Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm:
  dlm: use more NOFS allocation
  dlm: connect to nodes earlier
  dlm: fix use count with multiple joins
  dlm: Make name input parameter of {,dlm_}new_lockspace() const

6 files changed, 46 insertions, 24 deletions

diff --git a/fs/dlm/dir.c b/fs/dlm/dir.c
index 858fba14aaa..c4dfa1dcc86 100644
--- a/fs/dlm/dir.c
+++ b/fs/dlm/dir.c
@@ -49,7 +49,8 @@ static struct dlm_direntry *get_free_de(struct dlm_ls *ls, int len)
         spin_unlock(&ls->ls_recover_list_lock);
 
         if (!found)
-                de = kzalloc(sizeof(struct dlm_direntry) + len, GFP_KERNEL);
+                de = kzalloc(sizeof(struct dlm_direntry) + len,
+                             ls->ls_allocation);
         return de;
 }
 
@@ -211,7 +212,7 @@ int dlm_recover_directory(struct dlm_ls *ls)
 
         dlm_dir_clear(ls);
 
-        last_name = kmalloc(DLM_RESNAME_MAXLEN, GFP_KERNEL);
+        last_name = kmalloc(DLM_RESNAME_MAXLEN, ls->ls_allocation);
         if (!last_name)
                 goto out;
 
@@ -322,7 +323,7 @@ static int get_entry(struct dlm_ls *ls, int nodeid, char *name,
         if (namelen > DLM_RESNAME_MAXLEN)
                 return -EINVAL;
 
-        de = kzalloc(sizeof(struct dlm_direntry) + namelen, GFP_KERNEL);
+        de = kzalloc(sizeof(struct dlm_direntry) + namelen, ls->ls_allocation);
         if (!de)
                 return -ENOMEM;
 
diff --git a/fs/dlm/lockspace.c b/fs/dlm/lockspace.c
index cd8e2df3c29..d489fcc8671 100644
--- a/fs/dlm/lockspace.c
+++ b/fs/dlm/lockspace.c
@@ -384,7 +384,7 @@ static void threads_stop(void)
         dlm_astd_stop();
 }
 
-static int new_lockspace(char *name, int namelen, void **lockspace,
+static int new_lockspace(const char *name, int namelen, void **lockspace,
                          uint32_t flags, int lvblen)
 {
         struct dlm_ls *ls;
@@ -419,16 +419,14 @@ static int new_lockspace(char *name, int namelen, void **lockspace,
                         break;
                 }
                 ls->ls_create_count++;
-                module_put(THIS_MODULE);
-                error = 1; /* not an error, return 0 */
+                *lockspace = ls;
+                error = 1;
                 break;
         }
         spin_unlock(&lslist_lock);
 
-        if (error < 0)
-                goto out;
         if (error)
-                goto ret_zero;
+                goto out;
 
         error = -ENOMEM;
 
@@ -583,7 +581,6 @@ static int new_lockspace(char *name, int namelen, void **lockspace,
         dlm_create_debug_file(ls);
 
         log_debug(ls, "join complete");
- ret_zero:
         *lockspace = ls;
         return 0;
 
@@ -614,7 +611,7 @@ static int new_lockspace(char *name, int namelen, void **lockspace,
         return error;
 }
 
-int dlm_new_lockspace(char *name, int namelen, void **lockspace,
+int dlm_new_lockspace(const char *name, int namelen, void **lockspace,
                       uint32_t flags, int lvblen)
 {
         int error = 0;
@@ -628,7 +625,9 @@ int dlm_new_lockspace(char *name, int namelen, void **lockspace,
         error = new_lockspace(name, namelen, lockspace, flags, lvblen);
         if (!error)
                 ls_count++;
-        else if (!ls_count)
+        if (error > 0)
+                error = 0;
+        if (!ls_count)
                 threads_stop();
  out:
         mutex_unlock(&ls_lock);
diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c
index 609108a8326..cdb580a9c7a 100644
--- a/fs/dlm/lowcomms.c
+++ b/fs/dlm/lowcomms.c
@@ -309,6 +309,20 @@ static void lowcomms_state_change(struct sock *sk)
                 lowcomms_write_space(sk);
 }
 
+int dlm_lowcomms_connect_node(int nodeid)
+{
+        struct connection *con;
+
+        if (nodeid == dlm_our_nodeid())
+                return 0;
+
+        con = nodeid2con(nodeid, GFP_NOFS);
+        if (!con)
+                return -ENOMEM;
+        lowcomms_connect_sock(con);
+        return 0;
+}
+
 /* Make a socket active */
 static int add_sock(struct socket *sock, struct connection *con)
 {
@@ -486,7 +500,7 @@ static void process_sctp_notification(struct connection *con,
                                 return;
                         }
 
-                        new_con = nodeid2con(nodeid, GFP_KERNEL);
+                        new_con = nodeid2con(nodeid, GFP_NOFS);
                         if (!new_con)
                                 return;
 
@@ -722,7 +736,7 @@ static int tcp_accept_from_sock(struct connection *con)
          *  the same time and the connections cross on the wire.
          *  In this case we store the incoming one in "othercon"
          */
-        newcon = nodeid2con(nodeid, GFP_KERNEL);
+        newcon = nodeid2con(nodeid, GFP_NOFS);
         if (!newcon) {
                 result = -ENOMEM;
                 goto accept_err;
@@ -732,7 +746,7 @@ static int tcp_accept_from_sock(struct connection *con)
                 struct connection *othercon = newcon->othercon;
 
                 if (!othercon) {
-                        othercon = kmem_cache_zalloc(con_cache, GFP_KERNEL);
+                        othercon = kmem_cache_zalloc(con_cache, GFP_NOFS);
                         if (!othercon) {
                                 log_print("failed to allocate incoming socket");
                                 mutex_unlock(&newcon->sock_mutex);
@@ -1421,7 +1435,7 @@ static int work_start(void)
 static void stop_conn(struct connection *con)
 {
         con->flags |= 0x0F;
-        if (con->sock)
+        if (con->sock && con->sock->sk)
                 con->sock->sk->sk_user_data = NULL;
 }
 
diff --git a/fs/dlm/lowcomms.h b/fs/dlm/lowcomms.h
index a9a9618c0d3..1311e642628 100644
--- a/fs/dlm/lowcomms.h
+++ b/fs/dlm/lowcomms.h
@@ -2,7 +2,7 @@
 *******************************************************************************
 **
 **  Copyright (C) Sistina Software, Inc.  1997-2003  All rights reserved.
-**  Copyright (C) 2004-2005 Red Hat, Inc.  All rights reserved.
+**  Copyright (C) 2004-2009 Red Hat, Inc.  All rights reserved.
 **
 **  This copyrighted material is made available to anyone wishing to use,
 **  modify, copy, or redistribute it subject to the terms and conditions
@@ -19,6 +19,7 @@ void dlm_lowcomms_stop(void);
 int dlm_lowcomms_close(int nodeid);
 void *dlm_lowcomms_get_buffer(int nodeid, int len, gfp_t allocation, char **ppc);
 void dlm_lowcomms_commit_buffer(void *mh);
+int dlm_lowcomms_connect_node(int nodeid);
 
 #endif                          /* __LOWCOMMS_DOT_H__ */
 
diff --git a/fs/dlm/member.c b/fs/dlm/member.c
index 26133f05ae3..b128775913b 100644
--- a/fs/dlm/member.c
+++ b/fs/dlm/member.c
@@ -1,7 +1,7 @@
 /******************************************************************************
 *******************************************************************************
 **
-**  Copyright (C) 2005-2008 Red Hat, Inc.  All rights reserved.
+**  Copyright (C) 2005-2009 Red Hat, Inc.  All rights reserved.
 **
 **  This copyrighted material is made available to anyone wishing to use,
 **  modify, copy, or redistribute it subject to the terms and conditions
@@ -17,6 +17,7 @@
 #include "recover.h"
 #include "rcom.h"
 #include "config.h"
+#include "lowcomms.h"
 
 static void add_ordered_member(struct dlm_ls *ls, struct dlm_member *new)
 {
@@ -45,9 +46,9 @@ static void add_ordered_member(struct dlm_ls *ls, struct dlm_member *new)
 static int dlm_add_member(struct dlm_ls *ls, int nodeid)
 {
         struct dlm_member *memb;
-        int w;
+        int w, error;
 
-        memb = kzalloc(sizeof(struct dlm_member), GFP_KERNEL);
+        memb = kzalloc(sizeof(struct dlm_member), ls->ls_allocation);
         if (!memb)
                 return -ENOMEM;
 
@@ -57,6 +58,12 @@ static int dlm_add_member(struct dlm_ls *ls, int nodeid)
                 return w;
         }
 
+        error = dlm_lowcomms_connect_node(nodeid);
+        if (error < 0) {
+                kfree(memb);
+                return error;
+        }
+
         memb->nodeid = nodeid;
         memb->weight = w;
         add_ordered_member(ls, memb);
@@ -136,7 +143,7 @@ static void make_member_array(struct dlm_ls *ls)
 
         ls->ls_total_weight = total;
 
-        array = kmalloc(sizeof(int) * total, GFP_KERNEL);
+        array = kmalloc(sizeof(int) * total, ls->ls_allocation);
         if (!array)
                 return;
 
@@ -219,7 +226,7 @@ int dlm_recover_members(struct dlm_ls *ls, struct dlm_recover *rv, int *neg_out)
                         continue;
                 log_debug(ls, "new nodeid %d is a re-added member", rv->new[i]);
 
-                memb = kzalloc(sizeof(struct dlm_member), GFP_KERNEL);
+                memb = kzalloc(sizeof(struct dlm_member), ls->ls_allocation);
                 if (!memb)
                         return -ENOMEM;
                 memb->nodeid = rv->new[i];
@@ -334,7 +341,7 @@ int dlm_ls_start(struct dlm_ls *ls)
         int *ids = NULL, *new = NULL;
         int error, ids_count = 0, new_count = 0;
 
-        rv = kzalloc(sizeof(struct dlm_recover), GFP_KERNEL);
+        rv = kzalloc(sizeof(struct dlm_recover), ls->ls_allocation);
         if (!rv)
                 return -ENOMEM;
 
diff --git a/fs/dlm/requestqueue.c b/fs/dlm/requestqueue.c
index daa4183fbb8..7a2307c0891 100644
--- a/fs/dlm/requestqueue.c
+++ b/fs/dlm/requestqueue.c
@@ -35,7 +35,7 @@ void dlm_add_requestqueue(struct dlm_ls *ls, int nodeid, struct dlm_message *ms)
         struct rq_entry *e;
         int length = ms->m_header.h_length - sizeof(struct dlm_message);
 
-        e = kmalloc(sizeof(struct rq_entry) + length, GFP_KERNEL);
+        e = kmalloc(sizeof(struct rq_entry) + length, ls->ls_allocation);
         if (!e) {
                 log_print("dlm_add_requestqueue: out of memory len %d", length);
                 return;