Commit ae6b585e authored by Oleg Nesterov's avatar Oleg Nesterov
Browse files

exec: document acct_arg_size() 



Add the comment to explain acct_arg_size().

Signed-off-by: default avatarOleg Nesterov <oleg@redhat.com>
Reviewed-by: default avatarKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
parent 0e028465

fs/exec.c

+6 −1
Original line number Diff line number Diff line
@@ -167,7 +167,12 @@ SYSCALL_DEFINE1(uselib, const char __user *, library) 
}



#ifdef CONFIG_MMU



/*

 * The nascent bprm->mm is not visible until exec_mmap() but it can

 * use a lot of memory, account these pages in current->mm temporary

 * for oom_badness()->get_mm_rss(). Once exec succeeds or fails, we

 * change the counter back via acct_arg_size(0).

 */

static void acct_arg_size(struct linux_binprm *bprm, unsigned long pages)

{

	struct mm_struct *mm = current->mm;