Re: [PATCH 18/19] pnfs/blocklayout: return layouts on setattr

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On Thu, Aug 21, 2014 at 9:09 AM, Christoph Hellwig <hch@xxxxxx> wrote:
> This speads up truncate-heavy workloads like fsx by multiple orders of
> magnitude.
>
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>
> ---
>  fs/nfs/blocklayout/blocklayout.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/fs/nfs/blocklayout/blocklayout.c b/fs/nfs/blocklayout/blocklayout.c
> index a7524c4..d5a2b87 100644
> --- a/fs/nfs/blocklayout/blocklayout.c
> +++ b/fs/nfs/blocklayout/blocklayout.c
> @@ -799,7 +799,8 @@ static struct pnfs_layoutdriver_type blocklayout_type = {
>         .id                             = LAYOUT_BLOCK_VOLUME,
>         .name                           = "LAYOUT_BLOCK_VOLUME",
>         .owner                          = THIS_MODULE,
> -       .flags                          = PNFS_READ_WHOLE_PAGE,
> +       .flags                          = PNFS_LAYOUTRET_ON_SETATTR |
> +                                         PNFS_READ_WHOLE_PAGE,
>         .read_pagelist                  = bl_read_pagelist,
>         .write_pagelist                 = bl_write_pagelist,
>         .alloc_layout_hdr               = bl_alloc_layout_hdr,
> --


Holding this pending resolution of issues with "[PATCH 07/19] pnfs:
add flag to force read-modify-write in ->write_begin" on which there
is a dependency.

-- 
Trond Myklebust

Linux NFS client maintainer, PrimaryData

trond.myklebust@xxxxxxxxxxxxxxx
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