blob: 05560b042d822933de77210e7a804500b3338cdb [file] [log] [blame]
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
#include <linux/export.h>
#include <linux/mm.h>
#include <linux/string.h>
#include <asm/pgalloc.h>
pgd_t *pgd_alloc(struct mm_struct *mm)
pgd_t *ret, *init;
ret = (pgd_t *) __get_free_pages(GFP_KERNEL, PGD_ORDER);
if (ret) {
init = pgd_offset(&init_mm, 0UL);
pgd_init((unsigned long)ret);
memcpy(ret + USER_PTRS_PER_PGD, init + USER_PTRS_PER_PGD,
(PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));
return ret;