Commit 287bd3e9 authored by Trond Myklebust's avatar Trond Myklebust
Browse files

pNFS: Add a layoutreturn callback to performa layout-private setup 



Add a callback to allow the flexfiles layout driver to initialise the
layout private payload.

Signed-off-by: default avatarTrond Myklebust <trond.myklebust@primarydata.com>
parent 4d796d75

fs/nfs/pnfs.c

+13 −1
Original line number Diff line number Diff line
@@ -1072,6 +1072,7 @@ pnfs_send_layoutreturn(struct pnfs_layout_hdr *lo, const nfs4_stateid *stateid, 
		       enum pnfs_iomode iomode, bool sync)

{

	struct inode *ino = lo->plh_inode;

	struct pnfs_layoutdriver_type *ld = NFS_SERVER(ino)->pnfs_curr_ld;

	struct nfs4_layoutreturn *lrp;

	int status = 0;
@@ -1089,6 +1090,8 @@ pnfs_send_layoutreturn(struct pnfs_layout_hdr *lo, const nfs4_stateid *stateid, 
	lrp->args.ld_private = &lrp->ld_private;

	lrp->clp = NFS_SERVER(ino)->nfs_client;

	lrp->cred = lo->plh_lc_cred;

	if (ld->prepare_layoutreturn)

		ld->prepare_layoutreturn(&lrp->args);



	status = nfs4_proc_layoutreturn(lrp, sync);

out:
@@ -1310,9 +1313,15 @@ bool pnfs_roc(struct inode *ino, 
out_noroc:

	spin_unlock(&ino->i_lock);

	pnfs_layoutcommit_inode(ino, true);

	if (roc) {

		struct pnfs_layoutdriver_type *ld = NFS_SERVER(ino)->pnfs_curr_ld;

		if (ld->prepare_layoutreturn)

			ld->prepare_layoutreturn(args);

		return true;

	}

	if (layoutreturn)

		pnfs_send_layoutreturn(lo, &stateid, iomode, true);

	return roc;

	return false;

}



void pnfs_roc_release(struct nfs4_layoutreturn_args *args,
@@ -1322,6 +1331,7 @@ void pnfs_roc_release(struct nfs4_layoutreturn_args *args, 
	struct pnfs_layout_hdr *lo = args->layout;

	const nfs4_stateid *arg_stateid = NULL;

	const nfs4_stateid *res_stateid = NULL;

	struct nfs4_xdr_opaque_data *ld_private = args->ld_private;



	if (ret == 0) {

		arg_stateid = &args->stateid;
@@ -1330,6 +1340,8 @@ void pnfs_roc_release(struct nfs4_layoutreturn_args *args, 
	}

	pnfs_layoutreturn_free_lsegs(lo, arg_stateid, &args->range,

			res_stateid);

	if (ld_private && ld_private->ops && ld_private->ops->free)

		ld_private->ops->free(ld_private);

	pnfs_put_layout_hdr(lo);

	trace_nfs4_layoutreturn_on_close(args->inode, 0);

}

fs/nfs/pnfs.h

+1 −0
Original line number Diff line number Diff line
@@ -172,6 +172,7 @@ struct pnfs_layoutdriver_type { 
			(struct nfs_server *server, struct pnfs_device *pdev,

			gfp_t gfp_flags);



	int (*prepare_layoutreturn) (struct nfs4_layoutreturn_args *);

	void (*encode_layoutreturn) (struct xdr_stream *xdr,

				     const struct nfs4_layoutreturn_args *args);