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-rw-r--r--fs/9p/mux.c54
1 files changed, 35 insertions, 19 deletions
diff --git a/fs/9p/mux.c b/fs/9p/mux.c
index ea1134eb47c8..3e5b124a7212 100644
--- a/fs/9p/mux.c
+++ b/fs/9p/mux.c
@@ -7,9 +7,8 @@
* Copyright (C) 2004-2005 by Latchesar Ionkov <lucho@ionkov.net>
*
* This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -31,6 +30,7 @@
#include <linux/poll.h>
#include <linux/kthread.h>
#include <linux/idr.h>
+#include <linux/mutex.h>
#include "debug.h"
#include "v9fs.h"
@@ -69,7 +69,7 @@ struct v9fs_mux_data {
int msize;
unsigned char *extended;
struct v9fs_transport *trans;
- struct v9fs_idpool tidpool;
+ struct v9fs_idpool tagpool;
int err;
wait_queue_head_t equeue;
struct list_head req_list;
@@ -110,7 +110,7 @@ static void v9fs_pollwait(struct file *filp, wait_queue_head_t * wait_address,
static u16 v9fs_mux_get_tag(struct v9fs_mux_data *);
static void v9fs_mux_put_tag(struct v9fs_mux_data *, u16);
-static DECLARE_MUTEX(v9fs_mux_task_lock);
+static DEFINE_MUTEX(v9fs_mux_task_lock);
static struct workqueue_struct *v9fs_mux_wq;
static int v9fs_mux_num;
@@ -142,7 +142,7 @@ void v9fs_mux_global_exit(void)
*
* The current implementation returns sqrt of the number of mounts.
*/
-inline int v9fs_mux_calc_poll_procs(int muxnum)
+static int v9fs_mux_calc_poll_procs(int muxnum)
{
int n;
@@ -166,7 +166,7 @@ static int v9fs_mux_poll_start(struct v9fs_mux_data *m)
dprintk(DEBUG_MUX, "mux %p muxnum %d procnum %d\n", m, v9fs_mux_num,
v9fs_mux_poll_task_num);
- up(&v9fs_mux_task_lock);
+ mutex_lock(&v9fs_mux_task_lock);
n = v9fs_mux_calc_poll_procs(v9fs_mux_num + 1);
if (n > v9fs_mux_poll_task_num) {
@@ -225,7 +225,7 @@ static int v9fs_mux_poll_start(struct v9fs_mux_data *m)
}
v9fs_mux_num++;
- down(&v9fs_mux_task_lock);
+ mutex_unlock(&v9fs_mux_task_lock);
return 0;
}
@@ -235,7 +235,7 @@ static void v9fs_mux_poll_stop(struct v9fs_mux_data *m)
int i;
struct v9fs_mux_poll_task *vpt;
- up(&v9fs_mux_task_lock);
+ mutex_lock(&v9fs_mux_task_lock);
vpt = m->poll_task;
list_del(&m->mux_list);
for(i = 0; i < ARRAY_SIZE(m->poll_waddr); i++) {
@@ -252,7 +252,7 @@ static void v9fs_mux_poll_stop(struct v9fs_mux_data *m)
v9fs_mux_poll_task_num--;
}
v9fs_mux_num--;
- down(&v9fs_mux_task_lock);
+ mutex_unlock(&v9fs_mux_task_lock);
}
/**
@@ -279,8 +279,8 @@ struct v9fs_mux_data *v9fs_mux_init(struct v9fs_transport *trans, int msize,
m->msize = msize;
m->extended = extended;
m->trans = trans;
- idr_init(&m->tidpool.pool);
- init_MUTEX(&m->tidpool.lock);
+ idr_init(&m->tagpool.pool);
+ init_MUTEX(&m->tagpool.lock);
m->err = 0;
init_waitqueue_head(&m->equeue);
INIT_LIST_HEAD(&m->req_list);
@@ -383,7 +383,7 @@ v9fs_pollwait(struct file *filp, wait_queue_head_t * wait_address,
/**
* v9fs_poll_mux - polls a mux and schedules read or write works if necessary
*/
-static inline void v9fs_poll_mux(struct v9fs_mux_data *m)
+static void v9fs_poll_mux(struct v9fs_mux_data *m)
{
int n;
@@ -634,6 +634,14 @@ static void v9fs_read_work(void *a)
goto error;
}
+ if ((v9fs_debug_level&DEBUG_FCALL) == DEBUG_FCALL) {
+ char buf[150];
+
+ v9fs_printfcall(buf, sizeof(buf), m->rcall,
+ *m->extended);
+ printk(KERN_NOTICE ">>> %p %s\n", m, buf);
+ }
+
rcall = m->rcall;
rbuf = m->rbuf;
if (m->rpos > n) {
@@ -739,6 +747,13 @@ static struct v9fs_req *v9fs_send_request(struct v9fs_mux_data *m,
v9fs_set_tag(tc, n);
+ if ((v9fs_debug_level&DEBUG_FCALL) == DEBUG_FCALL) {
+ char buf[150];
+
+ v9fs_printfcall(buf, sizeof(buf), tc, *m->extended);
+ printk(KERN_NOTICE "<<< %p %s\n", m, buf);
+ }
+
req->tag = n;
req->tcall = tc;
req->rcall = NULL;
@@ -761,9 +776,8 @@ static struct v9fs_req *v9fs_send_request(struct v9fs_mux_data *m,
return req;
}
-static inline void
-v9fs_mux_flush_cb(void *a, struct v9fs_fcall *tc, struct v9fs_fcall *rc,
- int err)
+static void v9fs_mux_flush_cb(void *a, struct v9fs_fcall *tc,
+ struct v9fs_fcall *rc, int err)
{
v9fs_mux_req_callback cb;
int tag;
@@ -901,6 +915,7 @@ v9fs_mux_rpc(struct v9fs_mux_data *m, struct v9fs_fcall *tc,
return err;
}
+#if 0
/**
* v9fs_mux_rpcnb - sends 9P request without waiting for response.
* @m: mux data
@@ -924,6 +939,7 @@ int v9fs_mux_rpcnb(struct v9fs_mux_data *m, struct v9fs_fcall *tc,
dprintk(DEBUG_MUX, "mux %p tc %p tag %d\n", m, tc, req->tag);
return 0;
}
+#endif /* 0 */
/**
* v9fs_mux_cancel - cancel all pending requests with error
@@ -963,7 +979,7 @@ static u16 v9fs_mux_get_tag(struct v9fs_mux_data *m)
{
int tag;
- tag = v9fs_get_idpool(&m->tidpool);
+ tag = v9fs_get_idpool(&m->tagpool);
if (tag < 0)
return V9FS_NOTAG;
else
@@ -972,6 +988,6 @@ static u16 v9fs_mux_get_tag(struct v9fs_mux_data *m)
static void v9fs_mux_put_tag(struct v9fs_mux_data *m, u16 tag)
{
- if (tag != V9FS_NOTAG && v9fs_check_idpool(tag, &m->tidpool))
- v9fs_put_idpool(tag, &m->tidpool);
+ if (tag != V9FS_NOTAG && v9fs_check_idpool(tag, &m->tagpool))
+ v9fs_put_idpool(tag, &m->tagpool);
}
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-07-09 14:25:58 +0200