[pnfs] [PATCH] delay asking for layout if no layout

[Benny Halevy]

ACK

Note to myself: closing the file clears this state.

On Tue, Sep 04 2007 at 19:23:54 +0300, Marc Eshel <eshel at almaden.ibm.com> wrote:
> From: Marc Eshel <eshel at almaden.ibm.com>
> 
> 
> ---
> 
>  fs/nfs/pnfs.c |    6 +++++-
>  1 files changed, 5 insertions(+), 1 deletions(-)
> 
> diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
> index feb3c80..80761b4 100644
> --- a/fs/nfs/pnfs.c
> +++ b/fs/nfs/pnfs.c
> @@ -502,11 +502,15 @@ virtual_update_layout(struct inode* ino,
>  			nfsi->pnfs_layout_suspend = get_seconds() + 1;
>  			dprintk("%s: layout_get suspended until %ld\n",
>  			        __FUNCTION__, nfsi->pnfs_layout_suspend);
> -			/* FALLTHROUGH */
> +			break;
>  		case -EINVAL:	/* NFS4ERR_INVAL, NFSERR_BADIOMODE, NFS4ERR_UNKNOWN_LAYOUTTYPE */
>  		case -ENOTSUPP:	/* NFS4ERR_LAYOUTUNAVAILABLE */
>  		case -ETOOSMALL:/* NFS4ERR_TOOSMALL */
>  		default:
> +			/* suspend layout get for ever for this file */
> +			nfsi->pnfs_layout_suspend = 0;
> +			dprintk("%s: no layout_get until %ld\n",
> +			        __FUNCTION__, nfsi->pnfs_layout_suspend);
>  			/* mark with NFS_INO_LAYOUT_FAILED */
>  			break;
>  		}
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