__vmalloc: propagating GFP allocation flag.

- adds functions to allow caller to pass the GFP flag for memory allocation
- helps in fixing the Bug 30702 (__vmalloc(GFP_NOFS) can callback
  file system evict_inode).

Signed-off-by: Anand Mitra <redacted>
Signed-off-by: Prasad Joshi <redacted>
---
Chnagelog:
arch/alpha/include/asm/pgalloc.h |   18 ++++++++++++++----
1 files changed, 14 insertions(+), 4 deletions(-)
---

diff --git a/arch/alpha/include/asm/pgalloc.h b/arch/alpha/include/asm/pgalloc.h
index bc2a0da..d05dfc2 100644
--- a/arch/alpha/include/asm/pgalloc.h
+++ b/arch/alpha/include/asm/pgalloc.h

@@ -38,10 +38,15 @@ pgd_free(struct mm_struct *mm, pgd_t *pgd)
 }

 static inline pmd_t *
+__pmd_alloc_one(struct mm_struct *mm, unsigned long address, gfp_t gfp_mask)
+{
+	return (pmd_t *)__get_free_page(gfp_mask | __GFP_ZERO);
+}
+
+static inline pmd_t *
 pmd_alloc_one(struct mm_struct *mm, unsigned long address)
 {
-	pmd_t *ret = (pmd_t *)__get_free_page(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO);
-	return ret;
+	return __pmd_alloc_one(mm, address, GFP_KERNEL | __GFP_REPEAT);
 }

 static inline void

@@ -51,10 +56,15 @@ pmd_free(struct mm_struct *mm, pmd_t *pmd)
 }

 static inline pte_t *
+__pte_alloc_one_kernel(struct mm_struct *mm, unsigned long addressi,

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

 static inline void