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[PATCH] mm: uml kill unused 

In worrying over the various pte operations in different architectures, I came
across some unused functions in UML: remove mprotect_kernel_vm,
protect_vm_page and addr_pte.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Hugh Dickins 2005-10-29 18:16:39 -07:00 committed by Linus Torvalds
parent 8f5cd76c18
commit b38c6845b6
2 changed files with 0 additions and 37 deletions
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1
arch/um/include/tlb.h
View File

@ -34,7 +34,6 @@ struct host_vm_op {
} u; } u;
}; };
extern void mprotect_kernel_vm(int w);
extern void force_flush_all(void); extern void force_flush_all(void);
extern void fix_range_common(struct mm_struct *mm, unsigned long start_addr, extern void fix_range_common(struct mm_struct *mm, unsigned long start_addr,
unsigned long end_addr, int force, unsigned long end_addr, int force,

36
arch/um/kernel/tt/tlb.c
View File

@ -74,42 +74,6 @@ void flush_tlb_kernel_range_tt(unsigned long start, unsigned long end)
atomic_inc(&vmchange_seq); atomic_inc(&vmchange_seq);
} }
static void protect_vm_page(unsigned long addr, int w, int must_succeed)
{
int err;
err = protect_memory(addr, PAGE_SIZE, 1, w, 1, must_succeed);
if(err == 0) return;
else if((err == -EFAULT) || (err == -ENOMEM)){
flush_tlb_kernel_range(addr, addr + PAGE_SIZE);
protect_vm_page(addr, w, 1);
}
else panic("protect_vm_page : protect failed, errno = %d\n", err);
}
void mprotect_kernel_vm(int w)
{
struct mm_struct *mm;
pgd_t *pgd;
pud_t *pud;
pmd_t *pmd;
pte_t *pte;
unsigned long addr;
mm = &init_mm;
for(addr = start_vm; addr < end_vm;){
pgd = pgd_offset(mm, addr);
pud = pud_offset(pgd, addr);
pmd = pmd_offset(pud, addr);
if(pmd_present(*pmd)){
pte = pte_offset_kernel(pmd, addr);
if(pte_present(*pte)) protect_vm_page(addr, w, 0);
addr += PAGE_SIZE;
}
else addr += PMD_SIZE;
}
}
void flush_tlb_kernel_vm_tt(void) void flush_tlb_kernel_vm_tt(void)
{ {
flush_tlb_kernel_range(start_vm, end_vm); flush_tlb_kernel_range(start_vm, end_vm);