linux.git/drivers/android, branch v4.13

ANDROID: binder: fix proc->tsk check.

2017-08-23T01:42:57+00:00

Commit c4ea41ba195d ("binder: use group leader instead of open thread")'
was incomplete and didn't update a check in binder_mmap(), causing all
mmap() calls into the binder driver to fail.

Signed-off-by: Martijn Coenen 
Tested-by: John Stultz 
Cc: stable 
Signed-off-by: Greg Kroah-Hartman

binder: Use wake up hint for synchronous transactions.

2017-07-17T12:44:19+00:00

Use wake_up_interruptible_sync() to hint to the scheduler binder
transactions are synchronous wakeups. Disable preemption while waking
to avoid ping-ponging on the binder lock.

Signed-off-by: Todd Kjos 
Signed-off-by: Omprakash Dhyade 
Cc: stable  # 4.4+
Signed-off-by: Greg Kroah-Hartman

binder: use group leader instead of open thread

2017-07-17T12:44:19+00:00

The binder allocator assumes that the thread that
called binder_open will never die for the lifetime of
that proc. That thread is normally the group_leader,
however it may not be. Use the group_leader instead
of current.

Signed-off-by: Todd Kjos 
Cc: stable  # 4.4+
Signed-off-by: Greg Kroah-Hartman

Revert "android: binder: Sanity check at binder ioctl"

2017-07-17T12:44:19+00:00

This reverts commit a906d6931f3ccaf7de805643190765ddd7378e27.

The patch introduced a race in the binder driver. An attempt to fix the
race was submitted in "[PATCH v2] android: binder: fix dangling pointer
comparison", however the conclusion in the discussion for that patch
was that the original patch should be reverted.

The reversion is being done as part of the fine-grained locking
patchset since the patch would need to be refactored when
proc->vmm_vm_mm is removed from struct binder_proc and added
in the binder allocator.

Signed-off-by: Todd Kjos 
Cc: stable  # 4.6+
Signed-off-by: Greg Kroah-Hartman

binder: Add 'hwbinder' to the default devices

2017-03-17T06:10:49+00:00

As AOSP master is now starting to require a hwbinder device, add it to
the the default Kconfig. Having the hwbinder device when not needed
shouldn't hurt anything either.

Cc: Greg Kroah-Hartman 
Cc: John Stultz 
Cc: Martijn Coenen 
Cc: Arve Hjønnevåg 
Cc: Amit Pundir 
Cc: Serban Constantinescu 
Cc: Dmitry Shmidt 
Cc: Rom Lemarchand 
Cc: Android Kernel Team 
Signed-off-by: Rob Herring 
Signed-off-by: Greg Kroah-Hartman

sched/headers: Prepare for new header dependencies before moving code to

2017-03-02T07:42:29+00:00

We are going to split  out of , which
will have to be picked up from other headers and a couple of .c files.

Create a trivial placeholder  file that just
maps to  to make this patch obviously correct and
bisectable.

Include the new header in the files that are going to need it.

Acked-by: Linus Torvalds 
Cc: Mike Galbraith 
Cc: Peter Zijlstra 
Cc: Thomas Gleixner 
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar

sched/headers: Prepare for new header dependencies before moving code to

2017-03-02T07:42:28+00:00

We are going to split  out of , which
will have to be picked up from other headers and a couple of .c files.

Create a trivial placeholder  file that just
maps to  to make this patch obviously correct and
bisectable.

The APIs that are going to be moved first are:

   mm_alloc()
   __mmdrop()
   mmdrop()
   mmdrop_async_fn()
   mmdrop_async()
   mmget_not_zero()
   mmput()
   mmput_async()
   get_task_mm()
   mm_access()
   mm_release()

Include the new header in the files that are going to need it.

Acked-by: Linus Torvalds 
Cc: Mike Galbraith 
Cc: Peter Zijlstra 
Cc: Thomas Gleixner 
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar

mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf

2017-02-25T01:46:54+00:00

->fault(), ->page_mkwrite(), and ->pfn_mkwrite() calls do not need to
take a vma and vmf parameter when the vma already resides in vmf.

Remove the vma parameter to simplify things.

[arnd@arndb.de: fix ARM build]
  Link: http://lkml.kernel.org/r/20170125223558.1451224-1-arnd@arndb.de
Link: http://lkml.kernel.org/r/148521301778.19116.10840599906674778980.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Dave Jiang 
Signed-off-by: Arnd Bergmann 
Reviewed-by: Ross Zwisler 
Cc: Theodore Ts'o 
Cc: Darrick J. Wong 
Cc: Matthew Wilcox 
Cc: Dave Hansen 
Cc: Christoph Hellwig 
Cc: Jan Kara 
Cc: Dan Williams 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

mm: drop unused argument of zap_page_range()

2017-02-23T00:41:30+00:00

There's no users of zap_page_range() who wants non-NULL 'details'.
Let's drop it.

Link: http://lkml.kernel.org/r/20170118122429.43661-3-kirill.shutemov@linux.intel.com
Signed-off-by: Kirill A. Shutemov 
Acked-by: Michal Hocko 
Cc: Tetsuo Handa 
Cc: Peter Zijlstra 
Cc: Rik van Riel 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

binder: Add support for file-descriptor arrays

2017-02-10T15:00:01+00:00

This patch introduces a new binder_fd_array object,
that allows us to support one or more file descriptors
embedded in a buffer that is scatter-gathered.

Cc: Greg Kroah-Hartman 
Cc: Martijn Coenen 
Cc: Arve Hjønnevåg 
Cc: Amit Pundir 
Cc: Serban Constantinescu 
Cc: Dmitry Shmidt 
Cc: Rom Lemarchand 
Cc: Android Kernel Team 
Signed-off-by: Martijn Coenen 
Signed-off-by: John Stultz 
Signed-off-by: Greg Kroah-Hartman