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Date: Thu, 14 Jul 2011 15:16:20 +0200 From: Frantisek Hrbata <fhrbata@...hat.com> To: linux-kernel@...r.kernel.org Cc: oleg@...hat.com, matt.fleming@...ux.intel.com, hughd@...gle.com Subject: [PATCH] exec: remove page_table_lock for mm counters in acct_arg_size() Commit 172703b mm: delete non-atomic mm counter implementation removed non-atomic mm counters implementation. I think there is no need to hold page_table_lock for add_mm_counter() when the splitted page table locks are not used. This patch removes the locking. Signed-off-by: Frantisek Hrbata <fhrbata@...hat.com> --- fs/exec.c | 6 ------ 1 files changed, 0 insertions(+), 6 deletions(-) diff --git a/fs/exec.c b/fs/exec.c index 6075a1e..e6fc5e1 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -182,13 +182,7 @@ static void acct_arg_size(struct linux_binprm *bprm, unsigned long pages) bprm->vma_pages = pages; -#ifdef SPLIT_RSS_COUNTING add_mm_counter(mm, MM_ANONPAGES, diff); -#else - spin_lock(&mm->page_table_lock); - add_mm_counter(mm, MM_ANONPAGES, diff); - spin_unlock(&mm->page_table_lock); -#endif } static struct page *get_arg_page(struct linux_binprm *bprm, unsigned long pos, -- 1.7.4.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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