Re: [PATCH] Btrfs: fix wrong calculation of the available space when reserving the space

[Miao Xie <miaox@cn.fujitsu.com>]

Please ignore this patch, it is not based on the new btrfs-next tree.
I'll send the right one as soon as possible.

Thanks
Miao

On thu, 27 Sep 2012 17:09:15 +0800, Miao Xie wrote:
> According to the comment, we can overcommit the space up to 1/2 of the total
> disk space, or we just can overcommit up to 1/8. But the code was written
> reversedly. Fix it.
> 
> Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
> ---
> This is based on btrfs-next tree.
> ---
>  fs/btrfs/extent-tree.c |    4 ++--
>  1 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
> index a010234..8a01087 100644
> --- a/fs/btrfs/extent-tree.c
> +++ b/fs/btrfs/extent-tree.c
> @@ -3962,9 +3962,9 @@ again:
>  		 * 1/2 of the space.
>  		 */
>  		if (flush)
> -			avail >>= 3;
> -		else
>  			avail >>= 1;
> +		else
> +			avail >>= 3;
>  		 spin_unlock(&root->fs_info->free_chunk_lock);
>  
>  		if (used + num_bytes < space_info->total_bytes + avail) {
>