Hi Trond,
On 11/03/2017 07:35 AM, Trond Myklebust wrote:
> If our layoutreturn on close operation returns an NFS4ERR_OLD_STATEID,
> then try to update the stateid and retry. We know that there should
> be no further LAYOUTGET requests being launched.
>
> Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
> ---
> fs/nfs/nfs4proc.c | 18 ++++++++++++++++--
> fs/nfs/pnfs.c | 18 ++++++++++++++++++
> fs/nfs/pnfs.h | 1 +
> 3 files changed, 35 insertions(+), 2 deletions(-)
>
> diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
> index fe4a855dc965..1bb0e405aa57 100644
> --- a/fs/nfs/nfs4proc.c
> +++ b/fs/nfs/nfs4proc.c
> @@ -3165,11 +3165,18 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
> calldata->arg.lr_args = NULL;
> calldata->res.lr_res = NULL;
> break;
> + case -NFS4ERR_OLD_STATEID:
> + if (nfs4_refresh_layout_stateid(&calldata->arg.lr_args->stateid,
> + calldata->inode)) {
This doesn't compile with CONFIG_NFS_V4_1=n. I get:
CC [M] fs/nfs/nfs4proc.o
fs/nfs/nfs4proc.c: In function 'nfs4_close_done':
fs/nfs/nfs4proc.c:3169:8: error: implicit declaration of function 'nfs4_refresh_layout_stateid'; did you mean 'nfs4_refresh_open_stateid'? [-Werror=implicit-function-declaration]
if (nfs4_refresh_layout_stateid(&calldata->arg.lr_args->stateid,
^~~~~~~~~~~~~~~~~~~~~~~~~~~
nfs4_refresh_open_stateid
Thanks,
Anna
> + calldata->res.lr_ret = 0;
> + rpc_restart_call_prepare(task);
> + return;
> + }
> + /* Fallthrough */
> case -NFS4ERR_ADMIN_REVOKED:
> case -NFS4ERR_DELEG_REVOKED:
> case -NFS4ERR_EXPIRED:
> case -NFS4ERR_BAD_STATEID:
> - case -NFS4ERR_OLD_STATEID:
> case -NFS4ERR_UNKNOWN_LAYOUTTYPE:
> case -NFS4ERR_WRONG_CRED:
> calldata->arg.lr_args = NULL;
> @@ -5787,11 +5794,18 @@ static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata)
> data->args.lr_args = NULL;
> data->res.lr_res = NULL;
> break;
> + case -NFS4ERR_OLD_STATEID:
> + if (nfs4_refresh_layout_stateid(&data->args.lr_args->stateid,
> + data->inode)) {
> + data->res.lr_ret = 0;
> + rpc_restart_call_prepare(task);
> + return;
> + }
> + /* Fallthrough */
> case -NFS4ERR_ADMIN_REVOKED:
> case -NFS4ERR_DELEG_REVOKED:
> case -NFS4ERR_EXPIRED:
> case -NFS4ERR_BAD_STATEID:
> - case -NFS4ERR_OLD_STATEID:
> case -NFS4ERR_UNKNOWN_LAYOUTTYPE:
> case -NFS4ERR_WRONG_CRED:
> data->args.lr_args = NULL;
> diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
> index 3bcd669a3152..5e4cd6a7af66 100644
> --- a/fs/nfs/pnfs.c
> +++ b/fs/nfs/pnfs.c
> @@ -355,6 +355,24 @@ pnfs_clear_lseg_state(struct pnfs_layout_segment *lseg,
> }
>
> /*
> + * Update the seqid of a layout stateid
> + */
> +bool nfs4_refresh_layout_stateid(nfs4_stateid *dst, struct inode *inode)
> +{
> + struct pnfs_layout_hdr *lo;
> + bool ret = false;
> +
> + spin_lock(&inode->i_lock);
> + lo = NFS_I(inode)->layout;
> + if (lo && nfs4_stateid_match_other(dst, &lo->plh_stateid)) {
> + dst->seqid = lo->plh_stateid.seqid;
> + ret = true;
> + }
> + spin_unlock(&inode->i_lock);
> + return ret;
> +}
> +
> +/*
> * Mark a pnfs_layout_hdr and all associated layout segments as invalid
> *
> * In order to continue using the pnfs_layout_hdr, a full recovery
> diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h
> index 87f144f14d1e..3a8e2fbf038a 100644
> --- a/fs/nfs/pnfs.h
> +++ b/fs/nfs/pnfs.h
> @@ -251,6 +251,7 @@ int pnfs_destroy_layouts_byfsid(struct nfs_client *clp,
> bool is_recall);
> int pnfs_destroy_layouts_byclid(struct nfs_client *clp,
> bool is_recall);
> +bool nfs4_refresh_layout_stateid(nfs4_stateid *dst, struct inode *inode);
> void pnfs_put_layout_hdr(struct pnfs_layout_hdr *lo);
> void pnfs_set_layout_stateid(struct pnfs_layout_hdr *lo,
> const nfs4_stateid *new,
>
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