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btrfs: Add treelog mount option.

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Add treelog mount option to enable tree log 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>
This commit is contained in:
Qu Wenruo 2014-01-06 09:58:33 +08:00 committed by Chris Mason
parent d399167d88
commit a88998f291
2 changed files with 9 additions and 2 deletions
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3
Documentation/filesystems/btrfs.txt
View File

@ -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.

8
fs/btrfs/super.c
View File

@ -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);