Gitweb:     
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=fb0466c3ae7f1c73f70072af8fd27ac166908a2f
Commit:     fb0466c3ae7f1c73f70072af8fd27ac166908a2f
Parent:     50fd8010673b770f6489c9ee96680c204aefa84a
Author:     Eric Van Hensbergen <[EMAIL PROTECTED](none)>
AuthorDate: Wed Oct 17 14:31:07 2007 -0500
Committer:  Eric Van Hensbergen <[EMAIL PROTECTED]>
CommitDate: Wed Oct 17 14:31:07 2007 -0500

    9p: fix bad kconfig cross-dependency
    
    This patch moves transport dynamic registration and matching to the net
    module to prevent a bad Kconfig dependency between the net and fs 9p 
modules.
    
    Signed-off-by: Eric Van Hensbergen <[EMAIL PROTECTED]>
---
 fs/9p/v9fs.c               |   47 +--------------------------------
 include/net/9p/transport.h |    2 +
 net/9p/client.c            |    1 +
 net/9p/mod.c               |   62 ++++++++++++++++++++++++++++++++++++++++++++
 net/9p/mux.c               |    1 +
 5 files changed, 67 insertions(+), 46 deletions(-)

diff --git a/fs/9p/v9fs.c b/fs/9p/v9fs.c
index 89ee0ba..873802d 100644
--- a/fs/9p/v9fs.c
+++ b/fs/9p/v9fs.c
@@ -37,47 +37,6 @@
 #include "v9fs_vfs.h"
 
 /*
- * Dynamic Transport Registration Routines
- *
- */
-
-static LIST_HEAD(v9fs_trans_list);
-static struct p9_trans_module *v9fs_default_trans;
-
-/**
- * v9fs_register_trans - register a new transport with 9p
- * @m - structure describing the transport module and entry points
- *
- */
-void v9fs_register_trans(struct p9_trans_module *m)
-{
-       list_add_tail(&m->list, &v9fs_trans_list);
-       if (m->def)
-               v9fs_default_trans = m;
-}
-EXPORT_SYMBOL(v9fs_register_trans);
-
-/**
- * v9fs_match_trans - match transport versus registered transports
- * @arg: string identifying transport
- *
- */
-static struct p9_trans_module *v9fs_match_trans(const substring_t *name)
-{
-       struct list_head *p;
-       struct p9_trans_module *t = NULL;
-
-       list_for_each(p, &v9fs_trans_list) {
-               t = list_entry(p, struct p9_trans_module, list);
-               if (strncmp(t->name, name->from, name->to-name->from) == 0) {
-                       P9_DPRINTK(P9_DEBUG_TRANS, "trans=%s\n", t->name);
-                       break;
-               }
-       }
-       return t;
-}
-
-/*
   * Option Parsing (code inspired by NFS code)
   *  NOTE: each transport will parse its own options
   */
@@ -135,7 +94,7 @@ static void v9fs_parse_options(struct v9fs_session_info 
*v9ses)
        v9ses->afid = ~0;
        v9ses->debug = 0;
        v9ses->cache = 0;
-       v9ses->trans = v9fs_default_trans;
+       v9ses->trans = v9fs_default_trans();
 
        if (!options)
                return;
@@ -245,10 +204,6 @@ struct p9_fid *v9fs_session_init(struct v9fs_session_info 
*v9ses,
        v9ses->options = kstrdup(data, GFP_KERNEL);
        v9fs_parse_options(v9ses);
 
-       if ((v9ses->trans == NULL) && !list_empty(&v9fs_trans_list))
-               v9ses->trans = list_first_entry(&v9fs_trans_list,
-                struct p9_trans_module, list);
-
        if (v9ses->trans == NULL) {
                retval = -EPROTONOSUPPORT;
                P9_DPRINTK(P9_DEBUG_ERROR,
diff --git a/include/net/9p/transport.h b/include/net/9p/transport.h
index 7c68b3e..9dd4a05 100644
--- a/include/net/9p/transport.h
+++ b/include/net/9p/transport.h
@@ -50,5 +50,7 @@ struct p9_trans_module {
 };
 
 void v9fs_register_trans(struct p9_trans_module *m);
+struct p9_trans_module *v9fs_match_trans(const substring_t *name);
+struct p9_trans_module *v9fs_default_trans(void);
 
 #endif /* NET_9P_TRANSPORT_H */
diff --git a/net/9p/client.c b/net/9p/client.c
index d83cc12..af91993 100644
--- a/net/9p/client.c
+++ b/net/9p/client.c
@@ -30,6 +30,7 @@
 #include <linux/sched.h>
 #include <linux/uaccess.h>
 #include <net/9p/9p.h>
+#include <linux/parser.h>
 #include <net/9p/transport.h>
 #include <net/9p/conn.h>
 #include <net/9p/client.h>
diff --git a/net/9p/mod.c b/net/9p/mod.c
index 4f9e1d2..b8ac063 100644
--- a/net/9p/mod.c
+++ b/net/9p/mod.c
@@ -27,6 +27,10 @@
 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <net/9p/9p.h>
+#include <linux/fs.h>
+#include <linux/parser.h>
+#include <net/9p/transport.h>
+#include <linux/list.h>
 
 #ifdef CONFIG_NET_9P_DEBUG
 unsigned int p9_debug_level = 0;       /* feature-rific global debug level  */
@@ -40,6 +44,64 @@ extern void p9_mux_global_exit(void);
 extern int p9_sysctl_register(void);
 extern void p9_sysctl_unregister(void);
 
+/*
+ * Dynamic Transport Registration Routines
+ *
+ */
+
+static LIST_HEAD(v9fs_trans_list);
+static struct p9_trans_module *v9fs_default_transport;
+
+/**
+ * v9fs_register_trans - register a new transport with 9p
+ * @m - structure describing the transport module and entry points
+ *
+ */
+void v9fs_register_trans(struct p9_trans_module *m)
+{
+       list_add_tail(&m->list, &v9fs_trans_list);
+       if (m->def)
+               v9fs_default_transport = m;
+}
+EXPORT_SYMBOL(v9fs_register_trans);
+
+/**
+ * v9fs_match_trans - match transport versus registered transports
+ * @arg: string identifying transport
+ *
+ */
+struct p9_trans_module *v9fs_match_trans(const substring_t *name)
+{
+       struct list_head *p;
+       struct p9_trans_module *t = NULL;
+
+       list_for_each(p, &v9fs_trans_list) {
+               t = list_entry(p, struct p9_trans_module, list);
+               if (strncmp(t->name, name->from, name->to-name->from) == 0)
+                       break;
+       }
+       return t;
+}
+EXPORT_SYMBOL(v9fs_match_trans);
+
+/**
+ * v9fs_default_trans - returns pointer to default transport
+ *
+ */
+
+struct p9_trans_module *v9fs_default_trans(void)
+{
+       if (v9fs_default_transport)
+               return v9fs_default_transport;
+       else if (!list_empty(&v9fs_trans_list))
+               return list_first_entry(&v9fs_trans_list,
+                                       struct p9_trans_module, list);
+       else
+               return NULL;
+}
+EXPORT_SYMBOL(v9fs_default_trans);
+
+
 /**
  * v9fs_init - Initialize module
  *
diff --git a/net/9p/mux.c b/net/9p/mux.c
index 934e2ea..f140147 100644
--- a/net/9p/mux.c
+++ b/net/9p/mux.c
@@ -31,6 +31,7 @@
 #include <linux/idr.h>
 #include <linux/mutex.h>
 #include <net/9p/9p.h>
+#include <linux/parser.h>
 #include <net/9p/transport.h>
 #include <net/9p/conn.h>
 
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