From 0ae26f1b3159f3acb21ae1e866c3c7e16edd450f Mon Sep 17 00:00:00 2001
From: Andrew Morton <akpm@osdl.org>
Date: Fri, 23 Jun 2006 02:05:15 -0700
Subject: [PATCH] mmput() might sleep
exit_aio() and exit_mmap() can sleep. But it's easy to accidentally call
mmput() from inside locks.
Cc: Dave Peterson <dsp@llnl.gov>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
kernel/fork.c | 2 ++
1 file changed, 2 insertions(+)
(limited to 'kernel/fork.c')
diff --git a/kernel/fork.c b/kernel/fork.c
index ac8100e3088a..195958a3a4d6 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -368,6 +368,8 @@ void fastcall __mmdrop(struct mm_struct *mm)
*/
void mmput(struct mm_struct *mm)
{
+ might_sleep();
+
if (atomic_dec_and_test(&mm->mm_users)) {
exit_aio(mm);
exit_mmap(mm);
--
cgit v1.2.3