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Filename Latest commit message Latest commit date
Chris Wilson cb6d7c7dc7 drm/i915/userptr: Acquire the page lock around set_page_dirty()
set_page_dirty says:

	For pages with a mapping this should be done under the page lock
	for the benefit of asynchronous memory errors who prefer a
	consistent dirty state. This rule can be broken in some special
	cases, but should be better not to.

Under those rules, it is only safe for us to use the plain set_page_dirty
calls for shmemfs/anonymous memory. Userptr may be used with real
mappings and so needs to use the locked version (set_page_dirty_lock).

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=203317
Fixes: 5cc9ed4b9a ("drm/i915: Introduce mapping of user pages into video memory (userptr) ioctl")
References: 6dcc693bc5 ("ext4: warn when page is dirtied without buffers")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: stable@vger.kernel.org
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190708140327.26825-1-chris@chris-wilson.co.uk
2019-07-09 08:16:25 +01:00
arch The usual smattering of fixes and tunings that came in too late for the 2019-05-26 13:45:15 -07:00
block
certs
crypto
Documentation Documentation/i915: fix file references after display/ subdir renames 2019-06-18 10:20:39 +03:00
drivers drm/i915/userptr: Acquire the page lock around set_page_dirty() 2019-07-09 08:16:25 +01:00
fs Bug fixes (including a regression fix) for ext4. 2019-05-25 15:03:12 -07:00
include drm/i915: Show support for accurate sw PMU busyness tracking 2019-07-04 15:42:24 +01:00
init
ipc
kernel Make the GCC 9 warning for sub struct memset go away. 2019-05-26 13:49:40 -07:00
lib for-linus-20190524 2019-05-24 16:02:14 -07:00
LICENSES
mm
net SPDX update for 5.2-rc2, round 2 2019-05-24 14:31:58 -07:00
samples
scripts Devicetree fixes for 5.2: 2019-05-24 15:16:46 -07:00
security SPDX update for 5.2-rc2, round 2 2019-05-24 14:31:58 -07:00
sound
tools The usual smattering of fixes and tunings that came in too late for the 2019-05-26 13:45:15 -07:00
usr
virt The usual smattering of fixes and tunings that came in too late for the 2019-05-26 13:45:15 -07:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS drm-misc-next for v5.3, try #2: 2019-05-28 08:59:11 +10:00
Makefile Linux 5.2-rc2 2019-05-26 16:49:19 -07:00
README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.