Re: [PATCH] Btrfs: balance delayed inode updates

[Josef Bacik <jbacik@fb.com>]

On 02/06/2014 04:07 PM, Josef Bacik wrote:
> While trying to reproduce a delayed ref problem I noticed the box kept falling
> over using all 80gb of my ram with btrfs_inode's and btrfs_delayed_node's.
> Turns out this is because we only throttle delayed inode updates in
> btrfs_dirty_inode, which doesn't actually get called that often, especially when
> all you are doing is creating a bunch of files.  So balance delayed inode
> updates everytime we create a new inode.  With this patch we no longer use up
> all of our ram with delayed inode updates.  Thanks,
>
> Signed-off-by: Josef Bacik <jbacik@fb.com>
> ---
>   fs/btrfs/extent-tree.c | 1 +
>   fs/btrfs/inode.c       | 4 ++++
>   2 files changed, 5 insertions(+)
>
> diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
> index 9c9ecc9..1d9d9ce 100644
> --- a/fs/btrfs/extent-tree.c
> +++ b/fs/btrfs/extent-tree.c
> @@ -2660,6 +2660,7 @@ int btrfs_should_throttle_delayed_refs(struct btrfs_trans_handle *trans,
>   		atomic_read(&trans->transaction->delayed_refs.num_entries);
>   	u64 avg_runtime;
>
> +	return 1;
>   	smp_mb();

Do git add for the file I want, do git commit -a anyway.

Josef