Merge tag 'v4.0-rc1' into patchwork

Linux 34.0-rc1

* tag 'v4.0-rc1': (8947 commits)
  Linux 4.0-rc1
  autofs4 copy_dev_ioctl(): keep the value of ->size we'd used for allocation
  procfs: fix race between symlink removals and traversals
  debugfs: leave freeing a symlink body until inode eviction
  Documentation/filesystems/Locking: ->get_sb() is long gone
  trylock_super(): replacement for grab_super_passive()
  fanotify: Fix up scripted S_ISDIR/S_ISREG/S_ISLNK conversions
  Cachefiles: Fix up scripted S_ISDIR/S_ISREG/S_ISLNK conversions
  VFS: (Scripted) Convert S_ISLNK/DIR/REG(dentry->d_inode) to d_is_*(dentry)
  SELinux: Use d_is_positive() rather than testing dentry->d_inode
  Smack: Use d_is_positive() rather than testing dentry->d_inode
  TOMOYO: Use d_is_dir() rather than d_inode and S_ISDIR()
  Apparmor: Use d_is_positive/negative() rather than testing dentry->d_inode
  Apparmor: mediated_filesystem() should use dentry->d_sb not inode->i_sb
  VFS: Split DCACHE_FILE_TYPE into regular and special types
  VFS: Add a fallthrough flag for marking virtual dentries
  VFS: Add a whiteout dentry type
  VFS: Introduce inode-getting helpers for layered/unioned fs environments
  kernel: make READ_ONCE() valid on const arguments
  blk-throttle: check stats_cpu before reading it from sysfs
  ...

55 files changed, 749 insertions, 239 deletions

diff --git a/include/uapi/drm/drm.h b/include/uapi/drm/drm.h
index b0b855613641..01b2d6d0e355 100644
--- a/include/uapi/drm/drm.h
+++ b/include/uapi/drm/drm.h
@@ -654,6 +654,13 @@ struct drm_get_cap {
  */
 #define DRM_CLIENT_CAP_UNIVERSAL_PLANES  2
 
+/**
+ * DRM_CLIENT_CAP_ATOMIC
+ *
+ * If set to 1, the DRM core will expose atomic properties to userspace
+ */
+#define DRM_CLIENT_CAP_ATOMIC   3
+
 /** DRM_IOCTL_SET_CLIENT_CAP ioctl argument type */
 struct drm_set_client_cap {
         __u64 capability;
@@ -777,6 +784,7 @@ struct drm_prime_handle {
 #define DRM_IOCTL_MODE_OBJ_GETPROPERTIES        DRM_IOWR(0xB9, struct drm_mode_obj_get_properties)
 #define DRM_IOCTL_MODE_OBJ_SETPROPERTY  DRM_IOWR(0xBA, struct drm_mode_obj_set_property)
 #define DRM_IOCTL_MODE_CURSOR2          DRM_IOWR(0xBB, struct drm_mode_cursor2)
+#define DRM_IOCTL_MODE_ATOMIC           DRM_IOWR(0xBC, struct drm_mode_atomic)
 
 /**
  * Device specific ioctls should only be in their respective headers
diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h
index 646ae5f39f42..a284f11a8ef5 100644
--- a/include/uapi/drm/drm_fourcc.h
+++ b/include/uapi/drm/drm_fourcc.h
@@ -109,9 +109,6 @@
 #define DRM_FORMAT_NV24         fourcc_code('N', 'V', '2', '4') /* non-subsampled Cr:Cb plane */
 #define DRM_FORMAT_NV42         fourcc_code('N', 'V', '4', '2') /* non-subsampled Cb:Cr plane */
 
-/* special NV12 tiled format */
-#define DRM_FORMAT_NV12MT       fourcc_code('T', 'M', '1', '2') /* 2x2 subsampled Cr:Cb plane 64x32 macroblocks */
-
 /*
  * 3 plane YCbCr
  * index 0: Y plane, [7:0] Y
diff --git a/include/uapi/drm/drm_mode.h b/include/uapi/drm/drm_mode.h
index 86574b0005ff..ca788e01dab2 100644
--- a/include/uapi/drm/drm_mode.h
+++ b/include/uapi/drm/drm_mode.h
@@ -272,6 +272,13 @@ struct drm_mode_get_connector {
 #define DRM_MODE_PROP_OBJECT            DRM_MODE_PROP_TYPE(1)
 #define DRM_MODE_PROP_SIGNED_RANGE      DRM_MODE_PROP_TYPE(2)
 
+/* the PROP_ATOMIC flag is used to hide properties from userspace that
+ * is not aware of atomic properties.  This is mostly to work around
+ * older userspace (DDX drivers) that read/write each prop they find,
+ * witout being aware that this could be triggering a lengthy modeset.
+ */
+#define DRM_MODE_PROP_ATOMIC        0x80000000
+
 struct drm_mode_property_enum {
         __u64 value;
         char name[DRM_PROP_NAME_LEN];
@@ -338,7 +345,7 @@ struct drm_mode_fb_cmd2 {
 
         /*
          * In case of planar formats, this ioctl allows up to 4
-         * buffer objects with offets and pitches per plane.
+         * buffer objects with offsets and pitches per plane.
          * The pitch and offset order is dictated by the fourcc,
          * e.g. NV12 (http://fourcc.org/yuv.php#NV12) is described as:
          *
@@ -346,9 +353,9 @@ struct drm_mode_fb_cmd2 {
          *   followed by an interleaved U/V plane containing
          *   8 bit 2x2 subsampled colour difference samples.
          *
-         * So it would consist of Y as offset[0] and UV as
-         * offeset[1].  Note that offset[0] will generally
-         * be 0.
+         * So it would consist of Y as offsets[0] and UV as
+         * offsets[1].  Note that offsets[0] will generally
+         * be 0 (but this is not required).
          */
         __u32 handles[4];
         __u32 pitches[4]; /* pitch for each plane */
@@ -519,4 +526,27 @@ struct drm_mode_destroy_dumb {
         uint32_t handle;
 };
 
+/* page-flip flags are valid, plus: */
+#define DRM_MODE_ATOMIC_TEST_ONLY 0x0100
+#define DRM_MODE_ATOMIC_NONBLOCK  0x0200
+#define DRM_MODE_ATOMIC_ALLOW_MODESET 0x0400
+