULL)
continue;
s = mdsc->sessions[i];
@@ -3123,15 +3148,33 @@ static void check_new_map(struct ceph_mds_client *mdsc,
ceph_mdsmap_is_laggy(newmap, i) ? " (laggy)" : "",
ceph_session_state_name(s->s_state));
- if (i >= newmap->m_max_mds ||
+ if (i >= newmap->m_num_mds ||
memcmp(ceph_mdsmap_get_addr(oldmap, i),
ceph_mdsmap_get_addr(newmap, i),
sizeof(struct ceph_entity_addr))) {
if (s->s_state == CEPH_MDS_SESSION_OPENING) {
/* the session never opened, just close it
* out now */
+ get_session(s);
+ __unregister_session(mdsc, s);
__wake_requests(mdsc, &s->s_waiting);
+ ceph_put_mds_session(s);
+ } else if (i >= newmap->m_num_mds) {
+ /* force close session for stopped mds */
+ get_session(s);
__unregister_session(mdsc, s);
+ __wake_requests(mdsc, &s->s_waiting);
+ kick_requests(mdsc, i);
+ mutex_unlock(&mdsc->mutex);
+
+ mutex_lock(&s->s_mutex);
+ cleanup_session_requests(mdsc, s);
+ remove_session_caps(s);
+ mutex_unlock(&s->s_mutex);
+
+ ceph_put_mds_session(s);
+
+ mutex_lock(&mdsc->mutex);
} else {
/* just close it */
mutex_unlock(&mdsc->mutex);
@@ -3169,7 +3212,7 @@ static void check_new_map(struct ceph_mds_client *mdsc,
}
}
- for (i = 0; i < newmap->m_max_mds && i < mdsc->max_sessions; i++) {
+ for (i = 0; i < newmap->m_num_mds && i < mdsc->max_sessions; i++) {
s = mdsc->sessions[i];
if (!s)
continue;
@@ -3883,7 +3926,7 @@ static struct ceph_connection *con_get(struct ceph_connection *con)
struct ceph_mds_session *s = con->private;
if (get_session(s)) {
- dout("mdsc con_get %p ok (%d)\n", s, atomic_read(&s->s_ref));
+ dout("mdsc con_get %p ok (%d)\n", s, refcount_read(&s->s_ref));
return con;
}
dout("mdsc con_get %p FAIL\n", s);
@@ -3894,7 +3937,7 @@ static void con_put(struct ceph_connection *con)
{
struct ceph_mds_session *s = con->private;
- dout("mdsc con_put %p (%d)\n", s, atomic_read(&s->s_ref) - 1);
+ dout("mdsc con_put %p (%d)\n", s, refcount_read(&s->s_ref) - 1);
ceph_put_mds_session(s);
}
generated by cgit (git 2.34.1) at 2024-05-23 05:04:04 +0000