9P: introduction of a new cache=mmap model.

[karo-tx-linux.git] / fs / 9p / v9fs.c

diff --git a/fs/9p/v9fs.c b/fs/9p/v9fs.c
index 08f2e1e9a7e6a4b66d08ea92e5ddf834dcb9d4a4..14da82564f4eef3e271c2cf891582dac45190ece 100644 (file)
--- a/fs/9p/v9fs.c
+++ b/fs/9p/v9fs.c
@@ -56,7 +56,7 @@ enum {
        /* Options that take no arguments */
        Opt_nodevmap,
        /* Cache options */
-       Opt_cache_loose, Opt_fscache,
+       Opt_cache_loose, Opt_fscache, Opt_mmap,
        /* Access options */
        Opt_access, Opt_posixacl,
        /* Error token */
@@ -74,6 +74,7 @@ static const match_table_t tokens = {
        {Opt_cache, "cache=%s"},
        {Opt_cache_loose, "loose"},
        {Opt_fscache, "fscache"},
+       {Opt_mmap, "mmap"},
        {Opt_cachetag, "cachetag=%s"},
        {Opt_access, "access=%s"},
        {Opt_posixacl, "posixacl"},
@@ -91,6 +92,9 @@ static int get_cache_mode(char *s)
        } else if (!strcmp(s, "fscache")) {
                version = CACHE_FSCACHE;
                p9_debug(P9_DEBUG_9P, "Cache mode: fscache\n");
+       } else if (!strcmp(s, "mmap")) {
+               version = CACHE_MMAP;
+               p9_debug(P9_DEBUG_9P, "Cache mode: mmap\n");
        } else if (!strcmp(s, "none")) {
                version = CACHE_NONE;
                p9_debug(P9_DEBUG_9P, "Cache mode: none\n");
@@ -220,6 +224,9 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts)
                case Opt_fscache:
                        v9ses->cache = CACHE_FSCACHE;
                        break;
+               case Opt_mmap:
+                       v9ses->cache = CACHE_MMAP;
+                       break;
                case Opt_cachetag:
 #ifdef CONFIG_9P_FSCACHE
                        v9ses->cachetag = match_strdup(&args[0]);