drm/mm: revert "Break long searches in fragmented address spaces"

This reverts commit 7be1b9b8e9d1e9ef0342d2e001f44eec4030aa4d.

The drm_mm is supposed to work in atomic context, so calling schedule()
or in this case cond_resched() is illegal.

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/359278/

diff --git a/drivers/gpu/drm/drm_mm.c b/drivers/gpu/drm/drm_mm.c
index bc6e208..8981abe 100644 (file)
--- a/drivers/gpu/drm/drm_mm.c
+++ b/drivers/gpu/drm/drm_mm.c
@@ -45,7 +45,6 @@
 #include <linux/export.h>
 #include <linux/interval_tree_generic.h>
 #include <linux/seq_file.h>
-#include <linux/sched/signal.h>
 #include <linux/slab.h>
 #include <linux/stacktrace.h>
 
@@ -367,11 +366,6 @@ next_hole(struct drm_mm *mm,
          struct drm_mm_node *node,
          enum drm_mm_insert_mode mode)
 {
-       /* Searching is slow; check if we ran out of time/patience */
-       cond_resched();
-       if (fatal_signal_pending(current))
-               return NULL;
-
        switch (mode) {
        default:
        case DRM_MM_INSERT_BEST:
@@ -563,7 +557,7 @@ int drm_mm_insert_node_in_range(struct drm_mm * const mm,
                return 0;
        }
 
-       return signal_pending(current) ? -ERESTARTSYS : -ENOSPC;
+       return -ENOSPC;
 }
 EXPORT_SYMBOL(drm_mm_insert_node_in_range);