9p: re-enable mount time debug option

During reorganization, the mount time debug option was removed in favor
of module-load-time parameters.  However, the mount time option is still
a useful for feature during debug and for user-fault isolation when the
module is compiled into the kernel.

Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>

diff --git a/fs/9p/v9fs.c b/fs/9p/v9fs.c
index 4feb5ae..45c3598 100644 (file)
--- a/fs/9p/v9fs.c
+++ b/fs/9p/v9fs.c
@@ -43,7 +43,7 @@
 
 enum {
        /* Options that take integer arguments */
-       Opt_port, Opt_msize, Opt_uid, Opt_gid, Opt_afid,
+       Opt_debug, Opt_port, Opt_msize, Opt_uid, Opt_gid, Opt_afid,
        Opt_rfdno, Opt_wfdno,
        /* String options */
        Opt_uname, Opt_remotename,
@@ -56,6 +56,7 @@ enum {
 };
 
 static match_table_t tokens = {
+       {Opt_debug, "debug=%x"},
        {Opt_port, "port=%u"},
        {Opt_msize, "msize=%u"},
        {Opt_uid, "uid=%u"},
@@ -128,6 +129,10 @@ static void v9fs_parse_options(char *options, struct v9fs_session_info *v9ses)
                        }
                }
                switch (token) {
+               case Opt_debug:
+                       v9ses->debug = option;
+                       p9_debug_level = option;
+                       break;
                case Opt_port:
                        v9ses->port = option;
                        break;

diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c
index f6a0519..ba90437 100644 (file)
--- a/fs/9p/vfs_super.c
+++ b/fs/9p/vfs_super.c
@@ -217,7 +217,7 @@ static int v9fs_show_options(struct seq_file *m, struct vfsmount *mnt)
        struct v9fs_session_info *v9ses = mnt->mnt_sb->s_fs_info;
 
        if (v9ses->debug != 0)
-               seq_printf(m, ",debug=%u", v9ses->debug);
+               seq_printf(m, ",debug=%x", v9ses->debug);
        if (v9ses->port != V9FS_PORT)
                seq_printf(m, ",port=%u", v9ses->port);
        if (v9ses->maxdata != 9000)