Add treelog mount option to enable tree log with
remount option.
Signed-off-by: Qu Wenruo <quwen...@cn.fujitsu.com>
Reviewed-by: David Sterba <dste...@suse.cz>
---
Changelog:
v2: Add treelog option
v3: None
---
Documentation/filesystems/btrfs.txt | 3 ++-
fs/btrfs/super.c | 8 +++++++-
2 files changed, 9 insertions(+), 2 deletions(-)
diff --git a/Documentation/filesystems/btrfs.txt
b/Documentation/filesystems/btrfs.txt
index e05c6ae..d11cc2f 100644
--- a/Documentation/filesystems/btrfs.txt
+++ b/Documentation/filesystems/btrfs.txt
@@ -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.
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index fa74252..d353b9e 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -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);
--
1.8.5.2
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