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Commit a88998f2 authored by Qu Wenruo's avatar Qu Wenruo Committed by Chris Mason
Browse files

btrfs: Add treelog mount option. 



Add treelog mount option to enable tree log with
remount option.

Signed-off-by: default avatarQu Wenruo <quwenruo@cn.fujitsu.com>
Reviewed-by: default avatarDavid Sterba <dsterba@suse.cz>
Signed-off-by: default avatarJosef Bacik <jbacik@fb.com>
Signed-off-by: default avatarChris Mason <clm@fb.com>
parent d399167d

Documentation/filesystems/btrfs.txt

+2 −1
Original line number Diff line number Diff line
@@ -164,8 +164,9 @@ Options with (*) are default options and will not show in the mount options. 
	Enable/disable data checksumming for newly created files.

	Datasum implies datacow.



  treelog(*)

  notreelog

	Disable the tree logging used for fsync and O_SYNC writes.

	Enable/disable the tree logging used for fsync and O_SYNC writes.



  recovery

	Enable autorecovery attempts if a bad tree root is found at mount time.

fs/btrfs/super.c

+7 −1
Original line number Diff line number Diff line
@@ -325,7 +325,7 @@ enum { 
	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_acl, Opt_datacow,

	Opt_datasum,

	Opt_datasum, Opt_treelog,

	Opt_err,

};
@@ -353,6 +353,7 @@ static match_table_t tokens = { 
	{Opt_acl, "acl"},

	{Opt_noacl, "noacl"},

	{Opt_notreelog, "notreelog"},

	{Opt_treelog, "treelog"},

	{Opt_flushoncommit, "flushoncommit"},

	{Opt_noflushoncommit, "noflushoncommit"},

	{Opt_ratio, "metadata_ratio=%d"},
@@ -579,6 +580,11 @@ int btrfs_parse_options(struct btrfs_root *root, char *options) 
			btrfs_info(root->fs_info, "disabling tree log");

			btrfs_set_opt(info->mount_opt, NOTREELOG);

			break;

		case Opt_treelog:

			if (btrfs_test_opt(root, NOTREELOG))

				btrfs_info(root->fs_info, "enabling tree log");

			btrfs_clear_opt(info->mount_opt, NOTREELOG);

			break;

		case Opt_flushoncommit:

			btrfs_info(root->fs_info, "turning on flush-on-commit");

			btrfs_set_opt(info->mount_opt, FLUSHONCOMMIT);