Hi Trond,
This feature is enabled for Flexfiles layout type. Is there a reason
that it shouldn't be generic for all pnfs?
On Wed, May 30, 2018 at 2:05 PM, Trond Myklebust <trondmy@xxxxxxxxx> wrote:
> From: Fred Isaman <fred.isaman@xxxxxxxxx>
>
> Driver can set flag to allow LAYOUTGET to be sent with OPEN.
>
> Signed-off-by: Fred Isaman <fred.isaman@xxxxxxxxx>
> Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
> ---
> fs/nfs/flexfilelayout/flexfilelayout.c | 1 +
> fs/nfs/pnfs.h | 1 +
> 2 files changed, 2 insertions(+)
>
> diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout/flexfilelayout.c
> index c75ad982bcfc..3ae038d9c292 100644
> --- a/fs/nfs/flexfilelayout/flexfilelayout.c
> +++ b/fs/nfs/flexfilelayout/flexfilelayout.c
> @@ -2347,6 +2347,7 @@ static struct pnfs_layoutdriver_type flexfilelayout_type = {
> .id = LAYOUT_FLEX_FILES,
> .name = "LAYOUT_FLEX_FILES",
> .owner = THIS_MODULE,
> + .flags = PNFS_LAYOUTGET_ON_OPEN,
> .set_layoutdriver = ff_layout_set_layoutdriver,
> .alloc_layout_hdr = ff_layout_alloc_layout_hdr,
> .free_layout_hdr = ff_layout_free_layout_hdr,
> diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h
> index daf6cbf5c15f..f71a55f11b97 100644
> --- a/fs/nfs/pnfs.h
> +++ b/fs/nfs/pnfs.h
> @@ -110,6 +110,7 @@ enum layoutdriver_policy_flags {
> PNFS_LAYOUTRET_ON_SETATTR = 1 << 0,
> PNFS_LAYOUTRET_ON_ERROR = 1 << 1,
> PNFS_READ_WHOLE_PAGE = 1 << 2,
> + PNFS_LAYOUTGET_ON_OPEN = 1 << 3,
> };
>
> struct nfs4_deviceid_node;
> --
> 2.17.0
>
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