Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: rbd: fix safety of rbd_put_client() rbd: fix a memory leak in rbd_get_client() ceph: create a new session lock to avoid lock inversion ceph: fix length validation in parse_reply_info() ceph: initialize client debugfs outside of monc->mutex ceph: change "ceph.layout" xattr to be "ceph.file.layout"
This commit is contained in:
commit
6c073a7ee2
8 changed files with 36 additions and 15 deletions
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@ -380,6 +380,7 @@ static int rbd_get_client(struct rbd_device *rbd_dev, const char *mon_addr,
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rbdc = __rbd_client_find(opt);
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if (rbdc) {
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ceph_destroy_options(opt);
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kfree(rbd_opts);
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/* using an existing client */
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kref_get(&rbdc->kref);
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@ -406,15 +407,15 @@ done_err:
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/*
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* Destroy ceph client
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*
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* Caller must hold node_lock.
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*/
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static void rbd_client_release(struct kref *kref)
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{
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struct rbd_client *rbdc = container_of(kref, struct rbd_client, kref);
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dout("rbd_release_client %p\n", rbdc);
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spin_lock(&node_lock);
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list_del(&rbdc->node);
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spin_unlock(&node_lock);
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ceph_destroy_client(rbdc->client);
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kfree(rbdc->rbd_opts);
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@ -427,7 +428,9 @@ static void rbd_client_release(struct kref *kref)
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*/
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static void rbd_put_client(struct rbd_device *rbd_dev)
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{
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spin_lock(&node_lock);
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kref_put(&rbd_dev->rbd_client->kref, rbd_client_release);
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spin_unlock(&node_lock);
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rbd_dev->rbd_client = NULL;
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rbd_dev->client = NULL;
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}
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@ -641,10 +641,10 @@ static int __cap_is_valid(struct ceph_cap *cap)
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unsigned long ttl;
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u32 gen;
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spin_lock(&cap->session->s_cap_lock);
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spin_lock(&cap->session->s_gen_ttl_lock);
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gen = cap->session->s_cap_gen;
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ttl = cap->session->s_cap_ttl;
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spin_unlock(&cap->session->s_cap_lock);
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spin_unlock(&cap->session->s_gen_ttl_lock);
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if (cap->cap_gen < gen || time_after_eq(jiffies, ttl)) {
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dout("__cap_is_valid %p cap %p issued %s "
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@ -975,10 +975,10 @@ static int dentry_lease_is_valid(struct dentry *dentry)
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di = ceph_dentry(dentry);
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if (di->lease_session) {
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s = di->lease_session;
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spin_lock(&s->s_cap_lock);
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spin_lock(&s->s_gen_ttl_lock);
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gen = s->s_cap_gen;
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ttl = s->s_cap_ttl;
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spin_unlock(&s->s_cap_lock);
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spin_unlock(&s->s_gen_ttl_lock);
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if (di->lease_gen == gen &&
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time_before(jiffies, dentry->d_time) &&
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@ -262,6 +262,7 @@ static int parse_reply_info(struct ceph_msg *msg,
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/* trace */
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ceph_decode_32_safe(&p, end, len, bad);
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if (len > 0) {
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ceph_decode_need(&p, end, len, bad);
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err = parse_reply_info_trace(&p, p+len, info, features);
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if (err < 0)
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goto out_bad;
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@ -270,6 +271,7 @@ static int parse_reply_info(struct ceph_msg *msg,
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/* extra */
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ceph_decode_32_safe(&p, end, len, bad);
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if (len > 0) {
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ceph_decode_need(&p, end, len, bad);
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err = parse_reply_info_extra(&p, p+len, info, features);
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if (err < 0)
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goto out_bad;
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@ -398,9 +400,11 @@ static struct ceph_mds_session *register_session(struct ceph_mds_client *mdsc,
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s->s_con.peer_name.type = CEPH_ENTITY_TYPE_MDS;
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s->s_con.peer_name.num = cpu_to_le64(mds);
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spin_lock_init(&s->s_cap_lock);
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spin_lock_init(&s->s_gen_ttl_lock);
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s->s_cap_gen = 0;
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s->s_cap_ttl = 0;
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spin_lock_init(&s->s_cap_lock);
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s->s_renew_requested = 0;
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s->s_renew_seq = 0;
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INIT_LIST_HEAD(&s->s_caps);
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@ -2326,10 +2330,10 @@ static void handle_session(struct ceph_mds_session *session,
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case CEPH_SESSION_STALE:
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pr_info("mds%d caps went stale, renewing\n",
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session->s_mds);
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spin_lock(&session->s_cap_lock);
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spin_lock(&session->s_gen_ttl_lock);
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session->s_cap_gen++;
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session->s_cap_ttl = 0;
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spin_unlock(&session->s_cap_lock);
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spin_unlock(&session->s_gen_ttl_lock);
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send_renew_caps(mdsc, session);
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break;
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@ -117,10 +117,13 @@ struct ceph_mds_session {
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void *s_authorizer_buf, *s_authorizer_reply_buf;
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size_t s_authorizer_buf_len, s_authorizer_reply_buf_len;
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/* protected by s_cap_lock */
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spinlock_t s_cap_lock;
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/* protected by s_gen_ttl_lock */
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spinlock_t s_gen_ttl_lock;
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u32 s_cap_gen; /* inc each time we get mds stale msg */
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unsigned long s_cap_ttl; /* when session caps expire */
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/* protected by s_cap_lock */
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spinlock_t s_cap_lock;
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struct list_head s_caps; /* all caps issued by this session */
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int s_nr_caps, s_trim_caps;
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int s_num_cap_releases;
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@ -111,8 +111,10 @@ static size_t ceph_vxattrcb_layout(struct ceph_inode_info *ci, char *val,
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}
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static struct ceph_vxattr_cb ceph_file_vxattrs[] = {
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{ true, "ceph.file.layout", ceph_vxattrcb_layout},
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/* The following extended attribute name is deprecated */
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{ true, "ceph.layout", ceph_vxattrcb_layout},
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{ NULL, NULL }
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{ true, NULL, NULL }
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};
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static struct ceph_vxattr_cb *ceph_inode_vxattrs(struct inode *inode)
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@ -85,8 +85,6 @@ int ceph_check_fsid(struct ceph_client *client, struct ceph_fsid *fsid)
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} else {
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pr_info("client%lld fsid %pU\n", ceph_client_id(client), fsid);
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memcpy(&client->fsid, fsid, sizeof(*fsid));
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ceph_debugfs_client_init(client);
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client->have_fsid = true;
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}
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return 0;
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}
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@ -8,8 +8,8 @@
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#include <linux/ceph/mon_client.h>
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#include <linux/ceph/libceph.h>
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#include <linux/ceph/debugfs.h>
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#include <linux/ceph/decode.h>
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#include <linux/ceph/auth.h>
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/*
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@ -340,8 +340,19 @@ static void ceph_monc_handle_map(struct ceph_mon_client *monc,
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client->monc.monmap = monmap;
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kfree(old);
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if (!client->have_fsid) {
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client->have_fsid = true;
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mutex_unlock(&monc->mutex);
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/*
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* do debugfs initialization without mutex to avoid
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* creating a locking dependency
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*/
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ceph_debugfs_client_init(client);
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goto out_unlocked;
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}
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out:
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mutex_unlock(&monc->mutex);
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out_unlocked:
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wake_up_all(&client->auth_wq);
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}
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