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NFS: set layout driver

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Put in the infrastructure that uses information returned from the
server at mount to select a layout driver module.

In this patch, a stub is used that always returns "no driver found".

Signed-off-by: Ricardo Labiaga <Ricardo.Labiaga@netapp.com>
Signed-off-by: Dean Hildebrand <dhildebz@umich.edu>
Signed-off-by: Marc Eshel <eshel@almaden.ibm.com>
Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Fred Isaman <iisaman@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Ricardo Labiaga
2010-10-20 00:17:58 -04:00
committed by Trond Myklebust
parent 504913fbc8
commit 85e174ba6b
6 changed files with 148 additions and 0 deletions
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5
fs/nfs/client.c
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@ -48,6 +48,7 @@
#include "iostat.h"
#include "internal.h"
#include "fscache.h"
#include "pnfs.h"
#define NFSDBG_FACILITY NFSDBG_CLIENT
@ -900,6 +901,8 @@ static void nfs_server_set_fsinfo(struct nfs_server *server, struct nfs_fsinfo *
if (server->wsize > NFS_MAX_FILE_IO_SIZE)
server->wsize = NFS_MAX_FILE_IO_SIZE;
server->wpages = (server->wsize + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
set_pnfs_layoutdriver(server, fsinfo->layouttype);
server->wtmult = nfs_block_bits(fsinfo->wtmult, NULL);
server->dtsize = nfs_block_size(fsinfo->dtpref, NULL);
@ -939,6 +942,7 @@ static int nfs_probe_fsinfo(struct nfs_server *server, struct nfs_fh *mntfh, str
}
fsinfo.fattr = fattr;
fsinfo.layouttype = 0;
error = clp->rpc_ops->fsinfo(server, mntfh, &fsinfo);
if (error < 0)
goto out_error;
@ -1021,6 +1025,7 @@ void nfs_free_server(struct nfs_server *server)
{
dprintk("--> nfs_free_server()\n");
unset_pnfs_layoutdriver(server);
spin_lock(&nfs_client_lock);
list_del(&server->client_link);
list_del(&server->master_link);