linux-kernel - [RFC][PATCH v2 07/23] (m32r) __vmalloc: add gfp flags variant of pte and pmd allocation

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Date:	Mon, 14 Mar 2011 17:39:54 +0000
From:	Prasad Joshi <prasadjoshi124@...il.com>
To:	Hirokazu Takata <takata@...ux-m32r.org>,
	linux-m32r@...linux-m32r.org, linux-m32r-ja@...linux-m32r.org,
	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 07/23] (m32r) __vmalloc: add gfp flags variant of pte
 and pmd 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/m32r/include/asm/pgalloc.h |   11 ++++++++---
1 files changed, 8 insertions(+), 3 deletions(-)
---
diff --git a/arch/m32r/include/asm/pgalloc.h b/arch/m32r/include/asm/pgalloc.h
index 0fc7361..0c1e4ae 100644
--- a/arch/m32r/include/asm/pgalloc.h
+++ b/arch/m32r/include/asm/pgalloc.h
@@ -30,12 +30,16 @@ static inline void pgd_free(struct mm_struct *mm,
pgd_t *pgd)
 	free_page((unsigned long)pgd);
 }

+static __inline__ 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_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_ZERO);
-
-	return pte;
+	return __pte_alloc_one_kernel(mm, address, GFP_KERNEL);
 }

 static __inline__ pgtable_t pte_alloc_one(struct mm_struct *mm,
@@ -66,6 +70,7 @@ static inline void pte_free(struct mm_struct *mm,
pgtable_t pte)
  * (In the PAE case we free the pmds as part of the pgd.)
  */

+#define __pmd_alloc_one(mm, addr,mask)		({ BUG(); ((pmd_t *)2); })
 #define pmd_alloc_one(mm, addr)		({ BUG(); ((pmd_t *)2); })
 #define pmd_free(mm, x)			do { } while (0)
 #define __pmd_free_tlb(tlb, x, addr)	do { } while (0)
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/