Re: [PATCH v2 6/6] NFSv4.1/pNFS: Don't return NFS4ERR_DELAY unnecessarily in CB_LAYOUTRECALL

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Tue, Dec 29, 2015 at 2:05 AM, Trond Myklebust
<trond.myklebust@xxxxxxxxxxxxxxx> wrote:
> If the client is promising to return the layout ASAP, then there is no
> need to return DELAY and have the server retry. Instead default to the
> normal procedure described in RFC5661.
>
> Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
> ---
>  fs/nfs/callback_proc.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/fs/nfs/callback_proc.c b/fs/nfs/callback_proc.c
> index 1b24ad07d4f5..724a9b756ab0 100644
> --- a/fs/nfs/callback_proc.c
> +++ b/fs/nfs/callback_proc.c
> @@ -214,7 +214,7 @@ static u32 initiate_file_draining(struct nfs_client *clp,
>                 pnfs_mark_matching_lsegs_return(lo,
>                                 &free_me_list,
>                                 &args->cbl_range);
> -               rv = NFS4ERR_DELAY;
> +               rv = NFS4_OK;
It is possible that we've cleared all outstanding layout segments of
the file and returns NFS4_OK to CB_LAYOUTRECALL. Then server would be
expecting LAYOUTRETURN while client will not send one. IMO we'd better
re-check list_empty(&lo->plh_segs) to decide what to return here.

Cheers,
Tao
--
To unsubscribe from this list: send the line "unsubscribe linux-nfs" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Linux Filesystem Development]     [Linux USB Development]     [Linux Media Development]     [Video for Linux]     [Linux NILFS]     [Linux Audio Users]     [Yosemite Info]     [Linux SCSI]

  Powered by Linux