From: Prasad Joshi <prasadjoshi124@gmail.com>
To: Prasad Joshi <prasadjoshi124@gmail.com>,
Anand Mitra <mitra@kqinfotech.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
linux-arch@vger.kernel.org, Kyle McMartin <kyle@mcmartin.ca>,
Helge Deller <deller@gmx.de>,
"James E.J. Bottomley" <jejb@parisc-linux.org>,
linux-parisc@vger.kernel.org
Subject: [RFC][PATCH v2 12/23] (parisc) __vmalloc: add gfp flags variant of pte and pmd allocation
Date: Mon, 14 Mar 2011 17:50:49 +0000 [thread overview]
Message-ID: <AANLkTin94oVyZ0-6sm5aRi-Xb+2tsNXQ2J+DbyDOMqZB@mail.gmail.com> (raw)
__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@kqinfotech.com>
Signed-off-by: Prasad Joshi <prasadjoshi124@gmail.com>
---
Chnagelog:
arch/parisc/include/asm/pgalloc.h | 21 ++++++++++++++++-----
1 files changed, 16 insertions(+), 5 deletions(-)
---
diff --git a/arch/parisc/include/asm/pgalloc.h
b/arch/parisc/include/asm/pgalloc.h
index fc987a1..0284a43 100644
--- a/arch/parisc/include/asm/pgalloc.h
+++ b/arch/parisc/include/asm/pgalloc.h
@@ -61,15 +61,20 @@ static inline void pgd_populate(struct mm_struct
*mm, pgd_t *pgd, pmd_t *pmd)
(__u32)(__pa((unsigned long)pmd) >> PxD_VALUE_SHIFT));
}
-static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
+static inline pmd_t *
+__pmd_alloc_one(struct mm_struct *mm, unsigned long address, gfp_t gfp_mask)
{
- pmd_t *pmd = (pmd_t *)__get_free_pages(GFP_KERNEL|__GFP_REPEAT,
- PMD_ORDER);
+ pmd_t *pmd = (pmd_t *)__get_free_pages(gfp_mask, PMD_ORDER);
if (pmd)
memset(pmd, 0, PAGE_SIZE<<PMD_ORDER);
return pmd;
}
+static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
+{
+ return __pmd_alloc_one(mm, address, GFP_KERNEL | __GFP_REPEAT);
+}
+
static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
{
#ifdef CONFIG_64BIT
@@ -90,6 +95,7 @@ static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
* inside the pgd, so has no extra memory associated with it.
*/
+#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 pgd_populate(mm, pmd, pte) BUG()
@@ -127,10 +133,15 @@ pte_alloc_one(struct mm_struct *mm, unsigned long address)
}
static inline pte_t *
+__pte_alloc_one_kernel(struct mm_struct *mm, unsigned long addr,
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 addr)
{
- pte_t *pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO);
- return pte;
+ return __pte_alloc_one_kernel(mm, addr, GFP_KERNEL | __GFP_REPEAT);
}
static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
--
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reply other threads:[~2011-03-14 17:50 UTC|newest]
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