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Diffstat (limited to 'fs/ceph/mds_client.c')
-rw-r--r--fs/ceph/mds_client.c87
1 files changed, 58 insertions, 29 deletions
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index 2e8f90f96540..5ece2e6ad154 100644
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -100,6 +100,26 @@ static int parse_reply_info_in(void **p, void *end,
} else
info->inline_version = CEPH_INLINE_NONE;
+ if (features & CEPH_FEATURE_MDS_QUOTA) {
+ u8 struct_v, struct_compat;
+ u32 struct_len;
+
+ /*
+ * both struct_v and struct_compat are expected to be >= 1
+ */
+ ceph_decode_8_safe(p, end, struct_v, bad);
+ ceph_decode_8_safe(p, end, struct_compat, bad);
+ if (!struct_v || !struct_compat)
+ goto bad;
+ ceph_decode_32_safe(p, end, struct_len, bad);
+ ceph_decode_need(p, end, struct_len, bad);
+ ceph_decode_64_safe(p, end, info->max_bytes, bad);
+ ceph_decode_64_safe(p, end, info->max_files, bad);
+ } else {
+ info->max_bytes = 0;
+ info->max_files = 0;
+ }
+
info->pool_ns_len = 0;
info->pool_ns_data = NULL;
if (features & CEPH_FEATURE_FS_FILE_LAYOUT_V2) {
@@ -384,7 +404,7 @@ static struct ceph_mds_session *get_session(struct ceph_mds_session *s)
refcount_read(&s->s_ref)-1, refcount_read(&s->s_ref));
return s;
} else {
- dout("mdsc get_session %p 0 -- FAIL", s);
+ dout("mdsc get_session %p 0 -- FAIL\n", s);
return NULL;
}
}
@@ -419,9 +439,10 @@ struct ceph_mds_session *__ceph_lookup_mds_session(struct ceph_mds_client *mdsc,
static bool __have_session(struct ceph_mds_client *mdsc, int mds)
{
- if (mds >= mdsc->max_sessions)
+ if (mds >= mdsc->max_sessions || !mdsc->sessions[mds])
return false;
- return mdsc->sessions[mds];
+ else
+ return true;
}
static int __verify_registered_session(struct ceph_mds_client *mdsc,
@@ -448,6 +469,25 @@ static struct ceph_mds_session *register_session(struct ceph_mds_client *mdsc,
s = kzalloc(sizeof(*s), GFP_NOFS);
if (!s)
return ERR_PTR(-ENOMEM);
+
+ if (mds >= mdsc->max_sessions) {
+ int newmax = 1 << get_count_order(mds + 1);
+ struct ceph_mds_session **sa;
+
+ dout("%s: realloc to %d\n", __func__, newmax);
+ sa = kcalloc(newmax, sizeof(void *), GFP_NOFS);
+ if (!sa)
+ goto fail_realloc;
+ if (mdsc->sessions) {
+ memcpy(sa, mdsc->sessions,
+ mdsc->max_sessions * sizeof(void *));
+ kfree(mdsc->sessions);
+ }
+ mdsc->sessions = sa;
+ mdsc->max_sessions = newmax;
+ }
+
+ dout("%s: mds%d\n", __func__, mds);
s->s_mdsc = mdsc;
s->s_mds = mds;
s->s_state = CEPH_MDS_SESSION_NEW;
@@ -476,23 +516,6 @@ static struct ceph_mds_session *register_session(struct ceph_mds_client *mdsc,
INIT_LIST_HEAD(&s->s_cap_releases);
INIT_LIST_HEAD(&s->s_cap_flushing);
- dout("register_session mds%d\n", mds);
- if (mds >= mdsc->max_sessions) {
- int newmax = 1 << get_count_order(mds+1);
- struct ceph_mds_session **sa;
-
- dout("register_session realloc to %d\n", newmax);
- sa = kcalloc(newmax, sizeof(void *), GFP_NOFS);
- if (!sa)
- goto fail_realloc;
- if (mdsc->sessions) {
- memcpy(sa, mdsc->sessions,
- mdsc->max_sessions * sizeof(void *));
- kfree(mdsc->sessions);
- }
- mdsc->sessions = sa;
- mdsc->max_sessions = newmax;
- }
mdsc->sessions[mds] = s;
atomic_inc(&mdsc->num_sessions);
refcount_inc(&s->s_ref); /* one ref to sessions[], one to caller */
@@ -2531,10 +2554,10 @@ static void handle_reply(struct ceph_mds_session *session, struct ceph_msg *msg)
* Otherwise we just have to return an ESTALE
*/
if (result == -ESTALE) {
- dout("got ESTALE on request %llu", req->r_tid);
+ dout("got ESTALE on request %llu\n", req->r_tid);
req->r_resend_mds = -1;
if (req->r_direct_mode != USE_AUTH_MDS) {
- dout("not using auth, setting for that now");
+ dout("not using auth, setting for that now\n");
req->r_direct_mode = USE_AUTH_MDS;
__do_request(mdsc, req);
mutex_unlock(&mdsc->mutex);
@@ -2542,13 +2565,13 @@ static void handle_reply(struct ceph_mds_session *session, struct ceph_msg *msg)
} else {
int mds = __choose_mds(mdsc, req);
if (mds >= 0 && mds != req->r_session->s_mds) {
- dout("but auth changed, so resending");
+ dout("but auth changed, so resending\n");
__do_request(mdsc, req);
mutex_unlock(&mdsc->mutex);
goto out;
}
}
- dout("have to return ESTALE on request %llu", req->r_tid);
+ dout("have to return ESTALE on request %llu\n", req->r_tid);
}
@@ -3470,13 +3493,12 @@ void ceph_mdsc_lease_send_msg(struct ceph_mds_session *session,
}
/*
- * drop all leases (and dentry refs) in preparation for umount
+ * lock unlock sessions, to wait ongoing session activities
*/
-static void drop_leases(struct ceph_mds_client *mdsc)
+static void lock_unlock_sessions(struct ceph_mds_client *mdsc)
{
int i;
- dout("drop_leases\n");
mutex_lock(&mdsc->mutex);
for (i = 0; i < mdsc->max_sessions; i++) {
struct ceph_mds_session *s = __ceph_lookup_mds_session(mdsc, i);
@@ -3572,7 +3594,6 @@ int ceph_mdsc_init(struct ceph_fs_client *fsc)
if (!mdsc)
return -ENOMEM;
mdsc->fsc = fsc;
- fsc->mdsc = mdsc;
mutex_init(&mdsc->mutex);
mdsc->mdsmap = kzalloc(sizeof(*mdsc->mdsmap), GFP_NOFS);
if (!mdsc->mdsmap) {
@@ -3580,6 +3601,7 @@ int ceph_mdsc_init(struct ceph_fs_client *fsc)
return -ENOMEM;
}
+ fsc->mdsc = mdsc;
init_completion(&mdsc->safe_umount_waiters);
init_waitqueue_head(&mdsc->session_close_wq);
INIT_LIST_HEAD(&mdsc->waiting_for_map);
@@ -3587,6 +3609,7 @@ int ceph_mdsc_init(struct ceph_fs_client *fsc)
atomic_set(&mdsc->num_sessions, 0);
mdsc->max_sessions = 0;
mdsc->stopping = 0;
+ atomic64_set(&mdsc->quotarealms_count, 0);
mdsc->last_snap_seq = 0;
init_rwsem(&mdsc->snap_rwsem);
mdsc->snap_realms = RB_ROOT;
@@ -3660,7 +3683,7 @@ void ceph_mdsc_pre_umount(struct ceph_mds_client *mdsc)
dout("pre_umount\n");
mdsc->stopping = 1;
- drop_leases(mdsc);
+ lock_unlock_sessions(mdsc);
ceph_flush_dirty_caps(mdsc);
wait_requests(mdsc);
@@ -3858,6 +3881,9 @@ void ceph_mdsc_destroy(struct ceph_fs_client *fsc)
struct ceph_mds_client *mdsc = fsc->mdsc;
dout("mdsc_destroy %p\n", mdsc);
+ if (!mdsc)
+ return;
+
/* flush out any connection work with references to us */
ceph_msgr_flush();
@@ -4077,6 +4103,9 @@ static void dispatch(struct ceph_connection *con, struct ceph_msg *msg)
case CEPH_MSG_CLIENT_LEASE:
handle_lease(mdsc, s, msg);
break;
+ case CEPH_MSG_CLIENT_QUOTA:
+ ceph_handle_quota(mdsc, s, msg);
+ break;
default:
pr_err("received unknown message type %d %s\n", type,
generated by cgit (git 2.34.1) at 2024-05-27 22:04:31 +0000