Merge remote-tracking branch 'kgdb/kgdb-next'

Merge remote-tracking branch 'mmc-uh/next'

Merge remote-tracking branch 'device-mapper/for-next'

Merge remote-tracking branch 'block/for-next'

Merge remote-tracking branch 'input/next'

Merge remote-tracking branch 'virtio/virtio-next'

Merge remote-tracking branch 'modules/modules-next'

Merge remote-tracking branch 'sound-asoc/for-next'

Merge remote-tracking branch 'sound/for-next'

Merge remote-tracking branch 'drm-exynos/exynos-drm/for-next'

Merge remote-tracking branch 'drm-misc/topic/drm-misc'

Merge remote-tracking branch 'drm/drm-next'

Merge remote-tracking branch 'crypto/master'

Conflicts:
crypto/Kconfig

Merge remote-tracking branch 'l2-mtd/master'

Merge remote-tracking branch 'bluetooth/master'

Merge remote-tracking branch 'wireless-drivers-next/master'

Merge remote-tracking branch 'ipsec-next/master'

Merge remote-tracking branch 'slave-dma/next'

Conflicts:
arch/arm/mach-shmobile/board-ape6evm.c
arch/arm/mach-shmobile/board-mackerel.c

Merge remote-tracking branch 'thermal-soc/next'

Merge remote-tracking branch 'thermal/next'

Merge remote-tracking branch 'idle/next'

Merge remote-tracking branch 'pm/linux-next'

Merge remote-tracking branch 'libata/for-next'

Merge remote-tracking branch 'kbuild/for-next'

Merge remote-tracking branch 'v4l-dvb/master'

Merge remote-tracking branch 'hwmon-staging/hwmon-next'

Merge remote-tracking branch 'i2c/i2c/for-next'

Merge remote-tracking branch 'hid/for-next'

Merge remote-tracking branch 'pci/next'

Merge remote-tracking branch 'vfs/for-next'

Conflicts:
fs/ext4/inode.c
fs/udf/file.c
net/9p/protocol.c

Merge remote-tracking branch 'net-next/master'

Merge remote-tracking branch 'file-locks/linux-next'

Merge remote-tracking branch 'xfs/for-next'

Merge remote-tracking branch 'ubifs/linux-next'

Merge remote-tracking branch 'v9fs/for-next'

Merge remote-tracking branch 'nfsd/nfsd-next'

Merge remote-tracking branch 'jfs/jfs-next'

Merge remote-tracking branch 'gfs2/for-next'

Merge remote-tracking branch 'fscache/fscache'

Conflicts:
fs/fscache/object.c

Merge remote-tracking branch 'f2fs/dev'

Merge remote-tracking branch 'ext4/dev'

Merge remote-tracking branch 'ext3/for_next'

Merge remote-tracking branch 'cifs/for-next'

Merge remote-tracking branch 'ceph/master'

Conflicts:
fs/ceph/inode.c
fs/ceph/snap.c
fs/ceph/super.c
fs/ceph/super.h
include/linux/ceph/libceph.h
net/ceph/auth_x.c
net/ceph/ceph_common.c

Merge remote-tracking branch 'btrfs/next'

Merge remote-tracking branch 'xtensa/for_next'

Merge remote-tracking branch 'uml/linux-next'

Merge remote-tracking branch 'tile/master'

Merge remote-tracking branch 's390/features'

Merge remote-tracking branch 'fsl/next'

Merge remote-tracking branch 'powerpc-mpe/next'

Merge remote-tracking branch 'powerpc/next'

Merge remote-tracking branch 'parisc-hd/for-next'

Merge remote-tracking branch 'mips/mips-for-linux-next'

Conflicts:
drivers/bus/Makefile
drivers/irqchip/Makefile

Merge remote-tracking branch 'metag/for-next'

Merge remote-tracking branch 'm68knommu/for-next'

Merge remote-tracking branch 'm68k/for-next'

Merge remote-tracking branch 'ia64/next'

Merge remote-tracking branch 'cris/for-next'

Merge remote-tracking branch 'c6x/for-linux-next'

Merge remote-tracking branch 'blackfin/for-linus'

Merge remote-tracking branch 'arm64-acpi/for-next/acpi'

Merge remote-tracking branch 'arm64/for-next/core'

Conflicts:
arch/arm64/configs/defconfig

Merge remote-tracking branch 'tegra/for-next'

Merge remote-tracking branch 'sunxi/sunxi/for-next'

Merge remote-tracking branch 'samsung/for-next'

Conflicts:
arch/arm/mach-exynos/platsmp.c

Merge remote-tracking branch 'renesas/next'

Merge remote-tracking branch 'omap-pending/for-next'

Conflicts:
arch/arm/mach-omap2/omap_hwmod_43xx_data.c

Merge remote-tracking branch 'omap/for-next'

Merge remote-tracking branch 'mvebu/for-next'

Merge remote-tracking branch 'keystone/next'

Merge remote-tracking branch 'imx-mxs/for-next'

Merge remote-tracking branch 'cortex-m/for-next'

Merge remote-tracking branch 'rpi/for-rpi-next'

Merge remote-tracking branch 'at91/at91-next'

Merge remote-tracking branch 'arm-soc/for-next'

Merge remote-tracking branch 'arm-perf/for-next/perf'

Merge remote-tracking branch 'arm/for-next'

Merge remote-tracking branch 'arc/for-next'

Merge remote-tracking branch 'input-current/for-linus'

Merge remote-tracking branch 'pci-current/for-linus'

Merge remote-tracking branch 'sound-current/for-linus'

Merge remote-tracking branch 'ipsec/master'

Merge remote-tracking branch 'net/master'

Merge remote-tracking branch 'arm-current/fixes'

Merge branch 'next-sriov' into next

Merge Richard's work to support SR-IOV on PowerNV. All generic PCI
patches acked by Bjorn.

Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "Final drm fixes: one core locking imbalance regression, and a bunch of
  i915 baytrail s/r fixes"

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm: fix drm_mode_getconnector() locking imbalance regression
  drm/i915/vlv: remove wait for previous GFX clk disable request
  drm/i915/chv: Remove Wait for a previous gfx force-off
  drm/i915/vlv: save/restore the power context base reg

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client

Pull ceph revert from Sage Weil:
 "This corrects a recent misadventure with __GFP_MEMALLOC and
  PF_MEMALLOC; it turns out it's not a good fit for RBD and we're better
  off relying on dirty page throttling"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
  Revert "libceph: use memalloc flags for net IO"

Merge tag 'v4.0-rc7' into drm-next

Linux 4.0-rc7

Requested by Alex for fixes -next needs.

Conflicts:
drivers/gpu/drm/i915/intel_sprite.c

Merge branch 'akpm' (patches from Andrew)

Merge misc fixes from Andrew Morton:
 "Three fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  mm: numa: disable change protection for vma(VM_HUGETLB)
  include/linux/dmapool.h: declare struct device
  mm: move zone lock to a different cache line than order-0 free page lists

Copy the kernel module data from user space in chunks

Unlike most (all?) other copies from user space, kernel module loading
is almost unlimited in size.  So we do a potentially huge
"copy_from_user()" when we copy the module data from user space to the
kernel buffer, which can be a latency concern when preemption is
disabled (or voluntary).

Also, because 'copy_from_user()' clears the tail of the kernel buffer on
failures, even a *failed* copy can end up wasting a lot of time.

Normally neither of these are concerns in real life, but they do trigger
when doing stress-testing with trinity.  Running in a VM seems to add
its own overheadm causing trinity module load testing to even trigger
the watchdog.

The simple fix is to just chunk up the module loading, so that it never
tries to copy insanely big areas in one go.  That bounds the latency,
and also the amount of (unnecessarily, in this case) cleared memory for
the failure case.

Reported-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

x86: clean up/fix 'copy_in_user()' tail zeroing

The rule for 'copy_from_user()' is that it zeroes the remaining kernel
buffer even when the copy fails halfway, just to make sure that we don't
leave uninitialized kernel memory around.  Because even if we check for
errors, some kernel buffers stay around after thge copy (think page
cache).

However, the x86-64 logic for user copies uses a copy_user_generic()
function for all the cases, that set the "zerorest" flag for any fault
on the source buffer.  Which meant that it didn't just try to clear the
kernel buffer after a failure in copy_from_user(), it also tried to
clear the destination user buffer for the "copy_in_user()" case.

Not only is that pointless, it also means that the clearing code has to
worry about the tail clearing taking page faults for the user buffer
case.  Which is just stupid, since that case shouldn't happen in the
first place.

Get rid of the whole "zerorest" thing entirely, and instead just check
if the destination is in kernel space or not.  And then just use
memset() to clear the tail of the kernel buffer if necessary.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Merge tag 'drm-intel-fixes-2015-04-08' of git://anongit.freedesktop.org/drm-intel into drm-fixes

three commits, all cc: stable, to address Baytrail
suspend/resume issues.

* tag 'drm-intel-fixes-2015-04-08' of git://anongit.freedesktop.org/drm-intel:
  drm/i915/vlv: remove wait for previous GFX clk disable request
  drm/i915/chv: Remove Wait for a previous gfx force-off
  drm/i915/vlv: save/restore the power context base reg

sfc: Revert SRIOV changes.

This reverts commits:

d92916f71a57582ce7276547510cedb2c10b6bd6 ("sfc: Own header for nic-specific sriov functions,")
25672dba9535b804331145379c79f835ba2205c5 ("sfc: Enable VF's via a write to the sysfs file
 sriov_numvfs")

As they break the build with SRIOV disabled and there is no
easy way to fix it the way things are arranged.

Reported-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Merge remote-tracking branches 'spi/topic/spidev' and 'spi/topic/spidev-test' into spi-next

Merge remote-tracking branches 'spi/topic/qup', 'spi/topic/rockchip', 'spi/topic/rspi', 'spi/topic/s3c64xx' and 'spi/topic/sc18is602' into spi-next

Merge remote-tracking branches 'spi/topic/omap-100k', 'spi/topic/omap-uwire', 'spi/topic/pl022', 'spi/topic/pm' and 'spi/topic/pxa2xx' into spi-next

Merge remote-tracking branches 'spi/topic/fsl-cspi', 'spi/topic/fsl-dspi', 'spi/topic/imx' and 'spi/topic/of-id' into spi-next

Merge remote-tracking branches 'spi/topic/blackfin', 'spi/topic/cadence', 'spi/topic/dw' and 'spi/topic/err' into spi-next

Merge remote-tracking branches 'spi/topic/atmel', 'spi/topic/bcm2385', 'spi/topic/bcm2835', 'spi/topic/bcm53xx' and 'spi/topic/bitbang' into spi-next