1 files changed, 42 insertions, 2 deletions

diff --git a/fs/hfsplus/options.c b/fs/hfsplus/options.c
index f9ab276a4d8d..bb62a5882147 100644
--- a/fs/hfsplus/options.c
+++ b/fs/hfsplus/options.c
@@ -23,6 +23,7 @@ enum {
         opt_umask, opt_uid, opt_gid,
         opt_part, opt_session, opt_nls,
         opt_nodecompose, opt_decompose,
+        opt_barrier, opt_nobarrier,
         opt_force, opt_err
 };
 
@@ -37,6 +38,8 @@ static const match_table_t tokens = {
         { opt_nls, "nls=%s" },
         { opt_decompose, "decompose" },
         { opt_nodecompose, "nodecompose" },
+        { opt_barrier, "barrier" },
+        { opt_nobarrier, "nobarrier" },
         { opt_force, "force" },
         { opt_err, NULL }
 };
@@ -65,6 +68,32 @@ static inline int match_fourchar(substring_t *arg, u32 *result)
         return 0;
 }
 
+int hfsplus_parse_options_remount(char *input, int *force)
+{
+        char *p;
+        substring_t args[MAX_OPT_ARGS];
+        int token;
+
+        if (!input)
+                return 0;
+
+        while ((p = strsep(&input, ",")) != NULL) {
+                if (!*p)
+                        continue;
+
+                token = match_token(p, tokens, args);
+                switch (token) {
+                case opt_force:
+                        *force = 1;
+                        break;
+                default:
+                        break;
+                }
+        }
+
+        return 1;
+}
+
 /* Parse options from mount. Returns 0 on failure */
 /* input is the options passed to mount() as a string */
 int hfsplus_parse_options(char *input, struct hfsplus_sb_info *sbi)
@@ -136,7 +165,9 @@ int hfsplus_parse_options(char *input, struct hfsplus_sb_info *sbi)
                         if (p)
                                 sbi->nls = load_nls(p);
                         if (!sbi->nls) {
-                                printk(KERN_ERR "hfs: unable to load nls mapping \"%s\"\n", p);
+                                printk(KERN_ERR "hfs: unable to load "
+                                                "nls mapping \"%s\"\n",
+                                        p);
                                 kfree(p);
                                 return 0;
                         }
@@ -148,6 +179,12 @@ int hfsplus_parse_options(char *input, struct hfsplus_sb_info *sbi)
                 case opt_nodecompose:
                         set_bit(HFSPLUS_SB_NODECOMPOSE, &sbi->flags);
                         break;
+                case opt_barrier:
+                        clear_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags);
+                        break;
+                case opt_nobarrier:
+                        set_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags);
+                        break;
                 case opt_force:
                         set_bit(HFSPLUS_SB_FORCE, &sbi->flags);
                         break;
@@ -177,7 +214,8 @@ int hfsplus_show_options(struct seq_file *seq, struct vfsmount *mnt)
                 seq_printf(seq, ",creator=%.4s", (char *)&sbi->creator);
         if (sbi->type != HFSPLUS_DEF_CR_TYPE)
                 seq_printf(seq, ",type=%.4s", (char *)&sbi->type);
-        seq_printf(seq, ",umask=%o,uid=%u,gid=%u", sbi->umask, sbi->uid, sbi->gid);
+        seq_printf(seq, ",umask=%o,uid=%u,gid=%u", sbi->umask,
+                sbi->uid, sbi->gid);
         if (sbi->part >= 0)
                 seq_printf(seq, ",part=%u", sbi->part);
         if (sbi->session >= 0)
@@ -186,5 +224,7 @@ int hfsplus_show_options(struct seq_file *seq, struct vfsmount *mnt)
                 seq_printf(seq, ",nls=%s", sbi->nls->charset);
         if (test_bit(HFSPLUS_SB_NODECOMPOSE, &sbi->flags))
                 seq_printf(seq, ",nodecompose");
+        if (test_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags))
+                seq_printf(seq, ",nobarrier");
         return 0;
 }