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