From: Chris Mason Date: Tue, 13 Oct 2009 16:55:09 +0000 (-0400) Subject: Btrfs: only write one super copy during fsync X-Git-Tag: firefly_0821_release~11933^2~18 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=4722607db6a78bd7748c51fa4c8d7371da797254;p=firefly-linux-kernel-4.4.55.git Btrfs: only write one super copy during fsync During a tree-log commit for fsync, we've been writing at least two copies of the super block and forcing them to disk. The other filesystems write only one, and this change brings us on par with them. A full transaction commit will write all the super copies, so we still have redundant info written on a regular basis. Signed-off-by: Chris Mason --- diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c index 78f6254ac2d9..6d9ec285644d 100644 --- a/fs/btrfs/tree-log.c +++ b/fs/btrfs/tree-log.c @@ -2092,7 +2092,7 @@ int btrfs_sync_log(struct btrfs_trans_handle *trans, * the running transaction open, so a full commit can't hop * in and cause problems either. */ - write_ctree_super(trans, root->fs_info->tree_root, 2); + write_ctree_super(trans, root->fs_info->tree_root, 1); ret = 0; out_wake_log_root: