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,
Geert Uytterhoeven <geert@linux-m68k.org>,
Roman Zippel <zippel@linux-m68k.org>,
linux-m68k@vger.kernel.org
Subject: [RFC][PATCH v2 08/23] (m68k) __vmalloc: add gfp flags variant of pte and pmd allocation
Date: Mon, 14 Mar 2011 17:42:04 +0000 [thread overview]
Message-ID: <AANLkTi=aZBzCXBwxYPYxs4SQ0L0gKO+tywPBcnAqfLpx@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/m68k/include/asm/motorola_pgalloc.h | 20 +++++++++++++++++---
arch/m68k/include/asm/sun3_pgalloc.h | 14 +++++++++++---
arch/m68k/mm/memory.c | 9 +++++++--
3 files changed, 35 insertions(+), 8 deletions(-)
---
diff --git a/arch/m68k/include/asm/motorola_pgalloc.h
b/arch/m68k/include/asm/motorola_pgalloc.h
index 2f02f26..0d345e6 100644
--- a/arch/m68k/include/asm/motorola_pgalloc.h
+++ b/arch/m68k/include/asm/motorola_pgalloc.h
@@ -5,13 +5,16 @@
#include <asm/tlbflush.h>
extern pmd_t *get_pointer_table(void);
+extern pmd_t *__get_pointer_table (gfp_t);
extern int free_pointer_table(pmd_t *);
-static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
unsigned long address)
+static inline pte_t *
+__pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address,
+ gfp_t gfp_mask)
{
pte_t *pte;
- pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO);
+ pte = (pte_t *)__get_free_page(gfp_mask | __GFP_ZERO);
if (pte) {
__flush_page_to_ram(pte);
flush_tlb_kernel_page(pte);
@@ -21,6 +24,12 @@ static inline pte_t *pte_alloc_one_kernel(struct
mm_struct *mm, unsigned long ad
return pte;
}
+static inline pte_t *
+pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
+{
+ return __pte_alloc_one_kernel(mm, address, GFP_KERNEL | __GFP_REPEAT);
+}
+
static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
{
cache_page(pte);
@@ -61,10 +70,15 @@ static inline void __pte_free_tlb(struct
mmu_gather *tlb, pgtable_t page,
__free_page(page);
}
+static inline pmd_t *
+__pmd_alloc_one(struct mm_struct *mm, unsigned long address, gfp_t gfp_mask)
+{
+ return __get_pointer_table(gfp_mask);
+}
static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
{
- return get_pointer_table();
+ return __pmd_alloc_one(mm, address, GFP_KERNEL);
}
static inline int pmd_free(struct mm_struct *mm, pmd_t *pmd)
diff --git a/arch/m68k/include/asm/sun3_pgalloc.h
b/arch/m68k/include/asm/sun3_pgalloc.h
index 48d80d5..29cddb6 100644
--- a/arch/m68k/include/asm/sun3_pgalloc.h
+++ b/arch/m68k/include/asm/sun3_pgalloc.h
@@ -18,6 +18,7 @@
extern const char bad_pmd_string[];
+#define __pmd_alloc_one(mm,address,mask) ({ BUG(); ((pmd_t *)2); })
#define pmd_alloc_one(mm,address) ({ BUG(); ((pmd_t *)2); })
@@ -38,10 +39,11 @@ do { \
tlb_remove_page((tlb), pte); \
} while (0)
-static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
- unsigned long address)
+static inline pte_t *
+__pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address,
+ gfp_t gfp_mask)
{
- unsigned long page = __get_free_page(GFP_KERNEL|__GFP_REPEAT);
+ unsigned long page = __get_free_page(gfp_mask);
if (!page)
return NULL;
@@ -50,6 +52,12 @@ static inline pte_t *pte_alloc_one_kernel(struct
mm_struct *mm,
return (pte_t *) (page);
}
+static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
+ unsigned long address)
+{
+ return __pte_alloc_one_kernel(mm, address, GFP_KERNEL | __GFP_REPEAT);
+}
+
static inline pgtable_t pte_alloc_one(struct mm_struct *mm,
unsigned long address)
{
diff --git a/arch/m68k/mm/memory.c b/arch/m68k/mm/memory.c
index 34c77ce..1b2da3c 100644
--- a/arch/m68k/mm/memory.c
+++ b/arch/m68k/mm/memory.c
@@ -59,7 +59,7 @@ void __init init_pointer_table(unsigned long ptable)
return;
}
-pmd_t *get_pointer_table (void)
+pmd_t *__get_pointer_table (gfp_t gfp_mask)
{
ptable_desc *dp = ptable_list.next;
unsigned char mask = PD_MARKBITS (dp);
@@ -76,7 +76,7 @@ pmd_t *get_pointer_table (void)
void *page;
ptable_desc *new;
- if (!(page = (void *)get_zeroed_page(GFP_KERNEL)))
+ if (!(page = (void *)get_zeroed_page(gfp_mask)))
return NULL;
flush_tlb_kernel_page(page);
@@ -99,6 +99,11 @@ pmd_t *get_pointer_table (void)
return (pmd_t *) (page_address(PD_PAGE(dp)) + off);
}
+pmd_t *get_pointer_table (void)
+{
+ return __get_pointer_table(GFP_KERNEL);
+}
+
int free_pointer_table (pmd_t *ptable)
{
ptable_desc *dp;
reply other threads:[~2011-03-14 17:42 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='AANLkTi=aZBzCXBwxYPYxs4SQ0L0gKO+tywPBcnAqfLpx@mail.gmail.com' \
--to=prasadjoshi124@gmail.com \
--cc=akpm@linux-foundation.org \
--cc=geert@linux-m68k.org \
--cc=linux-arch@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-m68k@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=mitra@kqinfotech.com \
--cc=zippel@linux-m68k.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).