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-rw-r--r--fs/exec.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/fs/exec.c b/fs/exec.c
index 89d788ca7829..5cb53f0232b1 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -167,7 +167,12 @@ out:
}
#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;