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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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53 lines
1.5 KiB
C
53 lines
1.5 KiB
C
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/* NFS filesystem cache interface
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*
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* Copyright (C) 2008 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public Licence
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* as published by the Free Software Foundation; either version
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* 2 of the Licence, or (at your option) any later version.
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*/
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/mm.h>
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#include <linux/nfs_fs.h>
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#include <linux/nfs_fs_sb.h>
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#include <linux/in6.h>
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#include <linux/seq_file.h>
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#include "internal.h"
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#include "fscache.h"
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#define NFSDBG_FACILITY NFSDBG_FSCACHE
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/*
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* Get the per-client index cookie for an NFS client if the appropriate mount
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* flag was set
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* - We always try and get an index cookie for the client, but get filehandle
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* cookies on a per-superblock basis, depending on the mount flags
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*/
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void nfs_fscache_get_client_cookie(struct nfs_client *clp)
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{
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/* create a cache index for looking up filehandles */
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clp->fscache = fscache_acquire_cookie(nfs_fscache_netfs.primary_index,
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&nfs_fscache_server_index_def,
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clp);
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dfprintk(FSCACHE, "NFS: get client cookie (0x%p/0x%p)\n",
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clp, clp->fscache);
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}
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/*
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* Dispose of a per-client cookie
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*/
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void nfs_fscache_release_client_cookie(struct nfs_client *clp)
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{
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dfprintk(FSCACHE, "NFS: releasing client cookie (0x%p/0x%p)\n",
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clp, clp->fscache);
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fscache_relinquish_cookie(clp->fscache, 0);
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clp->fscache = NULL;
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}
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