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authorAndrew Morton <akpm@osdl.org>2006-06-23 02:05:15 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-23 07:43:03 -0700
commit0ae26f1b3159f3acb21ae1e866c3c7e16edd450f (patch)
tree28a86cc8682ad5b247f597773572e410b9457d72
parent32797f976d62af709943aae38a9457b5a6dbcd8a (diff)
[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>
-rw-r--r--kernel/fork.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/fork.c b/kernel/fork.c
index ac8100e3088..195958a3a4d 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);