1 files changed, 10 insertions, 3 deletions

diff --git a/include/linux/aio.h b/include/linux/aio.h
index 403d71dcb7c8..49fd37629ee4 100644
--- a/include/linux/aio.h
+++ b/include/linux/aio.h
@@ -124,7 +124,7 @@ struct kiocb {
                 (x)->ki_users = 1;                      \
                 (x)->ki_key = KIOCB_SYNC_KEY;           \
                 (x)->ki_filp = (filp);                  \
-                (x)->ki_ctx = &tsk->active_mm->default_kioctx;  \
+                (x)->ki_ctx = NULL;                     \
                 (x)->ki_cancel = NULL;                  \
                 (x)->ki_dtor = NULL;                    \
                 (x)->ki_obj.tsk = tsk;                  \
@@ -210,8 +210,15 @@ struct kioctx *lookup_ioctx(unsigned long ctx_id);
 int FASTCALL(io_submit_one(struct kioctx *ctx, struct iocb __user *user_iocb,
                                   struct iocb *iocb));
 
-#define get_ioctx(kioctx)       do { if (unlikely(atomic_read(&(kioctx)->users) <= 0)) BUG(); atomic_inc(&(kioctx)->users); } while (0)
-#define put_ioctx(kioctx)       do { if (unlikely(atomic_dec_and_test(&(kioctx)->users))) __put_ioctx(kioctx); else if (unlikely(atomic_read(&(kioctx)->users) < 0)) BUG(); } while (0)
+#define get_ioctx(kioctx) do {                                          \
+        BUG_ON(unlikely(atomic_read(&(kioctx)->users) <= 0));           \
+        atomic_inc(&(kioctx)->users);                                   \
+} while (0)
+#define put_ioctx(kioctx) do {                                          \
+        BUG_ON(unlikely(atomic_read(&(kioctx)->users) <= 0));           \
+        if (unlikely(atomic_dec_and_test(&(kioctx)->users)))            \
+                __put_ioctx(kioctx);                                    \
+} while (0)
 
 #define in_aio() !is_sync_wait(current->io_wait)
 /* may be used for debugging */