Commit 0ae26f1b authored by Andrew Morton's avatar Andrew Morton Committed by Linus Torvalds
Browse files

[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: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 32797f97

kernel/fork.c

+2 −0
Original line number Diff line number Diff line
@@ -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);