mirror of
https://git.proxmox.com/git/mirror_zfs.git
synced 2024-11-18 10:21:01 +03:00
c6ee83893e
Commit dcdc12e added compatibility code to treat NR_SLAB_RECLAIMABLE_B
as if it were the same as NR_SLAB_RECLAIMABLE. However, the new value
is in bytes while the old value was in pages which means they are not
interchangeable.
The only place the reclaimable slab size is used is as a component of
the calculation done by arc_free_memory(). This function returns the
amount of memory the ARC considers to be free or reclaimable at little
cost. Rather than switch to a new interface to get this value it has
been removed it from the calculation. It is normally a minor component
compared to the number of inactive or free pages, and removing it
aligns the behavior with the FreeBSD version of arc_free_memory().
Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: Coleman Kane <ckane@colemankane.org>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #10834
93 lines
2.4 KiB
C
93 lines
2.4 KiB
C
/*
|
|
* Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
|
|
* Copyright (C) 2007 The Regents of the University of California.
|
|
* Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
|
|
* Written by Brian Behlendorf <behlendorf1@llnl.gov>.
|
|
* UCRL-CODE-235197
|
|
*
|
|
* This file is part of the SPL, Solaris Porting Layer.
|
|
* For details, see <http://zfsonlinux.org/>.
|
|
*
|
|
* The SPL is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the
|
|
* Free Software Foundation; either version 2 of the License, or (at your
|
|
* option) any later version.
|
|
*
|
|
* The SPL is distributed in the hope that it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
* for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with the SPL. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef _SPL_VMSYSTM_H
|
|
#define _SPL_VMSYSTM_H
|
|
|
|
#include <linux/mmzone.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/swap.h>
|
|
#include <linux/highmem.h>
|
|
#include <linux/vmalloc.h>
|
|
#include <sys/types.h>
|
|
#include <asm/uaccess.h>
|
|
|
|
#ifdef HAVE_TOTALRAM_PAGES_FUNC
|
|
#define zfs_totalram_pages totalram_pages()
|
|
#else
|
|
#define zfs_totalram_pages totalram_pages
|
|
#endif
|
|
|
|
#ifdef HAVE_TOTALHIGH_PAGES
|
|
#define zfs_totalhigh_pages totalhigh_pages()
|
|
#else
|
|
#define zfs_totalhigh_pages totalhigh_pages
|
|
#endif
|
|
|
|
#define membar_producer() smp_wmb()
|
|
#define physmem zfs_totalram_pages
|
|
|
|
#define xcopyin(from, to, size) copy_from_user(to, from, size)
|
|
#define xcopyout(from, to, size) copy_to_user(to, from, size)
|
|
|
|
static __inline__ int
|
|
copyin(const void *from, void *to, size_t len)
|
|
{
|
|
/* On error copyin routine returns -1 */
|
|
if (xcopyin(from, to, len))
|
|
return (-1);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static __inline__ int
|
|
copyout(const void *from, void *to, size_t len)
|
|
{
|
|
/* On error copyout routine returns -1 */
|
|
if (xcopyout(from, to, len))
|
|
return (-1);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static __inline__ int
|
|
copyinstr(const void *from, void *to, size_t len, size_t *done)
|
|
{
|
|
size_t rc;
|
|
|
|
if (len == 0)
|
|
return (-ENAMETOOLONG);
|
|
|
|
/* XXX: Should return ENAMETOOLONG if 'strlen(from) > len' */
|
|
|
|
memset(to, 0, len);
|
|
rc = copyin(from, to, len - 1);
|
|
if (done != NULL)
|
|
*done = rc;
|
|
|
|
return (0);
|
|
}
|
|
|
|
#endif /* SPL_VMSYSTM_H */
|