[RFC][PATCH 15/25]: Propagating GFP_NOFS inside __vmalloc()

[RFC][PATCH 15/25]: Propagating GFP_NOFS inside __vmalloc()

[Prasad Joshi]

Signed-off-by: Anand Mitra <mitra@kqinfotech.com>
Signed-off-by: Prasad Joshi <prasadjoshi124@gmail.com>
---
diff --git a/arch/x86/include/asm/pgalloc.h b/arch/x86/include/asm/pgalloc.h
index b4389a4..a3bc41d 100644
--- a/arch/x86/include/asm/pgalloc.h
+++ b/arch/x86/include/asm/pgalloc.h
@@ -34,6 +34,7 @@ extern pgd_t *pgd_alloc(struct mm_struct *);
 extern void pgd_free(struct mm_struct *mm, pgd_t *pgd);

 extern pte_t *pte_alloc_one_kernel(struct mm_struct *, unsigned long);
+extern pte_t *__pte_alloc_one_kernel(struct mm_struct *, unsigned long, gfp_t);
 extern pgtable_t pte_alloc_one(struct mm_struct *, unsigned long);

 /* Should really implement gc for free page table pages. This could be
@@ -78,9 +79,15 @@ static inline void pmd_populate(struct mm_struct
*mm, pmd_t *pmd,
 #define pmd_pgtable(pmd) pmd_page(pmd)

 #if PAGETABLE_LEVELS > 2
+static inline pmd_t *
+__pmd_alloc_one(struct mm_struct *mm, unsigned long addr, gfp_t gfp_mask)
+{
+   return (pmd_t *)get_zeroed_page(gfp_mask|__GFP_REPEAT);
+}
+
 static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
 {
-   return (pmd_t *)get_zeroed_page(GFP_KERNEL|__GFP_REPEAT);
+   return __pmd_alloc_one(mm, addr, GFP_KERNEL);
 }

 static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
@@ -114,9 +121,15 @@ static inline void pgd_populate(struct mm_struct
*mm, pgd_t *pgd, pud_t *pud)
    set_pgd(pgd, __pgd(_PAGE_TABLE | __pa(pud)));
 }

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

 static inline void pud_free(struct mm_struct *mm, pud_t *pud)
diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c
index 500242d..6b61bbd 100644
--- a/arch/x86/mm/pgtable.c
+++ b/arch/x86/mm/pgtable.c
@@ -15,9 +15,16 @@

 gfp_t __userpte_alloc_gfp = PGALLOC_GFP | PGALLOC_USER_GFP;

+pte_t *
+__pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address,
gfp_t gfp_mask)
+{
+   return (pte_t *)__get_free_page(gfp_mask | __GFP_NOTRACK |
+               __GFP_REPEAT | __GFP_ZERO);
+}
+
 pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
 {
-   return (pte_t *)__get_free_page(PGALLOC_GFP);
+   return __pte_alloc_one_kernel(mm, address, GFP_KERNEL);
 }

 pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address)

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