diff options
| author | Krishnan Parthasarathi <kparthas@redhat.com> | 2012-11-26 13:09:44 +0530 |
|---|---|---|
| committer | Anand Avati <avati@redhat.com> | 2012-11-28 16:27:01 -0800 |
| commit | fadc34e7ce82f9e7f98f20e995cb2bbf71a00b20 (patch) | |
| tree | 4f78b550af17a89314314342428abf588511ad49 /xlators | |
| parent | 5f88d4c1b036228ca4036e854d533f0b2fc3adc1 (diff) | |
glusterd: Protected conf->xprt_list racy access.
- epoll on RPCSVC_EVENT_ACCEPT would add corresponding xprt
onto the xprt_list. Concurrently, synctask thread (volume op)
would call into glusterd_fetchspec_notify which iterates on
the xprt_list. Added a mutex to protect such a racy access of
the list.
Change-Id: Idc51b4bdb1c814dfab7790e1c899d6977f7640f2
BUG: 878873
Signed-off-by: Krishnan Parthasarathi <kparthas@redhat.com>
Reviewed-on: http://review.gluster.org/4241
Reviewed-by: Raghavendra G <raghavendra@gluster.com>
Reviewed-by: Jeff Darcy <jdarcy@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Diffstat (limited to 'xlators')
| -rw-r--r-- | xlators/mgmt/glusterd/src/glusterd.c | 16 | ||||
| -rw-r--r-- | xlators/mgmt/glusterd/src/glusterd.h | 1 |
2 files changed, 14 insertions, 3 deletions
diff --git a/xlators/mgmt/glusterd/src/glusterd.c b/xlators/mgmt/glusterd/src/glusterd.c index 02dd5fac78b..bd9e6e031fa 100644 --- a/xlators/mgmt/glusterd/src/glusterd.c +++ b/xlators/mgmt/glusterd/src/glusterd.c @@ -156,10 +156,15 @@ glusterd_fetchspec_notify (xlator_t *this) priv = this->private; - list_for_each_entry (trans, &priv->xprt_list, list) { - rpcsvc_callback_submit (priv->rpc, trans, &glusterd_cbk_prog, - GF_CBK_FETCHSPEC, NULL, 0); + pthread_mutex_lock (&priv->xprt_lock); + { + list_for_each_entry (trans, &priv->xprt_list, list) { + rpcsvc_callback_submit (priv->rpc, trans, + &glusterd_cbk_prog, + GF_CBK_FETCHSPEC, NULL, 0); + } } + pthread_mutex_unlock (&priv->xprt_lock); ret = 0; @@ -217,12 +222,16 @@ glusterd_rpcsvc_notify (rpcsvc_t *rpc, void *xl, rpcsvc_event_t event, { INIT_LIST_HEAD (&xprt->list); + pthread_mutex_lock (&priv->xprt_lock); list_add_tail (&xprt->list, &priv->xprt_list); + pthread_mutex_unlock (&priv->xprt_lock); break; } case RPCSVC_EVENT_DISCONNECT: { + pthread_mutex_lock (&priv->xprt_lock); list_del (&xprt->list); + pthread_mutex_unlock (&priv->xprt_lock); pmap_registry_remove (this, 0, NULL, GF_PMAP_PORT_NONE, xprt); break; } @@ -995,6 +1004,7 @@ init (xlator_t *this) conf->gfs_mgmt = &gd_brick_prog; strncpy (conf->workdir, workdir, PATH_MAX); + pthread_mutex_init (&conf->xprt_lock, NULL); INIT_LIST_HEAD (&conf->xprt_list); glusterd_friend_sm_init (); diff --git a/xlators/mgmt/glusterd/src/glusterd.h b/xlators/mgmt/glusterd/src/glusterd.h index c2041ad3194..fddfabd344f 100644 --- a/xlators/mgmt/glusterd/src/glusterd.h +++ b/xlators/mgmt/glusterd/src/glusterd.h @@ -135,6 +135,7 @@ typedef struct { nodesrv_t *nfs; struct pmap_registry *pmap; struct list_head volumes; + pthread_mutex_t xprt_lock; struct list_head xprt_list; glusterd_store_handle_t *handle; gf_timer_t *timer; |