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SubjectRe: [RFC][PATCH v3 17/22] mm, ia64: add gfp flags variant of pud, pmd and pte allocations

- Added __pud_alloc_one which allows caller to specify the gfp_t flag.
Like pud_alloc_one the function calls quicklist_alloc() and passes
the given allocation flag.

- Changed pud_alloc_one to call __pud_alloc_one using GFP_KERNEL.

- Added similar changes for pte and pmd allocation functions.

- Helps in fixing the Bug 30702.

Signed-off-by: Prasad Joshi <prasadjoshi124@gmail.com>
Signed-off-by: Anand Mitra <mitra@kqinfotech.com>
---
arch/ia64/include/asm/pgalloc.h | 24 +++++++++++++++++++++---
1 files changed, 21 insertions(+), 3 deletions(-)

diff --git a/arch/ia64/include/asm/pgalloc.h b/arch/ia64/include/asm/pgalloc.h
index 96a8d92..0e46e47 100644
--- a/arch/ia64/include/asm/pgalloc.h
+++ b/arch/ia64/include/asm/pgalloc.h
@@ -39,9 +39,15 @@ pgd_populate(struct mm_struct *mm, pgd_t * pgd_entry, pud_t * pud)
pgd_val(*pgd_entry) = __pa(pud);
}

+static inline pud_t *
+__pud_alloc_one(struct mm_struct *mm, unsigned long addr, gfp_t gfp_mask)
+{
+ return quicklist_alloc(0, gfp_mask, NULL);
+}
+
static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
{
- return quicklist_alloc(0, GFP_KERNEL, NULL);
+ return __pud_alloc_one(mm, addr, GFP_KERNEL);
}

static inline void pud_free(struct mm_struct *mm, pud_t *pud)
@@ -57,9 +63,15 @@ pud_populate(struct mm_struct *mm, pud_t * pud_entry, pmd_t * pmd)
pud_val(*pud_entry) = __pa(pmd);
}

+static inline pmd_t *
+__pmd_alloc_one(struct mm_struct *mm, unsigned long addr, gfp_t gfp_mask)
+{
+ return quicklist_alloc(0, gfp_mask, NULL);
+}
+
static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
{
- return quicklist_alloc(0, GFP_KERNEL, NULL);
+ return __pmd_alloc_one(mm, addr, GFP_KERNEL);
}

static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
@@ -95,10 +107,16 @@ static inline pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long addr)
return page;
}

+static inline pte_t *__pte_alloc_one_kernel(struct mm_struct *mm,
+ unsigned long addr, gfp_t gfp_mask)
+{
+ return quicklist_alloc(0, gfp_mask, NULL);
+}
+
static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
unsigned long addr)
{
- return quicklist_alloc(0, GFP_KERNEL, NULL);
+ return __pte_alloc_one_kernel(mm, addr, GFP_KERNEL);
}

static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
--
1.7.0.4


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