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| author | Hugh Dickins <hugh@veritas.com> | 2005-10-29 18:16:13 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-10-29 21:40:39 -0700 |
| commit | 8c10376271e097fa13cda956e1b2f3cb7e4d4dd9 (patch) | |
| tree | 0bb1c428bfddce70eb1195c625add027899416e0 /mm/memory.c | |
| parent | b5810039a54e5babf428e9a1e89fc1940fabff11 (diff) | |
| download | kernel_samsung_smdk4412-8c10376271e097fa13cda956e1b2f3cb7e4d4dd9.tar.gz kernel_samsung_smdk4412-8c10376271e097fa13cda956e1b2f3cb7e4d4dd9.tar.bz2 kernel_samsung_smdk4412-8c10376271e097fa13cda956e1b2f3cb7e4d4dd9.zip | |
[PATCH] mm: copy_one_pte inc rss
Small adjustment, following Nick's suggestion: it's more straightforward for
copy_pte_range to let copy_one_pte do the rss incrementation, than use an
index it passed back. Saves a #define, and 16 bytes of .text.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm/memory.c')
| -rw-r--r-- | mm/memory.c | 15 |
1 files changed, 5 insertions, 10 deletions
diff --git a/mm/memory.c b/mm/memory.c index e83f9440bb6..7893eb4bb8c 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -340,8 +340,6 @@ static inline void add_mm_rss(struct mm_struct *mm, int file_rss, int anon_rss) add_mm_counter(mm, anon_rss, anon_rss); } -#define NO_RSS 2 /* Increment neither file_rss nor anon_rss */ - /* * This function is called to print an error when a pte in a * !VM_RESERVED region is found pointing to an invalid pfn (which @@ -368,16 +366,15 @@ void print_bad_pte(struct vm_area_struct *vma, pte_t pte, unsigned long vaddr) * but may be dropped within p[mg]d_alloc() and pte_alloc_map(). */ -static inline int +static inline void copy_one_pte(struct mm_struct *dst_mm, struct mm_struct *src_mm, pte_t *dst_pte, pte_t *src_pte, struct vm_area_struct *vma, - unsigned long addr) + unsigned long addr, int *rss) { unsigned long vm_flags = vma->vm_flags; pte_t pte = *src_pte; struct page *page; unsigned long pfn; - int anon = NO_RSS; /* pte contains position in swap or file, so copy. */ if (unlikely(!pte_present(pte))) { @@ -428,11 +425,10 @@ copy_one_pte(struct mm_struct *dst_mm, struct mm_struct *src_mm, pte = pte_mkold(pte); get_page(page); page_dup_rmap(page); - anon = !!PageAnon(page); + rss[!!PageAnon(page)]++; out_set_pte: set_pte_at(dst_mm, addr, dst_pte, pte); - return anon; } static int copy_pte_range(struct mm_struct *dst_mm, struct mm_struct *src_mm, @@ -441,7 +437,7 @@ static int copy_pte_range(struct mm_struct *dst_mm, struct mm_struct *src_mm, { pte_t *src_pte, *dst_pte; int progress = 0; - int rss[NO_RSS+1], anon; + int rss[2]; again: rss[1] = rss[0] = 0; @@ -467,8 +463,7 @@ again: progress++; continue; } - anon = copy_one_pte(dst_mm, src_mm, dst_pte, src_pte, vma,addr); - rss[anon]++; + copy_one_pte(dst_mm, src_mm, dst_pte, src_pte, vma, addr, rss); progress += 8; } while (dst_pte++, src_pte++, addr += PAGE_SIZE, addr != end); spin_unlock(&src_mm->page_table_lock); |