Revision ed48e1f812b585e2af5dee6e08712c64d75978e2 authored by Mike Rapoport on 05 December 2019, 00:54:03 UTC, committed by Linus Torvalds on 05 December 2019, 03:44:15 UTC
microblaze has only two-level page tables and can use pgtable-nopmd and folding of the upper layers. Replace usage of include/asm-generic/4level-fixup.h and explicit definition of __PAGETABLE_PMD_FOLDED in microblaze with include/asm-generic/pgtable-nopmd.h and adjust page table manipulation macros and functions accordingly. Link: http://lkml.kernel.org/r/1572938135-31886-7-git-send-email-rppt@kernel.org Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Cc: Anatoly Pugachev <matorola@gmail.com> Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: "David S. Miller" <davem@davemloft.net> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Greentime Hu <green.hu@gmail.com> Cc: Greg Ungerer <gerg@linux-m68k.org> Cc: Helge Deller <deller@gmx.de> Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com> Cc: Jeff Dike <jdike@addtoit.com> Cc: "Kirill A. Shutemov" <kirill@shutemov.name> Cc: Mark Salter <msalter@redhat.com> Cc: Matt Turner <mattst88@gmail.com> Cc: Michal Simek <monstr@monstr.eu> Cc: Peter Rosin <peda@axentia.se> Cc: Richard Weinberger <richard@nod.at> Cc: Rolf Eike Beer <eike-kernel@sf-tec.de> Cc: Russell King <linux@armlinux.org.uk> Cc: Russell King <rmk+kernel@armlinux.org.uk> Cc: Sam Creasey <sammy@sammy.net> Cc: Vincent Chen <deanbo422@gmail.com> Cc: Vineet Gupta <Vineet.Gupta1@synopsys.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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nfs4renewd.c
/*
* fs/nfs/nfs4renewd.c
*
* Copyright (c) 2002 The Regents of the University of Michigan.
* All rights reserved.
*
* Kendrick Smith <kmsmith@umich.edu>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Implementation of the NFSv4 "renew daemon", which wakes up periodically to
* send a RENEW, to keep state alive on the server. The daemon is implemented
* as an rpc_task, not a real kernel thread, so it always runs in rpciod's
* context. There is one renewd per nfs_server.
*
*/
#include <linux/mm.h>
#include <linux/pagemap.h>
#include <linux/sunrpc/sched.h>
#include <linux/sunrpc/clnt.h>
#include <linux/nfs.h>
#include <linux/nfs4.h>
#include <linux/nfs_fs.h>
#include "nfs4_fs.h"
#include "delegation.h"
#define NFSDBG_FACILITY NFSDBG_STATE
void
nfs4_renew_state(struct work_struct *work)
{
const struct nfs4_state_maintenance_ops *ops;
struct nfs_client *clp =
container_of(work, struct nfs_client, cl_renewd.work);
const struct cred *cred;
long lease;
unsigned long last, now;
unsigned renew_flags = 0;
ops = clp->cl_mvops->state_renewal_ops;
dprintk("%s: start\n", __func__);
if (test_bit(NFS_CS_STOP_RENEW, &clp->cl_res_state))
goto out;
lease = clp->cl_lease_time;
last = clp->cl_last_renewal;
now = jiffies;
/* Are we close to a lease timeout? */
if (time_after(now, last + lease/3))
renew_flags |= NFS4_RENEW_TIMEOUT;
if (nfs_delegations_present(clp))
renew_flags |= NFS4_RENEW_DELEGATION_CB;
if (renew_flags != 0) {
cred = ops->get_state_renewal_cred(clp);
if (cred == NULL) {
if (!(renew_flags & NFS4_RENEW_DELEGATION_CB)) {
set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
goto out;
}
nfs_expire_all_delegations(clp);
} else {
int ret;
/* Queue an asynchronous RENEW. */
ret = ops->sched_state_renewal(clp, cred, renew_flags);
put_cred(cred);
switch (ret) {
default:
goto out_exp;
case -EAGAIN:
case -ENOMEM:
break;
}
}
} else {
dprintk("%s: failed to call renewd. Reason: lease not expired \n",
__func__);
}
nfs4_schedule_state_renewal(clp);
out_exp:
nfs_expire_unreferenced_delegations(clp);
out:
dprintk("%s: done\n", __func__);
}
void
nfs4_schedule_state_renewal(struct nfs_client *clp)
{
long timeout;
spin_lock(&clp->cl_lock);
timeout = (2 * clp->cl_lease_time) / 3 + (long)clp->cl_last_renewal
- (long)jiffies;
if (timeout < 5 * HZ)
timeout = 5 * HZ;
dprintk("%s: requeueing work. Lease period = %ld\n",
__func__, (timeout + HZ - 1) / HZ);
mod_delayed_work(system_wq, &clp->cl_renewd, timeout);
set_bit(NFS_CS_RENEWD, &clp->cl_res_state);
spin_unlock(&clp->cl_lock);
}
void
nfs4_kill_renewd(struct nfs_client *clp)
{
cancel_delayed_work_sync(&clp->cl_renewd);
}
/**
* nfs4_set_lease_period - Sets the lease period on a nfs_client
*
* @clp: pointer to nfs_client
* @lease: new value for lease period
* @lastrenewed: time at which lease was last renewed
*/
void nfs4_set_lease_period(struct nfs_client *clp,
unsigned long lease,
unsigned long lastrenewed)
{
spin_lock(&clp->cl_lock);
clp->cl_lease_time = lease;
clp->cl_last_renewal = lastrenewed;
spin_unlock(&clp->cl_lock);
/* Cap maximum reconnect timeout at 1/2 lease period */
rpc_set_connect_timeout(clp->cl_rpcclient, lease, lease >> 1);
}
/*
* Local variables:
* c-basic-offset: 8
* End:
*/
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