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Fri, 6 Sep 2013 03:28:30 GMT Received: from relay2.suse.de (unknown [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id AA3AAA398F; Fri, 6 Sep 2013 05:28:29 +0200 (CEST) Date: Thu, 5 Sep 2013 22:28:28 -0500 From: Goldwyn Rodrigues To: ocfs2-devel@oss.oracle.com Message-ID: <20130906032823.GA4168@shrek.lan> MIME-Version: 1.0 Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) X-Flow-Control-Info: class=Pass-to-MM reputation=ipRisk-All ip=195.135.220.15 ct-class=T2 ct-vol1=0 ct-vol2=4 ct-vol3=4 ct-risk=66 ct-spam1=82 ct-spam2=47 ct-bulk=27 rcpts=1 size=5931 X-SPF-Info: NONE::cantor2.suse.de X-Sendmail-CM-Score: 0.00% X-Sendmail-CM-Analysis: v=2.1 cv=PKg2p5aC c=1 sm=1 tr=0 a=uEuDQZVrWKuLCe7byFjfVg==:117 a=uEuDQZVrWKuLCe7byFjfVg==:17 a=LcaDllckn3IA:10 a=XFQ76FJkpKcA:10 a=7SFtLa4N3QQA:10 a=kj9zAlcOel0A:10 a=8X-mjxrNKSwA:10 a=iox4zFpeAAAA:8 a=yA65PWEwBQh2kNz8NkAA:9 a=sEpDHpY4bh EEKvBL:21 a=39FVaDiGOmgdG2KA:21 a=CjuIK1q_8ugA:10 a=n9GBPR9yFnkA:10 X-Sendmail-CT-Classification: not spam X-Sendmail-CT-RefID: str=0001.0A090207.52294BDE.00A4:SCFSTAT13898897, ss=1, re=-4.000, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0 Cc: mfasheh@suse.com Subject: [Ocfs2-devel] [PATCH 4/6] ocfs2_connection_private for holding DLM this_node information X-BeenThere: ocfs2-devel@oss.oracle.com X-Mailman-Version: 2.1.9 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: ocfs2-devel-bounces@oss.oracle.com Errors-To: ocfs2-devel-bounces@oss.oracle.com X-Source-IP: acsinet21.oracle.com [141.146.126.237] X-Spam-Status: No, score=-6.6 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Signed-off-by: Goldwyn Rodrigues --- fs/ocfs2/dlmglue.c | 2 +- fs/ocfs2/stack_o2cb.c | 3 ++- fs/ocfs2/stack_user.c | 51 +++++++++++++++++++++++++++++++++++++++++++++------ fs/ocfs2/stackglue.c | 4 ++-- fs/ocfs2/stackglue.h | 4 ++-- 5 files changed, 52 insertions(+), 12 deletions(-) diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c index 7c57de3..f2d48c8 100644 --- a/fs/ocfs2/dlmglue.c +++ b/fs/ocfs2/dlmglue.c @@ -3007,7 +3007,7 @@ int ocfs2_dlm_init(struct ocfs2_super *osb) goto bail; } - status = ocfs2_cluster_this_node(&osb->node_num); + status = ocfs2_cluster_this_node(conn, &osb->node_num); if (status < 0) { mlog_errno(status); mlog(ML_ERROR, diff --git a/fs/ocfs2/stack_o2cb.c b/fs/ocfs2/stack_o2cb.c index bf1f893..1724d43 100644 --- a/fs/ocfs2/stack_o2cb.c +++ b/fs/ocfs2/stack_o2cb.c @@ -398,7 +398,8 @@ static int o2cb_cluster_disconnect(struct ocfs2_cluster_connection *conn) return 0; } -static int o2cb_cluster_this_node(unsigned int *node) +static int o2cb_cluster_this_node(struct ocfs2_cluster_connection *conn, + unsigned int *node) { int node_num; diff --git a/fs/ocfs2/stack_user.c b/fs/ocfs2/stack_user.c index d604a36..b869d4d6 100644 --- a/fs/ocfs2/stack_user.c +++ b/fs/ocfs2/stack_user.c @@ -23,6 +23,7 @@ #include #include #include +#include #include #include "stackglue.h" @@ -112,6 +113,12 @@ struct ocfs2_live_connection { struct ocfs2_cluster_connection *oc_conn; }; +struct ocfs2_connection_private { + atomic_t cp_this_node; + int cp_our_slot; + wait_queue_head_t cp_wait; +}; + struct ocfs2_control_private { struct list_head op_list; int op_state; @@ -805,12 +812,30 @@ static void user_recover_prep(void *arg) static void user_recover_slot(void *arg, struct dlm_slot *slot) { + struct ocfs2_cluster_connection *conn = + (struct ocfs2_cluster_connection *) arg; + printk(KERN_INFO "ocfs2: Node %d/%d down. Initiating recovery.\n", + slot->nodeid, slot->slot); + conn->cc_recovery_handler(slot->nodeid, conn->cc_recovery_data); } static void user_recover_done(void *arg, struct dlm_slot *slots, int num_slots, int our_slot, uint32_t generation) { + struct ocfs2_cluster_connection *conn = + (struct ocfs2_cluster_connection *)arg; + struct ocfs2_connection_private *priv = conn->cc_private; + int i; + + for (i = 0; i < num_slots; i++) + if (slots[i].slot == our_slot) { + atomic_set(&priv->cp_this_node, slots[i].nodeid); + break; + } + + priv->cp_our_slot = our_slot; + wake_up(&priv->cp_wait); } const struct dlm_lockspace_ops ocfs2_ls_ops = { @@ -823,9 +848,20 @@ static int user_cluster_connect(struct ocfs2_cluster_connection *conn) { dlm_lockspace_t *fsdlm; int rc = 0, ops_rv; + struct ocfs2_connection_private *priv; BUG_ON(conn == NULL); + priv = kzalloc(sizeof(struct ocfs2_connection_private), GFP_KERNEL); + if (!priv) { + rc = -ENOMEM; + goto out; + } + init_waitqueue_head(&priv->cp_wait); + atomic_set(&priv->cp_this_node, 0); + + conn->cc_private = priv; + rc = dlm_new_lockspace(conn->cc_name, conn->cc_cluster_name, DLM_LSFL_FS, DLM_LVB_LEN, &ocfs2_ls_ops, conn, &ops_rv, &fsdlm); @@ -839,6 +875,7 @@ static int user_cluster_connect(struct ocfs2_cluster_connection *conn) goto out; } + wait_event(priv->cp_wait, (atomic_read(&priv->cp_this_node) > 0)); conn->cc_lockspace = fsdlm; out: return rc; @@ -848,19 +885,21 @@ static int user_cluster_disconnect(struct ocfs2_cluster_connection *conn) { dlm_release_lockspace(conn->cc_lockspace, 2); conn->cc_lockspace = NULL; + kfree(conn->cc_private); conn->cc_private = NULL; return 0; } -static int user_cluster_this_node(unsigned int *this_node) +static int user_cluster_this_node(struct ocfs2_cluster_connection *conn, + unsigned int *this_node) { - int rc; + struct ocfs2_connection_private *priv = + (struct ocfs2_connection_private *)conn->cc_private; - rc = ocfs2_control_get_this_node(); - if (rc < 0) - return rc; + if (!priv) + return -EINVAL; + *this_node = atomic_read(&priv->cp_this_node); - *this_node = rc; return 0; } diff --git a/fs/ocfs2/stackglue.c b/fs/ocfs2/stackglue.c index 9acee13..4dd732b 100644 --- a/fs/ocfs2/stackglue.c +++ b/fs/ocfs2/stackglue.c @@ -465,9 +465,9 @@ void ocfs2_cluster_hangup(const char *group, int grouplen) } EXPORT_SYMBOL_GPL(ocfs2_cluster_hangup); -int ocfs2_cluster_this_node(unsigned int *node) +int ocfs2_cluster_this_node(struct ocfs2_cluster_connection *conn, unsigned int *node) { - return active_stack->sp_ops->this_node(node); + return active_stack->sp_ops->this_node(conn, node); } EXPORT_SYMBOL_GPL(ocfs2_cluster_this_node); diff --git a/fs/ocfs2/stackglue.h b/fs/ocfs2/stackglue.h index b46fd51..c953290 100644 --- a/fs/ocfs2/stackglue.h +++ b/fs/ocfs2/stackglue.h @@ -157,7 +157,7 @@ struct ocfs2_stack_operations { * ->this_node() returns the cluster's unique identifier for the * local node. */ - int (*this_node)(unsigned int *node); + int (*this_node)(struct ocfs2_cluster_connection *conn, unsigned int *node); /* * Call the underlying dlm lock function. The ->dlm_lock() @@ -267,7 +267,7 @@ int ocfs2_cluster_connect_agnostic(const char *group, int ocfs2_cluster_disconnect(struct ocfs2_cluster_connection *conn, int hangup_pending); void ocfs2_cluster_hangup(const char *group, int grouplen); -int ocfs2_cluster_this_node(unsigned int *node); +int ocfs2_cluster_this_node(struct ocfs2_cluster_connection *, unsigned int *node); struct ocfs2_lock_res; int ocfs2_dlm_lock(struct ocfs2_cluster_connection *conn,