Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

[linux-drm-fsl-dcu.git] / mm / mempool.c

diff --git a/mm/mempool.c b/mm/mempool.c
index fe6e05289cc5b5b7b30f036980fb7ea3835892e0..cc1ca86dfc2496b6e0cae7703d4a6dc4f4f97150 100644 (file)
--- a/mm/mempool.c
+++ b/mm/mempool.c
@@ -46,9 +46,9 @@ static void free_pool(mempool_t *pool)
  * @pool_data: optional private data available to the user-defined functions.
  *
  * this function creates and allocates a guaranteed size, preallocated
- * memory pool. The pool can be used from the mempool_alloc and mempool_free
+ * memory pool. The pool can be used from the mempool_alloc() and mempool_free()
  * functions. This function might sleep. Both the alloc_fn() and the free_fn()
- * functions might sleep - as long as the mempool_alloc function is not called
+ * functions might sleep - as long as the mempool_alloc() function is not called
  * from IRQ contexts.
  */
 mempool_t *mempool_create(int min_nr, mempool_alloc_t *alloc_fn,
@@ -195,7 +195,7 @@ EXPORT_SYMBOL(mempool_destroy);
  *             mempool_create().
  * @gfp_mask:  the usual allocation bitmask.
  *
- * this function only sleeps if the alloc_fn function sleeps or
+ * this function only sleeps if the alloc_fn() function sleeps or
  * returns NULL. Note that due to preallocation, this function
  * *never* fails when called from process contexts. (it might
  * fail if called from an IRQ context.)
@@ -238,8 +238,13 @@ repeat_alloc:
        init_wait(&wait);
        prepare_to_wait(&pool->wait, &wait, TASK_UNINTERRUPTIBLE);
        smp_mb();
-       if (!pool->curr_nr)
-               io_schedule();
+       if (!pool->curr_nr) {
+               /*
+                * FIXME: this should be io_schedule().  The timeout is there
+                * as a workaround for some DM problems in 2.6.18.
+                */
+               io_schedule_timeout(5*HZ);
+       }
        finish_wait(&pool->wait, &wait);
 
        goto repeat_alloc;