nilfs2: Using nobarrier option instead of barrier=off

Since most of fs using nofoobar style option,
modified barrier=off option as nobarrier.

Signed-off-by: Jiro SEKIBA <jir@unicus.jp>
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>

diff --git a/Documentation/filesystems/nilfs2.txt b/Documentation/filesystems/nilfs2.txt
index 01539f4..cbd8779 100644 (file)
--- a/Documentation/filesystems/nilfs2.txt
+++ b/Documentation/filesystems/nilfs2.txt
@@ -49,8 +49,7 @@ Mount options
 NILFS2 supports the following mount options:
 (*) == default
 
-barrier=on(*)          This enables/disables barriers. barrier=off disables
-                       it, barrier=on enables it.
+nobarrier              Disables barriers.
 errors=continue(*)     Keep going on a filesystem error.
 errors=remount-ro      Remount the filesystem read-only on an error.
 errors=panic           Panic and halt the machine if an error occurs.

diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c
index 644e667..02dcbb0 100644 (file)
--- a/fs/nilfs2/super.c
+++ b/fs/nilfs2/super.c
@@ -490,7 +490,7 @@ static int nilfs_show_options(struct seq_file *seq, struct vfsmount *vfs)
        struct nilfs_sb_info *sbi = NILFS_SB(sb);
 
        if (!nilfs_test_opt(sbi, BARRIER))
-               seq_printf(seq, ",barrier=off");
+               seq_printf(seq, ",nobarrier");
        if (nilfs_test_opt(sbi, SNAPSHOT))
                seq_printf(seq, ",cp=%llu",
                           (unsigned long long int)sbi->s_snapshot_cno);
@@ -568,7 +568,7 @@ static const struct export_operations nilfs_export_ops = {
 
 enum {
        Opt_err_cont, Opt_err_panic, Opt_err_ro,
-       Opt_barrier, Opt_snapshot, Opt_order,
+       Opt_nobarrier, Opt_snapshot, Opt_order,
        Opt_err,
 };
 
@@ -576,7 +576,7 @@ static match_table_t tokens = {
        {Opt_err_cont, "errors=continue"},
        {Opt_err_panic, "errors=panic"},
        {Opt_err_ro, "errors=remount-ro"},
-       {Opt_barrier, "barrier=%s"},
+       {Opt_nobarrier, "nobarrier"},
        {Opt_snapshot, "cp=%u"},
        {Opt_order, "order=%s"},
        {Opt_err, NULL}
@@ -612,13 +612,8 @@ static int parse_options(char *options, struct super_block *sb)
 
                token = match_token(p, tokens, args);
                switch (token) {
-               case Opt_barrier:
-                       if (match_bool(&args[0], &option))
-                               return 0;
-                       if (option)
-                               nilfs_set_opt(sbi, BARRIER);
-                       else
-                               nilfs_clear_opt(sbi, BARRIER);
+               case Opt_nobarrier:
+                       nilfs_clear_opt(sbi, BARRIER);
                        break;
                case Opt_order:
                        if (strcmp(args[0].from, "relaxed") == 0)