btrfs: Add acl mount option.

Add acl mount option to enable acl with remount option.

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Reviewed-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Chris Mason <clm@fb.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 98a682340935..76eecd13db19 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -324,7 +324,7 @@ enum {
         Opt_check_integrity, Opt_check_integrity_including_extent_data,
         Opt_check_integrity_print_mask, Opt_fatal_errors, Opt_rescan_uuid_tree,
         Opt_commit_interval, Opt_barrier, Opt_nodefrag, Opt_nodiscard,
-        Opt_noenospc_debug, Opt_noflushoncommit,
+        Opt_noenospc_debug, Opt_noflushoncommit, Opt_acl,
         Opt_err,
 };
 
@@ -347,6 +347,7 @@ static match_table_t tokens = {
         {Opt_ssd, "ssd"},
         {Opt_ssd_spread, "ssd_spread"},
         {Opt_nossd, "nossd"},
+        {Opt_acl, "acl"},
         {Opt_noacl, "noacl"},
         {Opt_notreelog, "notreelog"},
         {Opt_flushoncommit, "flushoncommit"},
@@ -552,6 +553,9 @@ int btrfs_parse_options(struct btrfs_root *root, char *options)
                                 goto out;
                         }
                         break;
+                case Opt_acl:
+                        root->fs_info->sb->s_flags |= MS_POSIXACL;
+                        break;
                 case Opt_noacl:
                         root->fs_info->sb->s_flags &= ~MS_POSIXACL;
                         break;