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SubjectRe: [RFC][PATCH v3 13/22] mm, mips: add gfp flags variant of pmd and pte allocations

- Added __pmd_alloc_one to allocate pages using the given allocation flag.

- Changed pmd_alloc_one to call __pmd_alloc_one and pass
GFP_KERNEL | __GFP_REPEAT allocation flag.

- Added __pte_alloc_one_kernel to allocate zeroed pages using the given
allocation flag. The function pte_alloc_one_kernel() has been changed to
call __pte_alloc_one_kernel() passing GFP_KERNEL | __GFP_REPEAT
allocation flags.

- Helps in fixing the Bug 30702

Signed-off-by: Prasad Joshi <prasadjoshi124@gmail.com>
Signed-off-by: Anand Mitra <mitra@kqinfotech.com>
---
arch/mips/include/asm/pgalloc.h | 22 +++++++++++++++-------
1 files changed, 15 insertions(+), 7 deletions(-)

diff --git a/arch/mips/include/asm/pgalloc.h b/arch/mips/include/asm/pgalloc.h
index 881d18b..f2c5439 100644
--- a/arch/mips/include/asm/pgalloc.h
+++ b/arch/mips/include/asm/pgalloc.h
@@ -64,14 +64,16 @@ static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
free_pages((unsigned long)pgd, PGD_ORDER);
}

+static inline pte_t *__pte_alloc_one_kernel(struct mm_struct *mm,
+ unsigned long address, gfp_t gfp_mask)
+{
+ return (pte_t *) __get_free_pages(gfp_mask | __GFP_ZERO, PTE_ORDER);
+}
+
static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
unsigned long address)
{
- pte_t *pte;
-
- pte = (pte_t *) __get_free_pages(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO, PTE_ORDER);
-
- return pte;
+ return __pte_alloc_one_kernel(mm, address, GFP_KERNEL | __GFP_REPEAT);
}

static inline struct page *pte_alloc_one(struct mm_struct *mm,
@@ -106,16 +108,22 @@ do { \

#ifndef __PAGETABLE_PMD_FOLDED

-static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
+static inline pmd_t *
+__pmd_alloc_one(struct mm_struct *mm, unsigned long address, gfp_t gfp_mask)
{
pmd_t *pmd;

- pmd = (pmd_t *) __get_free_pages(GFP_KERNEL|__GFP_REPEAT, PMD_ORDER);
+ pmd = (pmd_t *) __get_free_pages(gfp_mask, PMD_ORDER);
if (pmd)
pmd_init((unsigned long)pmd, (unsigned long)invalid_pte_table);
return pmd;
}

+static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
+{
+ return __pmd_alloc_one(mm, address, GFP_KERNEL | __GFP_REPEAT);
+}
+
static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
{
free_pages((unsigned long)pmd, PMD_ORDER);
--
1.7.0.4


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