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add mm argument to pte/pmd/pud/pgd_free

Browse Source 
(with Martin Schwidefsky <schwidefsky@de.ibm.com>)

The pgd/pud/pmd/pte page table allocation functions get a mm_struct pointer as
first argument.  The free functions do not get the mm_struct argument.  This
is 1) asymmetrical and 2) to do mm related page table allocations the mm
argument is needed on the free function as well.

[kamalesh@linux.vnet.ibm.com: i386 fix]
[akpm@linux-foundation.org: coding-syle fixes]
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Benjamin Herrenschmidt 2008-02-04 22:29:14 -08:00 committed by Linus Torvalds
parent 9f8f217253
commit 5e5419734c
43 changed files with 151 additions and 151 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm/kernel/smp.c
View File

@ -150,7 +150,7 @@ int __cpuinit __cpu_up(unsigned int cpu)
secondary_data.pgdir = 0;
*pmd_offset(pgd, PHYS_OFFSET) = __pmd(0);
pgd_free(pgd);
pgd_free(&init_mm, pgd);
if (ret) {
printk(KERN_CRIT "CPU%u: processor failed to boot\n", cpu);

2
arch/arm/mm/ioremap.c
View File

@ -162,7 +162,7 @@ static void unmap_area_sections(unsigned long virt, unsigned long size)
* Free the page table, if there was one.
*/
if ((pmd_val(pmd) & PMD_TYPE_MASK) == PMD_TYPE_TABLE)
pte_free_kernel(pmd_page_vaddr(pmd));
pte_free_kernel(&init_mm, pmd_page_vaddr(pmd));
}
addr += PGDIR_SIZE;

8
arch/arm/mm/pgd.c
View File

@ -65,14 +65,14 @@ pgd_t *get_pgd_slow(struct mm_struct *mm)
return new_pgd;
no_pte:
pmd_free(new_pmd);
pmd_free(mm, new_pmd);
no_pmd:
free_pages((unsigned long)new_pgd, 2);
no_pgd:
return NULL;
}
void free_pgd_slow(pgd_t *pgd)
void free_pgd_slow(struct mm_struct *mm, pgd_t *pgd)
{
pmd_t *pmd;
struct page *pte;
@ -94,8 +94,8 @@ void free_pgd_slow(pgd_t *pgd)
pmd_clear(pmd);
dec_zone_page_state(virt_to_page((unsigned long *)pgd), NR_PAGETABLE);
pte_lock_deinit(pte);
pte_free(pte);
pmd_free(pmd);
pte_free(mm, pte);
pmd_free(mm, pmd);
free:
free_pages((unsigned long) pgd, 2);
}

2
arch/frv/mm/pgalloc.c
View File

@ -140,7 +140,7 @@ pgd_t *pgd_alloc(struct mm_struct *mm)
return pgd;
}
void pgd_free(pgd_t *pgd)
void pgd_free(struct mm_struct *mm, pgd_t *pgd)
{
/* in the non-PAE case, clear_page_tables() clears user pgd entries */
quicklist_free(0, pgd_dtor, pgd);

6
arch/powerpc/mm/pgtable_32.c
View File

@ -86,7 +86,7 @@ pgd_t *pgd_alloc(struct mm_struct *mm)
return ret;
}
void pgd_free(pgd_t *pgd)
void pgd_free(struct mm_struct *mm, pgd_t *pgd)
{
free_pages((unsigned long)pgd, PGDIR_ORDER);
}
@ -123,7 +123,7 @@ struct page *pte_alloc_one(struct mm_struct *mm, unsigned long address)
return ptepage;
}
void pte_free_kernel(pte_t *pte)
void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
{
#ifdef CONFIG_SMP
hash_page_sync();
@ -131,7 +131,7 @@ void pte_free_kernel(pte_t *pte)
free_page((unsigned long)pte);
}
void pte_free(struct page *ptepage)
void pte_free(struct mm_struct *mm, struct page *ptepage)
{
#ifdef CONFIG_SMP
hash_page_sync();

6
arch/ppc/mm/pgtable.c
View File

@ -74,7 +74,7 @@ pgd_t *pgd_alloc(struct mm_struct *mm)
return ret;
}
void pgd_free(pgd_t *pgd)
void pgd_free(struct mm_struct *mm, pgd_t *pgd)
{
free_pages((unsigned long)pgd, PGDIR_ORDER);
}
@ -111,7 +111,7 @@ struct page *pte_alloc_one(struct mm_struct *mm, unsigned long address)
return ptepage;
}
void pte_free_kernel(pte_t *pte)
void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
{
#ifdef CONFIG_SMP
hash_page_sync();
@ -119,7 +119,7 @@ void pte_free_kernel(pte_t *pte)
free_page((unsigned long)pte);
}
void pte_free(struct page *ptepage)
void pte_free(struct mm_struct *mm, struct page *ptepage)
{
#ifdef CONFIG_SMP
hash_page_sync();

2
arch/um/kernel/mem.c
View File

@ -348,7 +348,7 @@ pgd_t *pgd_alloc(struct mm_struct *mm)
return pgd;
}
void pgd_free(pgd_t *pgd)
void pgd_free(struct mm_struct *mm, pgd_t *pgd)
{
free_page((unsigned long) pgd);
}

8
arch/um/kernel/skas/mmu.c
View File

@ -58,9 +58,9 @@ static int init_stub_pte(struct mm_struct *mm, unsigned long proc,
return 0;
out_pmd:
pud_free(pud);
pud_free(mm, pud);
out_pte:
pmd_free(pmd);
pmd_free(mm, pmd);
out:
return -ENOMEM;
}
@ -144,10 +144,10 @@ void destroy_context(struct mm_struct *mm)
if (!proc_mm || !ptrace_faultinfo) {
free_page(mmu->id.stack);
pte_lock_deinit(virt_to_page(mmu->last_page_table));
pte_free_kernel((pte_t *) mmu->last_page_table);
pte_free_kernel(mm, (pte_t *) mmu->last_page_table);
dec_zone_page_state(virt_to_page(mmu->last_page_table), NR_PAGETABLE);
#ifdef CONFIG_3_LEVEL_PGTABLES
pmd_free((pmd_t *) mmu->last_pmd);
pmd_free(mm, (pmd_t *) mmu->last_pmd);
#endif
}

12
arch/x86/mm/pgtable_32.c
View File

@ -272,7 +272,7 @@ static void pgd_dtor(void *pgd)
* preallocate which never got a corresponding vma will need to be
* freed manually.
*/
static void pgd_mop_up_pmds(pgd_t *pgdp)
static void pgd_mop_up_pmds(struct mm_struct *mm, pgd_t *pgdp)
{
int i;
@ -285,7 +285,7 @@ static void pgd_mop_up_pmds(pgd_t *pgdp)
pgdp[i] = native_make_pgd(0);
paravirt_release_pd(pgd_val(pgd) >> PAGE_SHIFT);
pmd_free(pmd);
pmd_free(mm, pmd);
}
}
}
@ -313,7 +313,7 @@ static int pgd_prepopulate_pmd(struct mm_struct *mm, pgd_t *pgd)
pmd_t *pmd = pmd_alloc_one(mm, addr);
if (!pmd) {
pgd_mop_up_pmds(pgd);
pgd_mop_up_pmds(mm, pgd);
return 0;
}
@ -333,7 +333,7 @@ static int pgd_prepopulate_pmd(struct mm_struct *mm, pgd_t *pgd)
return 1;
}
static void pgd_mop_up_pmds(pgd_t *pgd)
static void pgd_mop_up_pmds(struct mm_struct *mm, pgd_t *pgdp)
{
}
#endif /* CONFIG_X86_PAE */
@ -352,9 +352,9 @@ pgd_t *pgd_alloc(struct mm_struct *mm)
return pgd;
}
void pgd_free(pgd_t *pgd)
void pgd_free(struct mm_struct *mm, pgd_t *pgd)
{
pgd_mop_up_pmds(pgd);
pgd_mop_up_pmds(mm, pgd);
quicklist_free(0, pgd_dtor, pgd);
}

8
include/asm-alpha/pgalloc.h
View File

@ -31,7 +31,7 @@ pgd_populate(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd)
extern pgd_t *pgd_alloc(struct mm_struct *mm);
static inline void
pgd_free(pgd_t *pgd)
pgd_free(struct mm_struct *mm, pgd_t *pgd)
{
free_page((unsigned long)pgd);
}
@ -44,7 +44,7 @@ pmd_alloc_one(struct mm_struct *mm, unsigned long address)
}
static inline void
pmd_free(pmd_t *pmd)
pmd_free(struct mm_struct *mm, pmd_t *pmd)
{
free_page((unsigned long)pmd);
}
@ -52,7 +52,7 @@ pmd_free(pmd_t *pmd)
extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long addr);
static inline void
pte_free_kernel(pte_t *pte)
pte_free_kernel(struct mm_struct *mm, pte_t *pte)
{
free_page((unsigned long)pte);
}
@ -67,7 +67,7 @@ pte_alloc_one(struct mm_struct *mm, unsigned long addr)
}
static inline void
pte_free(struct page *page)
pte_free(struct mm_struct *mm, struct page *page)
{
__free_page(page);
}

4
include/asm-alpha/tlb.h
View File

@ -9,7 +9,7 @@
#include <asm-generic/tlb.h>
#define __pte_free_tlb(tlb,pte) pte_free(pte)
#define __pmd_free_tlb(tlb,pmd) pmd_free(pmd)
#define __pte_free_tlb(tlb, pte) pte_free((tlb)->mm, pte)
#define __pmd_free_tlb(tlb, pmd) pmd_free((tlb)->mm, pmd)
#endif

10
include/asm-arm/pgalloc.h
View File

@ -27,14 +27,14 @@
* Since we have only two-level page tables, these are trivial
*/
#define pmd_alloc_one(mm,addr) ({ BUG(); ((pmd_t *)2); })
#define pmd_free(pmd) do { } while (0)
#define pmd_free(mm, pmd) do { } while (0)
#define pgd_populate(mm,pmd,pte) BUG()
extern pgd_t *get_pgd_slow(struct mm_struct *mm);
extern void free_pgd_slow(pgd_t *pgd);
extern void free_pgd_slow(struct mm_struct *mm, pgd_t *pgd);
#define pgd_alloc(mm) get_pgd_slow(mm)
#define pgd_free(pgd) free_pgd_slow(pgd)
#define pgd_free(mm, pgd) free_pgd_slow(mm, pgd)
/*
* Allocate one PTE table.
@ -83,7 +83,7 @@ pte_alloc_one(struct mm_struct *mm, unsigned long addr)
/*
* Free one PTE table.
*/
static inline void pte_free_kernel(pte_t *pte)
static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
{
if (pte) {
pte -= PTRS_PER_PTE;
@ -91,7 +91,7 @@ static inline void pte_free_kernel(pte_t *pte)
}
}
static inline void pte_free(struct page *pte)
static inline void pte_free(struct mm_struct *mm, struct page *pte)
{
__free_page(pte);
}

4
include/asm-arm/tlb.h
View File

@ -85,8 +85,8 @@ tlb_end_vma(struct mmu_gather *tlb, struct vm_area_struct *vma)
}
#define tlb_remove_page(tlb,page) free_page_and_swap_cache(page)
#define pte_free_tlb(tlb,ptep) pte_free(ptep)
#define pmd_free_tlb(tlb,pmdp) pmd_free(pmdp)
#define pte_free_tlb(tlb, ptep) pte_free((tlb)->mm, ptep)
#define pmd_free_tlb(tlb, pmdp) pmd_free((tlb)->mm, pmdp)
#define tlb_migrate_finish(mm) do { } while (0)

6
include/asm-avr32/pgalloc.h
View File

@ -30,7 +30,7 @@ static __inline__ pgd_t *pgd_alloc(struct mm_struct *mm)
return kcalloc(USER_PTRS_PER_PGD, sizeof(pgd_t), GFP_KERNEL);
}
static inline void pgd_free(pgd_t *pgd)
static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
{
kfree(pgd);
}
@ -55,12 +55,12 @@ static inline struct page *pte_alloc_one(struct mm_struct *mm,
return pte;
}
static inline void pte_free_kernel(pte_t *pte)
static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
{
free_page((unsigned long)pte);
}
static inline void pte_free(struct page *pte)
static inline void pte_free(struct mm_struct *mm, struct page *pte)
{
__free_page(pte);
}

6
include/asm-cris/pgalloc.h
View File

@ -16,7 +16,7 @@ static inline pgd_t *pgd_alloc (struct mm_struct *mm)
return (pgd_t *)get_zeroed_page(GFP_KERNEL);
}
static inline void pgd_free (pgd_t *pgd)
static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
{
free_page((unsigned long)pgd);
}
@ -34,12 +34,12 @@ static inline struct page *pte_alloc_one(struct mm_struct *mm, unsigned long add
return pte;
}
static inline void pte_free_kernel(pte_t *pte)
static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
{
free_page((unsigned long)pte);
}
static inline void pte_free(struct page *pte)
static inline void pte_free(struct mm_struct *mm, struct page *pte)
{
__free_page(pte);
}

8
include/asm-frv/pgalloc.h
View File

@ -31,18 +31,18 @@ do { \
*/
extern pgd_t *pgd_alloc(struct mm_struct *);
extern void pgd_free(pgd_t *);
extern void pgd_free(struct mm_struct *mm, pgd_t *);
extern pte_t *pte_alloc_one_kernel(struct mm_struct *, unsigned long);
extern struct page *pte_alloc_one(struct mm_struct *, unsigned long);
static inline void pte_free_kernel(pte_t *pte)
static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
{
free_page((unsigned long)pte);
}
static inline void pte_free(struct page *pte)
static inline void pte_free(struct mm_struct *mm, struct page *pte)
{
__free_page(pte);
}
@ -55,7 +55,7 @@ static inline void pte_free(struct page *pte)
* (In the PAE case we free the pmds as part of the pgd.)
*/
#define pmd_alloc_one(mm, addr) ({ BUG(); ((pmd_t *) 2); })
#define pmd_free(x) do { } while (0)
#define pmd_free(mm, x) do { } while (0)
#define __pmd_free_tlb(tlb,x) do { } while (0)
#endif /* CONFIG_MMU */

2
include/asm-frv/pgtable.h
View File

@ -226,7 +226,7 @@ static inline pud_t *pud_offset(pgd_t *pgd, unsigned long address)
* inside the pgd, so has no extra memory associated with it.
*/
#define pud_alloc_one(mm, address) NULL
#define pud_free(x) do { } while (0)
#define pud_free(mm, x) do { } while (0)
#define __pud_free_tlb(tlb, x) do { } while (0)
/*

2
include/asm-generic/4level-fixup.h
View File

@ -28,7 +28,7 @@
#undef pud_free_tlb
#define pud_free_tlb(tlb, x) do { } while (0)
#define pud_free(x) do { } while (0)
#define pud_free(mm, x) do { } while (0)
#define __pud_free_tlb(tlb, x) do { } while (0)
#undef pud_addr_end

2
include/asm-generic/pgtable-nopmd.h
View File

@ -54,7 +54,7 @@ static inline pmd_t * pmd_offset(pud_t * pud, unsigned long address)
* inside the pud, so has no extra memory associated with it.
*/
#define pmd_alloc_one(mm, address) NULL
#define pmd_free(x) do { } while (0)
#define pmd_free(mm, x) do { } while (0)
#define __pmd_free_tlb(tlb, x) do { } while (0)
#undef pmd_addr_end

2
include/asm-generic/pgtable-nopud.h
View File

@ -51,7 +51,7 @@ static inline pud_t * pud_offset(pgd_t * pgd, unsigned long address)
* inside the pgd, so has no extra memory associated with it.
*/
#define pud_alloc_one(mm, address) NULL
#define pud_free(x) do { } while (0)
#define pud_free(mm, x) do { } while (0)
#define __pud_free_tlb(tlb, x) do { } while (0)
#undef pud_addr_end

16
include/asm-ia64/pgalloc.h
View File

@ -27,7 +27,7 @@ static inline pgd_t *pgd_alloc(struct mm_struct *mm)
return quicklist_alloc(0, GFP_KERNEL, NULL);
}
static inline void pgd_free(pgd_t * pgd)
static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
{
quicklist_free(0, NULL, pgd);
}
@ -44,11 +44,11 @@ static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
return quicklist_alloc(0, GFP_KERNEL, NULL);
}
static inline void pud_free(pud_t * pud)
static inline void pud_free(struct mm_struct *mm, pud_t *pud)
{
quicklist_free(0, NULL, pud);
}
#define __pud_free_tlb(tlb, pud) pud_free(pud)
#define __pud_free_tlb(tlb, pud) pud_free((tlb)->mm, pud)
#endif /* CONFIG_PGTABLE_4 */
static inline void
@ -62,12 +62,12 @@ static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
return quicklist_alloc(0, GFP_KERNEL, NULL);
}
static inline void pmd_free(pmd_t * pmd)
static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
{
quicklist_free(0, NULL, pmd);
}
#define __pmd_free_tlb(tlb, pmd) pmd_free(pmd)
#define __pmd_free_tlb(tlb, pmd) pmd_free((tlb)->mm, pmd)
static inline void
pmd_populate(struct mm_struct *mm, pmd_t * pmd_entry, struct page *pte)
@ -94,12 +94,12 @@ static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
return quicklist_alloc(0, GFP_KERNEL, NULL);
}
static inline void pte_free(struct page *pte)
static inline void pte_free(struct mm_struct *mm, struct page *pte)
{
quicklist_free_page(0, NULL, pte);
}
static inline void pte_free_kernel(pte_t * pte)
static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
{
quicklist_free(0, NULL, pte);
}
@ -109,6 +109,6 @@ static inline void check_pgt_cache(void)
quicklist_trim(0, NULL, 25, 16);
}
#define __pte_free_tlb(tlb, pte) pte_free(pte)
#define __pte_free_tlb(tlb, pte) pte_free((tlb)->mm, pte)
#endif /* _ASM_IA64_PGALLOC_H */

10
include/asm-m32r/pgalloc.h
View File

@ -24,7 +24,7 @@ static __inline__ pgd_t *pgd_alloc(struct mm_struct *mm)
return pgd;
}
static __inline__ void pgd_free(pgd_t *pgd)
static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
{
free_page((unsigned long)pgd);
}
@ -46,17 +46,17 @@ static __inline__ struct page *pte_alloc_one(struct mm_struct *mm,
return pte;
}
static __inline__ void pte_free_kernel(pte_t *pte)
static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
{
free_page((unsigned long)pte);
}
static __inline__ void pte_free(struct page *pte)
static inline void pte_free(struct mm_struct *mm, struct page *pte)
{
__free_page(pte);
}
#define __pte_free_tlb(tlb, pte) pte_free((pte))
#define __pte_free_tlb(tlb, pte) pte_free((tlb)->mm, (pte))
/*
* allocating and freeing a pmd is trivial: the 1-entry pmd is
@ -65,7 +65,7 @@ static __inline__ void pte_free(struct page *pte)
*/
#define pmd_alloc_one(mm, addr) ({ BUG(); ((pmd_t *)2); })
#define pmd_free(x) do { } while (0)
#define pmd_free(mm, x) do { } while (0)
#define __pmd_free_tlb(tlb, x) do { } while (0)
#define pgd_populate(mm, pmd, pte) BUG()

10
include/asm-m68k/motorola_pgalloc.h
View File

@ -22,7 +22,7 @@ static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long ad
return pte;
}
static inline void pte_free_kernel(pte_t *pte)
static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
{
cache_page(pte);
free_page((unsigned long) pte);
@ -47,7 +47,7 @@ static inline struct page *pte_alloc_one(struct mm_struct *mm, unsigned long add
return page;
}
static inline void pte_free(struct page *page)
static inline void pte_free(struct mm_struct *mm, struct page *page)
{
cache_page(kmap(page));
kunmap(page);
@ -67,7 +67,7 @@ static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
return get_pointer_table();
}
static inline int pmd_free(pmd_t *pmd)
static inline int pmd_free(struct mm_struct *mm, pmd_t *pmd)
{
return free_pointer_table(pmd);
}
@ -78,9 +78,9 @@ static inline int __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd)
}
static inline void pgd_free(pgd_t *pgd)
static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
{
pmd_free((pmd_t *)pgd);
pmd_free(mm, (pmd_t *)pgd);
}
static inline pgd_t *pgd_alloc(struct mm_struct *mm)

8
include/asm-m68k/sun3_pgalloc.h
View File

@ -21,12 +21,12 @@ extern const char bad_pmd_string[];
#define pmd_alloc_one(mm,address) ({ BUG(); ((pmd_t *)2); })
static inline void pte_free_kernel(pte_t * pte)
static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
{
free_page((unsigned long) pte);
}
static inline void pte_free(struct page *page)
static inline void pte_free(struct mm_struct *mm, struct page *page)
{
__free_page(page);
}
@ -72,10 +72,10 @@ static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, struct page *p
* allocating and freeing a pmd is trivial: the 1-entry pmd is
* inside the pgd, so has no extra memory associated with it.
*/
#define pmd_free(x) do { } while (0)
#define pmd_free(mm, x) do { } while (0)
#define __pmd_free_tlb(tlb, x) do { } while (0)
static inline void pgd_free(pgd_t * pgd)
static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
{
free_page((unsigned long) pgd);
}

12
include/asm-mips/pgalloc.h
View File

@ -58,7 +58,7 @@ static inline pgd_t *pgd_alloc(struct mm_struct *mm)
return ret;
}
static inline void pgd_free(pgd_t *pgd)
static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
{
free_pages((unsigned long)pgd, PGD_ORDER);
}
@ -85,12 +85,12 @@ static inline struct page *pte_alloc_one(struct mm_struct *mm,
return pte;
}
static inline void pte_free_kernel(pte_t *pte)
static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
{
free_pages((unsigned long)pte, PTE_ORDER);
}
static inline void pte_free(struct page *pte)
static inline void pte_free(struct mm_struct *mm, struct page *pte)
{
__free_pages(pte, PTE_ORDER);
}
@ -103,7 +103,7 @@ static inline void pte_free(struct page *pte)
* allocating and freeing a pmd is trivial: the 1-entry pmd is
* inside the pgd, so has no extra memory associated with it.
*/
#define pmd_free(x) do { } while (0)
#define pmd_free(mm, x) do { } while (0)
#define __pmd_free_tlb(tlb, x) do { } while (0)
#endif
@ -120,12 +120,12 @@ static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
return pmd;
}
static inline void pmd_free(pmd_t *pmd)
static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
{
free_pages((unsigned long)pmd, PMD_ORDER);
}
#define __pmd_free_tlb(tlb, x) pmd_free(x)
#define __pmd_free_tlb(tlb, x) pmd_free((tlb)->mm, x)
#endif

10
include/asm-parisc/pgalloc.h
View File

@ -43,7 +43,7 @@ static inline pgd_t *pgd_alloc(struct mm_struct *mm)
return actual_pgd;
}
static inline void pgd_free(pgd_t *pgd)
static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
{
#ifdef CONFIG_64BIT
pgd -= PTRS_PER_PGD;
@ -70,7 +70,7 @@ static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
return pmd;
}
static inline void pmd_free(pmd_t *pmd)
static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
{
#ifdef CONFIG_64BIT
if(pmd_flag(*pmd) & PxD_FLAG_ATTACHED)
@ -91,7 +91,7 @@ static inline void pmd_free(pmd_t *pmd)
*/
#define pmd_alloc_one(mm, addr) ({ BUG(); ((pmd_t *)2); })
#define pmd_free(x) do { } while (0)
#define pmd_free(mm, x) do { } while (0)
#define pgd_populate(mm, pmd, pte) BUG()
#endif
@ -130,12 +130,12 @@ pte_alloc_one_kernel(struct mm_struct *mm, unsigned long addr)
return pte;
}
static inline void pte_free_kernel(pte_t *pte)
static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
{
free_page((unsigned long)pte);
}
#define pte_free(page) pte_free_kernel(page_address(page))
#define pte_free(mm, page) pte_free_kernel(page_address(page))
#define check_pgt_cache() do { } while (0)

4
include/asm-parisc/tlb.h
View File

@ -21,7 +21,7 @@ do { if (!(tlb)->fullmm) \
#include <asm-generic/tlb.h>
#define __pmd_free_tlb(tlb, pmd) pmd_free(pmd)
#define __pte_free_tlb(tlb, pte) pte_free(pte)
#define __pmd_free_tlb(tlb, pmd) pmd_free((tlb)->mm, pmd)
#define __pte_free_tlb(tlb, pte) pte_free((tlb)->mm, pte)
#endif

10
include/asm-powerpc/pgalloc-32.h
View File

@ -6,14 +6,14 @@
extern void __bad_pte(pmd_t *pmd);
extern pgd_t *pgd_alloc(struct mm_struct *mm);
extern void pgd_free(pgd_t *pgd);
extern void pgd_free(struct mm_struct *mm, pgd_t *pgd);
/*
* We don't have any real pmd's, and this code never triggers because
* the pgd will always be present..
*/
/* #define pmd_alloc_one(mm,address) ({ BUG(); ((pmd_t *)2); }) */
#define pmd_free(x) do { } while (0)
#define pmd_free(mm, x) do { } while (0)
#define __pmd_free_tlb(tlb,x) do { } while (0)
/* #define pgd_populate(mm, pmd, pte) BUG() */
@ -31,10 +31,10 @@ extern void pgd_free(pgd_t *pgd);
extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long addr);
extern struct page *pte_alloc_one(struct mm_struct *mm, unsigned long addr);
extern void pte_free_kernel(pte_t *pte);
extern void pte_free(struct page *pte);
extern void pte_free_kernel(struct mm_struct *mm, pte_t *pte);
extern void pte_free(struct mm_struct *mm, struct page *pte);
#define __pte_free_tlb(tlb, pte) pte_free((pte))
#define __pte_free_tlb(tlb, pte) pte_free((tlb)->mm, (pte))
#define check_pgt_cache() do { } while (0)

10
include/asm-powerpc/pgalloc-64.h
View File

@ -29,7 +29,7 @@ static inline pgd_t *pgd_alloc(struct mm_struct *mm)
return kmem_cache_alloc(pgtable_cache[PGD_CACHE_NUM], GFP_KERNEL);
}
static inline void pgd_free(pgd_t *pgd)
static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
{
subpage_prot_free(pgd);
kmem_cache_free(pgtable_cache[PGD_CACHE_NUM], pgd);
@ -45,7 +45,7 @@ static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
GFP_KERNEL|__GFP_REPEAT);
}
static inline void pud_free(pud_t *pud)
static inline void pud_free(struct mm_struct *mm, pud_t *pud)
{
kmem_cache_free(pgtable_cache[PUD_CACHE_NUM], pud);
}
@ -81,7 +81,7 @@ static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
GFP_KERNEL|__GFP_REPEAT);
}
static inline void pmd_free(pmd_t *pmd)
static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
{
kmem_cache_free(pgtable_cache[PMD_CACHE_NUM], pmd);
}
@ -99,12 +99,12 @@ static inline struct page *pte_alloc_one(struct mm_struct *mm,
return pte ? virt_to_page(pte) : NULL;
}
static inline void pte_free_kernel(pte_t *pte)
static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
{
free_page((unsigned long)pte);
}
static inline void pte_free(struct page *ptepage)
static inline void pte_free(struct mm_struct *mm, struct page *ptepage)
{
__free_page(ptepage);
}

10
include/asm-ppc/pgalloc.h
View File

@ -7,14 +7,14 @@
extern void __bad_pte(pmd_t *pmd);
extern pgd_t *pgd_alloc(struct mm_struct *mm);
extern void pgd_free(pgd_t *pgd);
extern void pgd_free(struct mm_struct *mm, pgd_t *pgd);
/*
* We don't have any real pmd's, and this code never triggers because
* the pgd will always be present..
*/
#define pmd_alloc_one(mm,address) ({ BUG(); ((pmd_t *)2); })
#define pmd_free(x) do { } while (0)
#define pmd_free(mm, x) do { } while (0)
#define __pmd_free_tlb(tlb,x) do { } while (0)
#define pgd_populate(mm, pmd, pte) BUG()
@ -32,10 +32,10 @@ extern void pgd_free(pgd_t *pgd);
extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long addr);
extern struct page *pte_alloc_one(struct mm_struct *mm, unsigned long addr);
extern void pte_free_kernel(pte_t *pte);
extern void pte_free(struct page *pte);
extern void pte_free_kernel(struct mm_struct *mm, pte_t *pte);
extern void pte_free(struct mm_struct *mm, struct page *pte);
#define __pte_free_tlb(tlb, pte) pte_free((pte))
#define __pte_free_tlb(tlb, pte) pte_free((tlb)->mm, (pte))
#define check_pgt_cache() do { } while (0)

14
include/asm-s390/pgalloc.h
View File

@ -57,10 +57,10 @@ static inline unsigned long pgd_entry_type(struct mm_struct *mm)
}
#define pud_alloc_one(mm,address) ({ BUG(); ((pud_t *)2); })
#define pud_free(x) do { } while (0)
#define pud_free(mm, x) do { } while (0)
#define pmd_alloc_one(mm,address) ({ BUG(); ((pmd_t *)2); })
#define pmd_free(x) do { } while (0)
#define pmd_free(mm, x) do { } while (0)
#define pgd_populate(mm, pgd, pud) BUG()
#define pgd_populate_kernel(mm, pgd, pud) BUG()
@ -76,7 +76,7 @@ static inline unsigned long pgd_entry_type(struct mm_struct *mm)
}
#define pud_alloc_one(mm,address) ({ BUG(); ((pud_t *)2); })
#define pud_free(x) do { } while (0)
#define pud_free(mm, x) do { } while (0)
static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long vmaddr)
{
@ -85,7 +85,7 @@ static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long vmaddr)
crst_table_init(crst, _SEGMENT_ENTRY_EMPTY);
return (pmd_t *) crst;
}
#define pmd_free(pmd) crst_table_free((unsigned long *) pmd)
#define pmd_free(mm, pmd) crst_table_free((unsigned long *)pmd)
#define pgd_populate(mm, pgd, pud) BUG()
#define pgd_populate_kernel(mm, pgd, pud) BUG()
@ -115,7 +115,7 @@ static inline pgd_t *pgd_alloc(struct mm_struct *mm)
crst_table_init(crst, pgd_entry_type(mm));
return (pgd_t *) crst;
}
#define pgd_free(pgd) crst_table_free((unsigned long *) pgd)
#define pgd_free(mm, pgd) crst_table_free((unsigned long *) pgd)
static inline void
pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte)
@ -151,9 +151,9 @@ pmd_populate(struct mm_struct *mm, pmd_t *pmd, struct page *page)
#define pte_alloc_one(mm, vmaddr) \
virt_to_page(page_table_alloc(s390_noexec))
#define pte_free_kernel(pte) \
#define pte_free_kernel(mm, pte) \
page_table_free((unsigned long *) pte)
#define pte_free(pte) \
#define pte_free(mm, pte) \
page_table_free((unsigned long *) page_to_phys((struct page *) pte))
#endif /* _S390_PGALLOC_H */

8
include/asm-s390/tlb.h
View File

@ -65,9 +65,9 @@ static inline void tlb_flush_mmu(struct mmu_gather *tlb,
if (!tlb->fullmm && (tlb->nr_ptes > 0 || tlb->nr_pmds < TLB_NR_PTRS))
__tlb_flush_mm(tlb->mm);
while (tlb->nr_ptes > 0)
pte_free(tlb->array[--tlb->nr_ptes]);
pte_free(tlb->mm, tlb->array[--tlb->nr_ptes]);
while (tlb->nr_pmds < TLB_NR_PTRS)
pmd_free((pmd_t *) tlb->array[tlb->nr_pmds++]);
pmd_free(tlb->mm, (pmd_t *) tlb->array[tlb->nr_pmds++]);
}
static inline void tlb_finish_mmu(struct mmu_gather *tlb,
@ -102,7 +102,7 @@ static inline void pte_free_tlb(struct mmu_gather *tlb, struct page *page)
if (tlb->nr_ptes >= tlb->nr_pmds)
tlb_flush_mmu(tlb, 0, 0);
} else
pte_free(page);
pte_free(tlb->mm, page);
}
/*
@ -117,7 +117,7 @@ static inline void pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd)
if (tlb->nr_ptes >= tlb->nr_pmds)
tlb_flush_mmu(tlb, 0, 0);
} else
pmd_free(pmd);
pmd_free(tlb->mm, pmd);
#endif
}

8
include/asm-sh/pgalloc.h
View File

@ -36,7 +36,7 @@ static inline pgd_t *pgd_alloc(struct mm_struct *mm)
return quicklist_alloc(QUICK_PGD, GFP_KERNEL | __GFP_REPEAT, pgd_ctor);
}
static inline void pgd_free(pgd_t *pgd)
static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
{
quicklist_free(QUICK_PGD, NULL, pgd);
}
@ -54,12 +54,12 @@ static inline struct page *pte_alloc_one(struct mm_struct *mm,
return pg ? virt_to_page(pg) : NULL;
}
static inline void pte_free_kernel(pte_t *pte)
static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
{
quicklist_free(QUICK_PT, NULL, pte);
}
static inline void pte_free(struct page *pte)
static inline void pte_free(struct mm_struct *mm, struct page *pte)
{
quicklist_free_page(QUICK_PT, NULL, pte);
}
@ -71,7 +71,7 @@ static inline void pte_free(struct page *pte)
* inside the pgd, so has no extra memory associated with it.
*/
#define pmd_free(x) do { } while (0)
#define pmd_free(mm, x) do { } while (0)
#define __pmd_free_tlb(tlb,x) do { } while (0)
static inline void check_pgt_cache(void)

12
include/asm-sparc/pgalloc.h
View File

@ -32,7 +32,7 @@ BTFIXUPDEF_CALL(pgd_t *, get_pgd_fast, void)
BTFIXUPDEF_CALL(void, free_pgd_fast, pgd_t *)
#define free_pgd_fast(pgd) BTFIXUP_CALL(free_pgd_fast)(pgd)
#define pgd_free(pgd) free_pgd_fast(pgd)
#define pgd_free(mm, pgd) free_pgd_fast(pgd)
#define pgd_alloc(mm) get_pgd_fast()
BTFIXUPDEF_CALL(void, pgd_set, pgd_t *, pmd_t *)
@ -45,8 +45,8 @@ BTFIXUPDEF_CALL(pmd_t *, pmd_alloc_one, struct mm_struct *, unsigned long)
BTFIXUPDEF_CALL(void, free_pmd_fast, pmd_t *)
#define free_pmd_fast(pmd) BTFIXUP_CALL(free_pmd_fast)(pmd)
#define pmd_free(pmd) free_pmd_fast(pmd)
#define __pmd_free_tlb(tlb, pmd) pmd_free(pmd)
#define pmd_free(mm, pmd) free_pmd_fast(pmd)
#define __pmd_free_tlb(tlb, pmd) pmd_free((tlb)->mm, pmd)
BTFIXUPDEF_CALL(void, pmd_populate, pmd_t *, struct page *)
#define pmd_populate(MM, PMD, PTE) BTFIXUP_CALL(pmd_populate)(PMD, PTE)
@ -59,10 +59,10 @@ BTFIXUPDEF_CALL(pte_t *, pte_alloc_one_kernel, struct mm_struct *, unsigned long
#define pte_alloc_one_kernel(mm, addr) BTFIXUP_CALL(pte_alloc_one_kernel)(mm, addr)
BTFIXUPDEF_CALL(void, free_pte_fast, pte_t *)
#define pte_free_kernel(pte) BTFIXUP_CALL(free_pte_fast)(pte)
#define pte_free_kernel(mm, pte) BTFIXUP_CALL(free_pte_fast)(pte)
BTFIXUPDEF_CALL(void, pte_free, struct page *)
#define pte_free(pte) BTFIXUP_CALL(pte_free)(pte)
#define __pte_free_tlb(tlb, pte) pte_free(pte)
#define pte_free(mm, pte) BTFIXUP_CALL(pte_free)(pte)
#define __pte_free_tlb(tlb, pte) pte_free((tlb)->mm, pte)
#endif /* _SPARC_PGALLOC_H */

8
include/asm-sparc64/pgalloc.h
View File

@ -20,7 +20,7 @@ static inline pgd_t *pgd_alloc(struct mm_struct *mm)
return quicklist_alloc(0, GFP_KERNEL, NULL);
}
static inline void pgd_free(pgd_t *pgd)
static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
{
quicklist_free(0, NULL, pgd);
}
@ -32,7 +32,7 @@ static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
return quicklist_alloc(0, GFP_KERNEL, NULL);
}
static inline void pmd_free(pmd_t *pmd)
static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
{
quicklist_free(0, NULL, pmd);
}
@ -50,12 +50,12 @@ static inline struct page *pte_alloc_one(struct mm_struct *mm,
return pg ? virt_to_page(pg) : NULL;
}
static inline void pte_free_kernel(pte_t *pte)
static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
{
quicklist_free(0, NULL, pte);
}
static inline void pte_free(struct page *ptepage)
static inline void pte_free(struct mm_struct *mm, struct page *ptepage)
{
quicklist_free_page(0, NULL, ptepage);
}

4
include/asm-sparc64/tlb.h
View File

@ -100,8 +100,8 @@ static inline void tlb_remove_page(struct mmu_gather *mp, struct page *page)
}
#define tlb_remove_tlb_entry(mp,ptep,addr) do { } while (0)
#define pte_free_tlb(mp,ptepage) pte_free(ptepage)
#define pmd_free_tlb(mp,pmdp) pmd_free(pmdp)
#define pte_free_tlb(mp, ptepage) pte_free((mp)->mm, ptepage)
#define pmd_free_tlb(mp, pmdp) pmd_free((mp)->mm, pmdp)
#define pud_free_tlb(tlb,pudp) __pud_free_tlb(tlb,pudp)
#define tlb_migrate_finish(mm) do { } while (0)

8
include/asm-um/pgalloc.h
View File

@ -23,17 +23,17 @@
* Allocate and free page tables.
*/
extern pgd_t *pgd_alloc(struct mm_struct *);
extern void pgd_free(pgd_t *pgd);
extern void pgd_free(struct mm_struct *mm, pgd_t *pgd);
extern pte_t *pte_alloc_one_kernel(struct mm_struct *, unsigned long);
extern struct page *pte_alloc_one(struct mm_struct *, unsigned long);
static inline void pte_free_kernel(pte_t *pte)
static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
{
free_page((unsigned long) pte);
}
static inline void pte_free(struct page *pte)
static inline void pte_free(struct mm_struct *mm, struct page *pte)
{
__free_page(pte);
}
@ -42,7 +42,7 @@ static inline void pte_free(struct page *pte)
#ifdef CONFIG_3_LEVEL_PGTABLES
static inline void pmd_free(pmd_t *pmd)
static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
{
free_page((unsigned long)pmd);
}

8
include/asm-x86/pgalloc_32.h
View File

@ -36,17 +36,17 @@ static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, struct page *p
* Allocate and free page tables.
*/
extern pgd_t *pgd_alloc(struct mm_struct *);
extern void pgd_free(pgd_t *pgd);
extern void pgd_free(struct mm_struct *mm, pgd_t *pgd);
extern pte_t *pte_alloc_one_kernel(struct mm_struct *, unsigned long);
extern struct page *pte_alloc_one(struct mm_struct *, unsigned long);
static inline void pte_free_kernel(pte_t *pte)
static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
{
free_page((unsigned long)pte);
}
static inline void pte_free(struct page *pte)
static inline void pte_free(struct mm_struct *mm, struct page *pte)
{
__free_page(pte);
}
@ -63,7 +63,7 @@ static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
return (pmd_t *)get_zeroed_page(GFP_KERNEL|__GFP_REPEAT);
}
static inline void pmd_free(pmd_t *pmd)
static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
{
BUG_ON((unsigned long)pmd & (PAGE_SIZE-1));
free_page((unsigned long)pmd);

10
include/asm-x86/pgalloc_64.h
View File

@ -17,7 +17,7 @@ static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, struct page *p
set_pmd(pmd, __pmd(_PAGE_TABLE | (page_to_pfn(pte) << PAGE_SHIFT)));
}
static inline void pmd_free(pmd_t *pmd)
static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
{
BUG_ON((unsigned long)pmd & (PAGE_SIZE-1));
free_page((unsigned long)pmd);
@ -33,7 +33,7 @@ static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
return (pud_t *)get_zeroed_page(GFP_KERNEL|__GFP_REPEAT);
}
static inline void pud_free (pud_t *pud)
static inline void pud_free(struct mm_struct *mm, pud_t *pud)
{
BUG_ON((unsigned long)pud & (PAGE_SIZE-1));
free_page((unsigned long)pud);
@ -77,7 +77,7 @@ static inline pgd_t *pgd_alloc(struct mm_struct *mm)
return pgd;
}
static inline void pgd_free(pgd_t *pgd)
static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
{
BUG_ON((unsigned long)pgd & (PAGE_SIZE-1));
pgd_list_del(pgd);
@ -100,13 +100,13 @@ static inline struct page *pte_alloc_one(struct mm_struct *mm, unsigned long add
/* Should really implement gc for free page table pages. This could be
done with a reference count in struct page. */
static inline void pte_free_kernel(pte_t *pte)
static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
{
BUG_ON((unsigned long)pte & (PAGE_SIZE-1));
free_page((unsigned long)pte);
}
static inline void pte_free(struct page *pte)
static inline void pte_free(struct mm_struct *mm, struct page *pte)
{
__free_page(pte);
}

6
include/asm-xtensa/pgalloc.h
View File

@ -31,7 +31,7 @@ pgd_alloc(struct mm_struct *mm)
return (pgd_t*) __get_free_pages(GFP_KERNEL | __GFP_ZERO, PGD_ORDER);
}
static inline void pgd_free(pgd_t *pgd)
static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
{
free_page((unsigned long)pgd);
}
@ -52,12 +52,12 @@ static inline struct page *pte_alloc_one(struct mm_struct *mm,
return virt_to_page(pte_alloc_one_kernel(mm, addr));
}
static inline void pte_free_kernel(pte_t *pte)
static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
{
kmem_cache_free(pgtable_cache, pte);
}
static inline void pte_free(struct page *page)
static inline void pte_free(struct mm_struct *mm, struct page *page)
{
kmem_cache_free(pgtable_cache, page_address(page));
}

2
include/asm-xtensa/tlb.h
View File

@ -42,6 +42,6 @@
#include <asm-generic/tlb.h>
#define __pte_free_tlb(tlb,pte) pte_free(pte)
#define __pte_free_tlb(tlb, pte) pte_free((tlb)->mm, pte)
#endif /* _XTENSA_TLB_H */

2
kernel/fork.c
View File

@ -325,7 +325,7 @@ static inline int mm_alloc_pgd(struct mm_struct * mm)
static inline void mm_free_pgd(struct mm_struct * mm)
{
pgd_free(mm->pgd);
pgd_free(mm, mm->pgd);
}
#else
#define dup_mmap(mm, oldmm) (0)

10
mm/memory.c
View File

@ -305,7 +305,7 @@ int __pte_alloc(struct mm_struct *mm, pmd_t *pmd, unsigned long address)
spin_lock(&mm->page_table_lock);
if (pmd_present(*pmd)) { /* Another has populated it */
pte_lock_deinit(new);
pte_free(new);
pte_free(mm, new);
} else {
mm->nr_ptes++;
inc_zone_page_state(new, NR_PAGETABLE);
@ -323,7 +323,7 @@ int __pte_alloc_kernel(pmd_t *pmd, unsigned long address)
spin_lock(&init_mm.page_table_lock);
if (pmd_present(*pmd)) /* Another has populated it */
pte_free_kernel(new);
pte_free_kernel(&init_mm, new);
else
pmd_populate_kernel(&init_mm, pmd, new);
spin_unlock(&init_mm.page_table_lock);
@ -2501,7 +2501,7 @@ int __pud_alloc(struct mm_struct *mm, pgd_t *pgd, unsigned long address)
spin_lock(&mm->page_table_lock);
if (pgd_present(*pgd)) /* Another has populated it */
pud_free(new);
pud_free(mm, new);
else
pgd_populate(mm, pgd, new);
spin_unlock(&mm->page_table_lock);
@ -2523,12 +2523,12 @@ int __pmd_alloc(struct mm_struct *mm, pud_t *pud, unsigned long address)
spin_lock(&mm->page_table_lock);
#ifndef __ARCH_HAS_4LEVEL_HACK
if (pud_present(*pud)) /* Another has populated it */
pmd_free(new);
pmd_free(mm, new);
else
pud_populate(mm, pud, new);
#else
if (pgd_present(*pud)) /* Another has populated it */
pmd_free(new);
pmd_free(mm, new);
else
pgd_populate(mm, pud, new);
#endif /* __ARCH_HAS_4LEVEL_HACK */