linux-kernel - [RFC][PATCH v2 15/23] (score) __vmalloc: add gfp flags variant of pte, pmd, and pud allocation

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Date:	Mon, 14 Mar 2011 17:58:03 +0000
From:	Prasad Joshi <prasadjoshi124@...il.com>
To:	Chen Liqin <liqin.chen@...plusct.com>,
	Lennox Wu <lennox.wu@...il.com>,
	Prasad Joshi <prasadjoshi124@...il.com>,
	Anand Mitra <mitra@...nfotech.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	linux-arch@...r.kernel.org
Subject: [RFC][PATCH v2 15/23] (score) __vmalloc: add gfp flags variant of
 pte, pmd, and pud allocation

__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 <mitra@...nfotech.com>
Signed-off-by: Prasad Joshi <prasadjoshi124@...il.com>
---
Chnagelog:
arch/score/include/asm/pgalloc.h |   13 +++++++------
1 files changed, 7 insertions(+), 6 deletions(-)
---
diff --git a/arch/score/include/asm/pgalloc.h b/arch/score/include/asm/pgalloc.h
index 059a61b..1a0a3a5 100644
--- a/arch/score/include/asm/pgalloc.h
+++ b/arch/score/include/asm/pgalloc.h
@@ -37,15 +37,16 @@ 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,
--
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