diff options
| author | Qu Wenruo <quwenruo@cn.fujitsu.com> | 2014-01-06 09:58:29 +0800 |
|---|---|---|
| committer | Chris Mason <clm@fb.com> | 2014-01-28 13:20:18 -0800 |
| commit | 2c9ee85671f66cd3ffc7067de47cc59ed6677299 (patch) | |
| tree | 38fbbdeeab9950c89d37e52eca4715949040efa6 | |
| parent | 530362934332e4efac81d40583aa1225e64f556f (diff) | |
btrfs: Add noflushoncommit mount option.
Add noflushoncommit mount option to disable flush on commit 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>
| -rw-r--r-- | Documentation/filesystems/btrfs.txt | 1 | ||||
| -rw-r--r-- | fs/btrfs/super.c | 8 |
2 files changed, 8 insertions, 1 deletions
diff --git a/Documentation/filesystems/btrfs.txt b/Documentation/filesystems/btrfs.txt index 13a7cac80430..303b49c6c296 100644 --- a/Documentation/filesystems/btrfs.txt +++ b/Documentation/filesystems/btrfs.txt @@ -117,6 +117,7 @@ Options with (*) are default options and will not show in the mount options. "bug" - BUG() on a fatal error. This is the default. "panic" - panic() on a fatal error. + noflushoncommit(*) flushoncommit The 'flushoncommit' mount option forces any data dirtied by a write in a prior transaction to commit as part of the current commit. This makes diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 832540645c20..98a682340935 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_noenospc_debug, Opt_noflushoncommit, Opt_err, }; @@ -350,6 +350,7 @@ static match_table_t tokens = { {Opt_noacl, "noacl"}, {Opt_notreelog, "notreelog"}, {Opt_flushoncommit, "flushoncommit"}, + {Opt_noflushoncommit, "noflushoncommit"}, {Opt_ratio, "metadata_ratio=%d"}, {Opt_discard, "discard"}, {Opt_nodiscard, "nodiscard"}, @@ -562,6 +563,11 @@ int btrfs_parse_options(struct btrfs_root *root, char *options) btrfs_info(root->fs_info, "turning on flush-on-commit"); btrfs_set_opt(info->mount_opt, FLUSHONCOMMIT); break; + case Opt_noflushoncommit: + if (btrfs_test_opt(root, FLUSHONCOMMIT)) + btrfs_info(root->fs_info, "turning off flush-on-commit"); + btrfs_clear_opt(info->mount_opt, FLUSHONCOMMIT); + break; case Opt_ratio: ret = match_int(&args[0], &intarg); if (ret) { |