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authorWANG Cong <xiyou.wangcong@gmail.com>2008-07-23 21:28:49 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-24 10:47:24 -0700
commit4a5675820436e4ad738dd442c1cc8a165101509b (patch)
tree95781177e1a055e74c9a163137030537134ef4d8
parent4c182ae7810f3fe444e666f3f78c209a7c116fdf (diff)
arch/um/kernel/mem.c: remove arch_validate()
- Remove arch_validate(), because no one uses it. - Remove useless macro HAVE_ARCH_VALIDATE. - Make the variable 'empty_bad_page' static. Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: WANG Cong <wangcong@zeuux.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--arch/um/kernel/ksyms.c1
-rw-r--r--arch/um/kernel/mem.c33
-rw-r--r--include/asm-um/page.h3
3 files changed, 1 insertions, 36 deletions
diff --git a/arch/um/kernel/ksyms.c b/arch/um/kernel/ksyms.c
index ccc02a616c2..836fc9b9470 100644
--- a/arch/um/kernel/ksyms.c
+++ b/arch/um/kernel/ksyms.c
@@ -18,7 +18,6 @@ EXPORT_SYMBOL(get_signals);
EXPORT_SYMBOL(kernel_thread);
EXPORT_SYMBOL(sys_waitpid);
EXPORT_SYMBOL(flush_tlb_range);
-EXPORT_SYMBOL(arch_validate);
EXPORT_SYMBOL(high_physmem);
EXPORT_SYMBOL(empty_zero_page);
diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c
index b0ee64622ff..e2274ef3155 100644
--- a/arch/um/kernel/mem.c
+++ b/arch/um/kernel/mem.c
@@ -21,7 +21,7 @@
/* allocated in paging_init, zeroed in mem_init, and unchanged thereafter */
unsigned long *empty_zero_page = NULL;
/* allocated in paging_init and unchanged thereafter */
-unsigned long *empty_bad_page = NULL;
+static unsigned long *empty_bad_page = NULL;
/*
* Initialized during boot, and readonly for initializing page tables
@@ -240,37 +240,6 @@ void __init paging_init(void)
#endif
}
-struct page *arch_validate(struct page *page, gfp_t mask, int order)
-{
- unsigned long addr, zero = 0;
- int i;
-
- again:
- if (page == NULL)
- return page;
- if (PageHighMem(page))
- return page;
-
- addr = (unsigned long) page_address(page);
- for (i = 0; i < (1 << order); i++) {
- current->thread.fault_addr = (void *) addr;
- if (__do_copy_to_user((void __user *) addr, &zero,
- sizeof(zero),
- &current->thread.fault_addr,
- &current->thread.fault_catcher)) {
- if (!(mask & __GFP_WAIT))
- return NULL;
- else break;
- }
- addr += PAGE_SIZE;
- }
-
- if (i == (1 << order))
- return page;
- page = alloc_pages(mask, order);
- goto again;
-}
-
/*
* This can't do anything because nothing in the kernel image can be freed
* since it's not in kernel physical memory.
diff --git a/include/asm-um/page.h b/include/asm-um/page.h
index 335c57383c0..a6df1f13d73 100644
--- a/include/asm-um/page.h
+++ b/include/asm-um/page.h
@@ -115,9 +115,6 @@ extern unsigned long uml_physmem;
#define pfn_valid(pfn) ((pfn) < max_mapnr)
#define virt_addr_valid(v) pfn_valid(phys_to_pfn(__pa(v)))
-extern struct page *arch_validate(struct page *page, gfp_t mask, int order);
-#define HAVE_ARCH_VALIDATE
-
#include <asm-generic/memory_model.h>
#include <asm-generic/page.h>