From c34faf224b959bf61e4c3eb29c66a12edbd31841 Mon Sep 17 00:00:00 2001
From: Thomas Hellstrom <thomas-at-tungstengraphics-dot-com>
Date: Tue, 17 Oct 2006 20:03:26 +0200
Subject: Remove max number of locked pages check and call, since that is now
 handled by the memory accounting.

---
 libdrm/xf86drm.c        | 15 ---------------
 libdrm/xf86mm.h         |  1 -
 linux-core/drmP.h       |  1 -
 linux-core/drm_bo.c     | 27 ---------------------------
 linux-core/drm_compat.c |  5 -----
 shared-core/drm.h       |  1 -
 6 files changed, 50 deletions(-)

diff --git a/libdrm/xf86drm.c b/libdrm/xf86drm.c
index 253ba690..5c799b6d 100644
--- a/libdrm/xf86drm.c
+++ b/libdrm/xf86drm.c
@@ -3187,21 +3187,6 @@ int drmMMTakedown(int fd, unsigned memType)
     return 0;	
 }
 
-int drmMMMaxLockedSize(int fd, unsigned long maxLockedSize)
-{
-    drm_mm_init_arg_t arg;
-
-
-    memset(&arg, 0, sizeof(arg));
-    arg.req.op = mm_set_max_pages;
-    arg.req.p_size = maxLockedSize / getpagesize();
-
-    if (ioctl(fd, DRM_IOCTL_MM_INIT, &arg))
-	return -errno;
-    
-    return 0;	
-}
-
 int drmMMLock(int fd, unsigned memType)
 {
     drm_mm_init_arg_t arg;
diff --git a/libdrm/xf86mm.h b/libdrm/xf86mm.h
index c3112c90..da868fe5 100644
--- a/libdrm/xf86mm.h
+++ b/libdrm/xf86mm.h
@@ -198,7 +198,6 @@ extern int drmBOWaitIdle(int fd, drmBO *buf, unsigned hint);
 extern int drmMMInit(int fd, unsigned long pOffset, unsigned long pSize,
 		     unsigned memType);
 extern int drmMMTakedown(int fd, unsigned memType);
-extern int drmMMMaxLockedSize(int fd, unsigned long maxLockedSize);
 extern int drmMMLock(int fd, unsigned memType);
 extern int drmMMUnlock(int fd, unsigned memType);
 
diff --git a/linux-core/drmP.h b/linux-core/drmP.h
index b10e9881..fab3608f 100644
--- a/linux-core/drmP.h
+++ b/linux-core/drmP.h
@@ -814,7 +814,6 @@ typedef struct drm_buffer_manager{
 	struct list_head ddestroy;
         struct work_struct wq;
         uint32_t fence_type;
-        unsigned long max_pages;
         unsigned long cur_pages;
         atomic_t count;
 } drm_buffer_manager_t;
diff --git a/linux-core/drm_bo.c b/linux-core/drm_bo.c
index e8e8a274..b8ee6c15 100644
--- a/linux-core/drm_bo.c
+++ b/linux-core/drm_bo.c
@@ -1859,7 +1859,6 @@ int drm_bo_driver_init(drm_device_t * dev)
 	drm_bo_driver_t *driver = dev->driver->bo_driver;
 	drm_buffer_manager_t *bm = &dev->bm;
 	int ret = -EINVAL;
-	struct sysinfo si;
 
 	mutex_lock(&dev->bm.init_mutex);
 	mutex_lock(&dev->struct_mutex);
@@ -1880,8 +1879,6 @@ int drm_bo_driver_init(drm_device_t * dev)
 	bm->nice_mode = 1;
 	atomic_set(&bm->count, 0);
 	bm->cur_pages = 0;
-	si_meminfo(&si);
-	bm->max_pages = si.totalram >> 1;
 	INIT_LIST_HEAD(&bm->unfenced);
 	INIT_LIST_HEAD(&bm->ddestroy);
       out_unlock:
@@ -1944,30 +1941,6 @@ int drm_mm_init_ioctl(DRM_IOCTL_ARGS)
 				  "Delaying takedown\n", arg.req.mem_type);
 		}
 		break;
-	case mm_set_max_pages:{
-			struct sysinfo si;
-			mutex_lock(&dev->bm.init_mutex);
-			mutex_lock(&dev->struct_mutex);
-			if (arg.req.p_size < bm->cur_pages) {
-				DRM_ERROR
-				    ("Cannot currently decrease max number of "
-				     "locked pages below the number currently "
-				     "locked.\n");
-				ret = -EINVAL;
-				break;
-			}
-			si_meminfo(&si);
-			if (arg.req.p_size > si.totalram) {
-				DRM_ERROR
-				    ("Cannot set max number of locked pages "
-				     "to %lu since the total number of RAM pages "
-				     "is %lu.\n", (unsigned long)arg.req.p_size,
-				     (unsigned long)si.totalram);
-				ret = -EINVAL;
-				break;
-			}
-			bm->max_pages = arg.req.p_size;
-		}
 	case mm_lock:
 		LOCK_TEST_WITH_RETURN(dev, filp);
 		mutex_lock(&dev->bm.init_mutex);
diff --git a/linux-core/drm_compat.c b/linux-core/drm_compat.c
index 4a035f49..90e53419 100644
--- a/linux-core/drm_compat.c
+++ b/linux-core/drm_compat.c
@@ -234,11 +234,6 @@ struct page *drm_vm_ttm_nopage(struct vm_area_struct *vma,
 	page = ttm->pages[page_offset];
 
 	if (!page) {
-		if (bm->cur_pages >= bm->max_pages) {
-	 		DRM_ERROR("Maximum locked page count exceeded\n"); 
-			page = NOPAGE_OOM;
-			goto out;
-		}
 		if (drm_alloc_memctl(PAGE_SIZE)) {
 			page = NOPAGE_OOM;
 			goto out;
diff --git a/shared-core/drm.h b/shared-core/drm.h
index 915befba..4a6a370e 100644
--- a/shared-core/drm.h
+++ b/shared-core/drm.h
@@ -829,7 +829,6 @@ typedef union drm_mm_init_arg{
 	struct {
 		enum {
 			mm_init,
-			mm_set_max_pages,
 			mm_takedown,
 			mm_query,
 			mm_lock,
-- 
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