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Commit 587f03de authored by Fred Isaman's avatar Fred Isaman Committed by Trond Myklebust
Browse files

pnfs: refactor send_layoutget 



Pull out the alloc/init part for eventual reuse by OPEN.

Signed-off-by: default avatarFred Isaman <fred.isaman@gmail.com>
Signed-off-by: default avatarTrond Myklebust <trond.myklebust@hammerspace.com>
parent f86c3ac5

fs/nfs/pnfs.c

+15 −18
Original line number Diff line number Diff line
@@ -915,18 +915,12 @@ pnfs_layoutgets_blocked(const struct pnfs_layout_hdr *lo) 
		test_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags);

}



/*

 * Get layout from server.

 *    for now, assume that whole file layouts are requested.

 *    arg->offset: 0

 *    arg->length: all ones

 */

static struct pnfs_layout_segment *

send_layoutget(struct pnfs_layout_hdr *lo,

static struct nfs4_layoutget *

pnfs_alloc_init_layoutget_args(struct pnfs_layout_hdr *lo,

	   struct nfs_open_context *ctx,

	   nfs4_stateid *stateid,

	   const struct pnfs_layout_range *range,

	   long *timeout, gfp_t gfp_flags)

	   gfp_t gfp_flags)

{

	struct inode *ino = lo->plh_inode;

	struct nfs_server *server = NFS_SERVER(ino);
@@ -935,14 +929,9 @@ send_layoutget(struct pnfs_layout_hdr *lo, 


	dprintk("--> %s\n", __func__);



	/*

	 * Synchronously retrieve layout information from server and

	 * store in lseg. If we race with a concurrent seqid morphing

	 * op, then re-send the LAYOUTGET.

	 */

	lgp = kzalloc(sizeof(*lgp), gfp_flags);

	if (lgp == NULL)

		return ERR_PTR(-ENOMEM);

		return NULL;



	i_size = i_size_read(ino);
@@ -963,8 +952,7 @@ send_layoutget(struct pnfs_layout_hdr *lo, 
	nfs4_stateid_copy(&lgp->args.stateid, stateid);

	lgp->gfp_flags = gfp_flags;

	lgp->cred = lo->plh_lc_cred;



	return nfs4_proc_layoutget(lgp, timeout, gfp_flags);

	return lgp;

}



static void pnfs_clear_layoutcommit(struct inode *inode,
@@ -1694,6 +1682,7 @@ pnfs_update_layout(struct inode *ino, 
	struct nfs_client *clp = server->nfs_client;

	struct pnfs_layout_hdr *lo = NULL;

	struct pnfs_layout_segment *lseg = NULL;

	struct nfs4_layoutget *lgp;

	nfs4_stateid stateid;

	long timeout = 0;

	unsigned long giveup = jiffies + (clp->cl_lease_time << 1);
@@ -1838,7 +1827,15 @@ pnfs_update_layout(struct inode *ino, 
	if (arg.length != NFS4_MAX_UINT64)

		arg.length = PAGE_ALIGN(arg.length);



	lseg = send_layoutget(lo, ctx, &stateid, &arg, &timeout, gfp_flags);

	lgp = pnfs_alloc_init_layoutget_args(lo, ctx, &stateid, &arg, gfp_flags);

	if (!lgp) {

		trace_pnfs_update_layout(ino, pos, count, iomode, lo, NULL,

					 PNFS_UPDATE_LAYOUT_NOMEM);

		atomic_dec(&lo->plh_outstanding);

		goto out_put_layout_hdr;

	}



	lseg = nfs4_proc_layoutget(lgp, &timeout, gfp_flags);

	trace_pnfs_update_layout(ino, pos, count, iomode, lo, lseg,

				 PNFS_UPDATE_LAYOUT_SEND_LAYOUTGET);

	atomic_dec(&lo->plh_outstanding);