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linux-sg2042
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[PATCH] mm: vm_stat_account unshackled 

The original vm_stat_account has fallen into disuse, with only one user, and
only one user of vm_stat_unaccount.  It's easier to keep track if we convert
them all to __vm_stat_account, then free it from its __shackles.

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 18:15:56 -07:00 committed by Linus Torvalds
parent 72866f6f27
commit ab50b8ed81
7 changed files with 20 additions and 31 deletions
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3
arch/ia64/kernel/perfmon.c
View File

@ -2352,7 +2352,8 @@ pfm_smpl_buffer_alloc(struct task_struct *task, pfm_context_t *ctx, unsigned lon
insert_vm_struct(mm, vma);
mm->total_vm += size >> PAGE_SHIFT;
vm_stat_account(vma);
vm_stat_account(vma->vm_mm, vma->vm_flags, vma->vm_file,
vma_pages(vma));
up_write(&task->mm->mmap_sem);
/*

2
arch/ia64/mm/fault.c
View File

@ -41,7 +41,7 @@ expand_backing_store (struct vm_area_struct *vma, unsigned long address)
vma->vm_mm->total_vm += grow;
if (vma->vm_flags & VM_LOCKED)
vma->vm_mm->locked_vm += grow;
__vm_stat_account(vma->vm_mm, vma->vm_flags, vma->vm_file, grow);
vm_stat_account(vma->vm_mm, vma->vm_flags, vma->vm_file, grow);
return 0;
}

16
include/linux/mm.h
View File

@ -928,26 +928,14 @@ int remap_pfn_range(struct vm_area_struct *, unsigned long,
unsigned long, unsigned long, pgprot_t);
#ifdef CONFIG_PROC_FS
void __vm_stat_account(struct mm_struct *, unsigned long, struct file *, long);
void vm_stat_account(struct mm_struct *, unsigned long, struct file *, long);
#else
static inline void __vm_stat_account(struct mm_struct *mm,
static inline void vm_stat_account(struct mm_struct *mm,
unsigned long flags, struct file *file, long pages)
{
}
#endif /* CONFIG_PROC_FS */
static inline void vm_stat_account(struct vm_area_struct *vma)
{
__vm_stat_account(vma->vm_mm, vma->vm_flags, vma->vm_file,
vma_pages(vma));
}
static inline void vm_stat_unaccount(struct vm_area_struct *vma)
{
__vm_stat_account(vma->vm_mm, vma->vm_flags, vma->vm_file,
-vma_pages(vma));
}
/* update per process rss and vm hiwater data */
extern void update_mem_hiwater(struct task_struct *tsk);

2
kernel/fork.c
View File

@ -212,7 +212,7 @@ static inline int dup_mmap(struct mm_struct * mm, struct mm_struct * oldmm)
if (mpnt->vm_flags & VM_DONTCOPY) {
long pages = vma_pages(mpnt);
mm->total_vm -= pages;
__vm_stat_account(mm, mpnt->vm_flags, mpnt->vm_file,
vm_stat_account(mm, mpnt->vm_flags, mpnt->vm_file,
-pages);
continue;
}

20
mm/mmap.c
View File

@ -832,7 +832,7 @@ none:
}
#ifdef CONFIG_PROC_FS
void __vm_stat_account(struct mm_struct *mm, unsigned long flags,
void vm_stat_account(struct mm_struct *mm, unsigned long flags,
struct file *file, long pages)
{
const unsigned long stack_flags
@ -1110,7 +1110,7 @@ munmap_back:
}
out:
mm->total_vm += len >> PAGE_SHIFT;
__vm_stat_account(mm, vm_flags, file, len >> PAGE_SHIFT);
vm_stat_account(mm, vm_flags, file, len >> PAGE_SHIFT);
if (vm_flags & VM_LOCKED) {
mm->locked_vm += len >> PAGE_SHIFT;
make_pages_present(addr, addr + len);
@ -1475,7 +1475,7 @@ static int acct_stack_growth(struct vm_area_struct * vma, unsigned long size, un
mm->total_vm += grow;
if (vma->vm_flags & VM_LOCKED)
mm->locked_vm += grow;
__vm_stat_account(mm, vma->vm_flags, vma->vm_file, grow);
vm_stat_account(mm, vma->vm_flags, vma->vm_file, grow);
return 0;
}
@ -1610,15 +1610,15 @@ find_extend_vma(struct mm_struct * mm, unsigned long addr)
* By the time this function is called, the area struct has been
* removed from the process mapping list.
*/
static void unmap_vma(struct mm_struct *mm, struct vm_area_struct *area)
static void unmap_vma(struct mm_struct *mm, struct vm_area_struct *vma)
{
size_t len = area->vm_end - area->vm_start;
long nrpages = vma_pages(vma);
area->vm_mm->total_vm -= len >> PAGE_SHIFT;
if (area->vm_flags & VM_LOCKED)
area->vm_mm->locked_vm -= len >> PAGE_SHIFT;
vm_stat_unaccount(area);
remove_vm_struct(area);
mm->total_vm -= nrpages;
if (vma->vm_flags & VM_LOCKED)
mm->locked_vm -= nrpages;
vm_stat_account(mm, vma->vm_flags, vma->vm_file, -nrpages);
remove_vm_struct(vma);
}
/*

4
mm/mprotect.c
View File

@ -168,8 +168,8 @@ success:
vma->vm_flags = newflags;
vma->vm_page_prot = newprot;
change_protection(vma, start, end, newprot);
__vm_stat_account(mm, oldflags, vma->vm_file, -nrpages);
__vm_stat_account(mm, newflags, vma->vm_file, nrpages);
vm_stat_account(mm, oldflags, vma->vm_file, -nrpages);
vm_stat_account(mm, newflags, vma->vm_file, nrpages);
return 0;
fail:

4
mm/mremap.c
View File

@ -233,7 +233,7 @@ static unsigned long move_vma(struct vm_area_struct *vma,
* since do_munmap() will decrement it by old_len == new_len
*/
mm->total_vm += new_len >> PAGE_SHIFT;
__vm_stat_account(mm, vma->vm_flags, vma->vm_file, new_len>>PAGE_SHIFT);
vm_stat_account(mm, vma->vm_flags, vma->vm_file, new_len>>PAGE_SHIFT);
if (do_munmap(mm, old_addr, old_len) < 0) {
/* OOM: unable to split vma, just get accounts right */
@ -384,7 +384,7 @@ unsigned long do_mremap(unsigned long addr,
addr + new_len, vma->vm_pgoff, NULL);
current->mm->total_vm += pages;
__vm_stat_account(vma->vm_mm, vma->vm_flags,
vm_stat_account(vma->vm_mm, vma->vm_flags,
vma->vm_file, pages);
if (vma->vm_flags & VM_LOCKED) {
current->mm->locked_vm += pages;