Cregit: Linux 6.3: pgtable.c

Contributors: 5
Author	Tokens	Token Proportion	Commits	Commit Proportion
Linus Torvalds (pre-git)	51	53.68%	4	40.00%
Ralf Baechle	28	29.47%	3	30.00%
James Hogan	13	13.68%	1	10.00%
Alexey Dobriyan	2	2.11%	1	10.00%
Mike Rapoport	1	1.05%	1	10.00%
Total	95		10

/*
 * 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_TABLE_ORDER);
	if (ret) {
		init = pgd_offset(&init_mm, 0UL);
		pgd_init(ret);
		memcpy(ret + USER_PTRS_PER_PGD, init + USER_PTRS_PER_PGD,
		       (PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));
	}

	return ret;
}
EXPORT_SYMBOL_GPL(pgd_alloc);