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[PATCH] mm: rmap optimisation

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Optimise rmap functions by minimising atomic operations when we know there
will be no concurrent modifications.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Cc: 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:
Nick Piggin
2006-01-06 00:11:12 -08:00
committed by Linus Torvalds
parent 224abf92b2
commit 9617d95e6e
4 changed files with 43 additions and 15 deletions
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fs/exec.c
+1 -1
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@@ -324,7 +324,7 @@ void install_arg_page(struct vm_area_struct *vma,
lru_cache_add_active(page);
set_pte_at(mm, address, pte, pte_mkdirty(pte_mkwrite(mk_pte(
page, vma->vm_page_prot))));
page_add_anon_rmap(page, vma, address);
page_add_new_anon_rmap(page, vma, address);
pte_unmap_unlock(pte, ptl);
/* no need for flush_tlb */