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/*
* linux/mm/vmalloc.c
*
* Copyright (C) 1993 Linus Torvalds
* Support of BIGMEM added by Gerhard Wichert, Siemens AG, July 1999
* SMP-safe vmalloc/vfree/ioremap, Tigran Aivazian <tigran@veritas.com>, May 2000
* Copyright (c) 2001 Lineo Inc., David McCullough <davidm@lineo.com>
* Copyright (c) 2000-2001 D Jeff Dionne <jeff@uClinux.org>
*/
#include <linux/config.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <linux/spinlock.h>
#include <asm/uaccess.h>
#include <asm/pgalloc.h>
rwlock_t vmlist_lock = RW_LOCK_UNLOCKED;
struct vm_struct * vmlist;
void __vfree(void * addr, int free_area_pages)
{
kfree(addr);
}
void vfree(void * addr)
{
__vfree(addr,1);
}
void * __vmalloc (unsigned long size, int gfp_mask, pgprot_t prot)
{
/*
* kmalloc doesn't like __GFP_HIGHMEM for some reason
* I doubt we need it - DAVIDM
*/
return kmalloc(size, gfp_mask & ~__GFP_HIGHMEM);
}
long vread(char *buf, char *addr, unsigned long count)
{
memcpy(buf, addr, count);
return count;
}
long vwrite(char *buf, char *addr, unsigned long count)
{
/* Don't allow overflow */
if ((unsigned long) addr + count < count)
count = -(unsigned long) addr;
memcpy(addr, buf, count);
return(count);
}
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