Re: [PATCH] xfs: correct calculation for blockcount

[Shiyang Ruan <ruansy.fnst@fujitsu.com>]

Ping~

在 2023/8/28 15:24, Shiyang Ruan 写道:
> The blockcount, which means length, should be "end + 1 - start".  So,
> add the missing "+1" here.
> 
> Fixes: 5cf32f63b0f4 ("xfs: fix the calculation for "end" and "length"")
> Signed-off-by: Shiyang Ruan <ruansy.fnst@fujitsu.com>
> ---
>   fs/xfs/xfs_notify_failure.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/fs/xfs/xfs_notify_failure.c b/fs/xfs/xfs_notify_failure.c
> index 4a9bbd3fe120..459fc8a39635 100644
> --- a/fs/xfs/xfs_notify_failure.c
> +++ b/fs/xfs/xfs_notify_failure.c
> @@ -151,7 +151,7 @@ xfs_dax_notify_ddev_failure(
>   		agend = min(be32_to_cpu(agf->agf_length),
>   				ri_high.rm_startblock);
>   		notify.startblock = ri_low.rm_startblock;
> -		notify.blockcount = agend - ri_low.rm_startblock;
> +		notify.blockcount = agend + 1 - ri_low.rm_startblock;
>   
>   		error = xfs_rmap_query_range(cur, &ri_low, &ri_high,
>   				xfs_dax_failure_fn, &notify);