Commit 32e107f7 authored Jul 26, 2011 by Oleg Nesterov Committed by Linus Torvalds Jul 26, 2011

fs/exec.c:acct_arg_size(): ptl is no longer needed for add_mm_counter()

acct_arg_size() takes ->page_table_lock around add_mm_counter() if
!SPLIT_RSS_COUNTING.  This is not needed after commit 172703b0 ("mm:
delete non-atomic mm counter implementation").

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Reviewed-by: Matt Fleming <matt.fleming@linux.intel.com>
Cc: Dave Hansen <dave@linux.vnet.ibm.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent b4edf8bd

fs/exec.c

+0 −7

Original line number	Diff line number	Diff line
		@@ -181,14 +181,7 @@ static void acct_arg_size(struct linux_binprm *bprm, unsigned long pages)
		return;

		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,