Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 9dd2fcd3 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Trond Myklebust
Browse files

pnfs: add a common GETDEVICELIST implementation 



At a simple helper to issue a GETDEVICELIST operation and pre-load
the device id cache based on the result.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarTrond Myklebust <trond.myklebust@primarydata.com>
parent 661373b1

fs/nfs/pnfs.h

+2 −0
Original line number Diff line number Diff line
@@ -277,6 +277,8 @@ bool nfs4_put_deviceid_node(struct nfs4_deviceid_node *); 
void nfs4_mark_deviceid_unavailable(struct nfs4_deviceid_node *node);

bool nfs4_test_deviceid_unavailable(struct nfs4_deviceid_node *node);

void nfs4_deviceid_purge_client(const struct nfs_client *);

int nfs4_deviceid_getdevicelist(struct nfs_server *server,

		const struct nfs_fh *fh);



static inline struct pnfs_layout_segment *

pnfs_get_lseg(struct pnfs_layout_segment *lseg)

fs/nfs/pnfs_dev.c

+29 −0
Original line number Diff line number Diff line
@@ -359,3 +359,32 @@ nfs4_deviceid_mark_client_invalid(struct nfs_client *clp) 
	rcu_read_unlock();

}



int

nfs4_deviceid_getdevicelist(struct nfs_server *server,

		const struct nfs_fh *fh)

{

	struct pnfs_devicelist *dlist;

	struct nfs4_deviceid_node *d;

	int error = 0, i;



	dlist = kzalloc(sizeof(struct pnfs_devicelist), GFP_NOFS);

	if (!dlist)

		return -ENOMEM;



	while (!dlist->eof) {

		error = nfs4_proc_getdevicelist(server, fh, dlist);

		if (error)

			break;



		for (i = 0; i < dlist->num_devs; i++) {

			d = nfs4_find_get_deviceid(server, &dlist->dev_id[i],

					NULL, GFP_NOFS);

			if (d)

				nfs4_put_deviceid_node(d);

		}

	}



	kfree(dlist);

	return error;

}

EXPORT_SYMBOL_GPL(nfs4_deviceid_getdevicelist);