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[PATCH] mm: mm_init set_mm_counters

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How is anon_rss initialized?  In dup_mmap, and by mm_alloc's memset; but
that's not so good if an mm_counter_t is a special type.  And how is rss
initialized?  By set_mm_counter, all over the place.  Come on, we just need to
initialize them both at once by set_mm_counter in mm_init (which follows the
memcpy when forking).

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 18:16:04 -07:00
committed by Linus Torvalds
parent fc2acab31b
commit 404351e67a
9 changed files with 2 additions and 16 deletions
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4
kernel/fork.c
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@@ -198,8 +198,6 @@ static inline int dup_mmap(struct mm_struct * mm, struct mm_struct * oldmm)
mm->free_area_cache = oldmm->mmap_base;
mm->cached_hole_size = ~0UL;
mm->map_count = 0;
set_mm_counter(mm, rss, 0);
set_mm_counter(mm, anon_rss, 0);
cpus_clear(mm->cpu_vm_mask);
mm->mm_rb = RB_ROOT;
rb_link = &mm->mm_rb.rb_node;
@@ -323,6 +321,8 @@ static struct mm_struct * mm_init(struct mm_struct * mm)
INIT_LIST_HEAD(&mm->mmlist);
mm->core_waiters = 0;
mm->nr_ptes = 0;
set_mm_counter(mm, rss, 0);
set_mm_counter(mm, anon_rss, 0);
spin_lock_init(&mm->page_table_lock);
rwlock_init(&mm->ioctx_list_lock);
mm->ioctx_list = NULL;