As part of unmap sequence, kernel client has to talk to the OSDs to
teardown watch on the header object. If none of the OSDs are available
it would hang forever, until interrupted by a signal - when that
happens we follow through with the rest of unmap procedure (i.e.
unregister the device and put all the data structures) and the unmap is
still considired successful (rbd cli tool exits with 0). The watch on
the userspace side should eventually timeout so that's fine.
This isn't very nice, because various userspace tools (pacemaker rbd
resource agent, for example) then have to worry about setting up their
own timeouts. Timeout it with mount_timeout (60 seconds by default).
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Reviewed-by: Sage Weil <sage@redhat.com>
No need to bifurcate wait now that we've got ceph_timeout_jiffies().
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Reviewed-by: Yan, Zheng <zyan@redhat.com>
- return -ETIMEDOUT instead of -EIO in case of timeout
- wait_event_interruptible_timeout() returns time left until timeout
and since it can be almost LONG_MAX we had better assign it to long
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Alex Elder <elder@linaro.org>
There are currently three libceph-level timeouts that the user can
specify on mount: mount_timeout, osd_idle_ttl and osdkeepalive. All of
these are in seconds and no checking is done on user input: negative
values are accepted, we multiply them all by HZ which may or may not
overflow, arbitrarily large jiffies then get added together, etc.
There is also a bug in the way mount_timeout=0 is handled. It's
supposed to mean "infinite timeout", but that's not how wait.h APIs
treat it and so __ceph_open_session() for example will busy loop
without much chance of being interrupted if none of ceph-mons are
there.
Fix all this by verifying user input, storing timeouts capped by
msecs_to_jiffies() in jiffies and using the new ceph_timeout_jiffies()
helper for all user-specified waits to handle infinite timeouts
correctly.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Previously we pre-allocate cap release messages for each caps. This
wastes lots of memory when there are large amount of caps. This patch
make the code not pre-allocate the cap release messages. Instead,
we add the corresponding ceph_cap struct to a list when releasing a
cap. Later when flush cap releases is needed, we allocate the cap
release messages dynamically.
Signed-off-by: Yan, Zheng <zyan@redhat.com>
When ceph inode's i_head_snapc is NULL, __ceph_mark_dirty_caps()
accesses snap realm's cached_context. So we need take read lock
of snap_rwsem.
Signed-off-by: Yan, Zheng <zyan@redhat.com>
when a snap notification contains no new snapshot, we can avoid
sending FLUSHSNAP message to MDS. But we still need to create
cap_snap in some case because it's required by write path and
page writeback path
Signed-off-by: Yan, Zheng <zyan@redhat.com>
In most cases that snap context is needed, we are holding
reference of CEPH_CAP_FILE_WR. So we can set ceph inode's
i_head_snapc when getting the CEPH_CAP_FILE_WR reference,
and make codes get snap context from i_head_snapc. This makes
the code simpler.
Another benefit of this change is that we can handle snap
notification more elegantly. Especially when snap context
is updated while someone else is doing write. The old queue
cap_snap code may set cap_snap's context to ether the old
context or the new snap context, depending on if i_head_snapc
is set. The new queue capp_snap code always set cap_snap's
context to the old snap context.
Signed-off-by: Yan, Zheng <zyan@redhat.com>
Cached_context in ceph_snap_realm is directly accessed by
uninline_data() and get_pool_perm(). This is racy in theory.
both uninline_data() and get_pool_perm() do not modify existing
object, they only create new object. So we can pass the empty
snap context to them. Unlike cached_context in ceph_snap_realm,
we do not need to protect the empty snap context.
Signed-off-by: Yan, Zheng <zyan@redhat.com>
This one sneaked in through vfs tree with commit 2b777c9dd9
("ceph_sync_read: stop poking into iov_iter guts").
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
NVDIMM namespaces, in addition to accepting "struct bio" based requests,
also have the capability to perform byte-aligned accesses. By default
only the bio/block interface is used. However, if another driver can
make effective use of the byte-aligned capability it can claim namespace
interface and use the byte-aligned ->rw_bytes() interface.
The BTT driver is the initial first consumer of this mechanism to allow
adding atomic sector update semantics to a pmem or blk namespace. This
patch is the sysfs infrastructure to allow configuring a BTT instance
for a namespace. Enabling that BTT and performing i/o is in a
subsequent patch.
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: Neil Brown <neilb@suse.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
It turned out that SIGP set-multi-threading can only be done once.
Therefore switching to a different MT level after switching to
sclp.mtid_prev in the dump case fails.
As a symptom specifying the "nosmt" parameter currently fails for
the kdump kernel and the kernel starts with multi-threading enabled.
So fix this and issue diag 308 subcode 1 call after collecting the
CPU states for the dump. Also enhance the diag308_reset() function to
be usable also with enabled lowcore protection and prefix register != 0.
After the reset it is possible to switch the MT level again. We have
to do the reset very early in order not to kill the already initialized
console. Therefore instead of kmalloc() the corresponding memblock
functions have to be used. To avoid copying the sclp cpu code into
sclp_early, we now use the simple sigp loop method for CPU detection.
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
The SCLP interface to query, configure and deconfigure CPUs actually
operates on cores. For a machine without the multi-threading faciltiy
a CPU and a core are equivalent but starting with System z13 a core
can have multiple hardware threads, also referred to as logical CPUs.
To avoid confusion replace the word 'cpu' with 'core' in the SCLP
interface. Also replace MAX_CPU_ADDRESS with SCLP_MAX_CORES.
The core-id is an 8-bit field, the maximum thread id is in the range
0-31. The theoretical limit for the CPU address is therefore 8191.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
On a (theoretical) system where the read-cpu-info SCLP command does
not work but SMT is enabled, the sigp detection loop may not find
all configured cores. The maximum CPU address needs to be shifted
with smp_cpu_mt_shift.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
In case of request timeouts an AP queue reset will be triggered to
recover and reinitialize the AP queue. The previous behavior was an
immediate reset execution regardless of current/pending requests.
Due to newly changed firmware behavior the reset may be delayed, based
on the priority of pending request. The device driver's waiting time
frame was limited, hence it did not received the reset response. As a
consequence interrupts would not be enabled afterwards.
The RAPQ (queue reset) and AQIC (interrupt control) commands will be
treated fully asynchronous now. The device driver will check the reset and
interrupt states periodically, thus it can handle the reinitialization
properly.
Signed-off-by: Ingo Tuchscherer <ingo.tuchscherer@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
The REGSET_VX_LOW ELF notes should contain the lower 64 bit halfes of the
first sixteen 128 bit vector registers. Unfortunately currently we copy
the upper halfes.
Fix this and correctly copy the lower halfes.
Fixes: a62bc07392 ("s390/kdump: add support for vector extension")
Cc: stable@vger.kernel.org # 3.18+
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Currently all backward jumps crash for JITed s390x eBPF programs
with an illegal instruction program check and kernel panic. Because
for negative values the opcode of the jump instruction is overriden
by the negative branch offset an illegal instruction is generated
by the JIT:
000003ff802da378: c01100000002 lgfi %r1,2
000003ff802da37e: fffffff52065 unknown <-- illegal instruction
000003ff802da384: b904002e lgr %r2,%r14
So fix this and mask the offset in order not to damage the opcode.
Cc: stable@vger.kernel.org # 4.0+
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
User visible:
- Move toggling event logic from 'perf top' and into hists browser, allowing
freeze/unfreeze with event lists with more than one entry (Namhyung Kim)
- Add missing newlines when dumping PERF_RECORD_FINISHED_ROUND and
showing the Aggregated stats in 'perf report -D' (Adrian Hunter)
Infrastructure:
- Allow auxtrace data alignment (Adrian Hunter)
- Allow events with dot (Andi Kleen)
- Fix failure to 'perf probe' events on arm (He Kuang)
- Add testing for Makefile.perf (Jiri Olsa)
- Add test for make install with prefix (Jiri Olsa)
- Fix single target build dependency check (Jiri Olsa)
- Access thread_map entries via accessors, prep patch to hold more info per
entry, for ongoing 'perf stat --per-thread' work (Jiri Olsa)
- Use __weak definition from compiler.h (Sukadev Bhattiprolu)
- Split perf_pmu__new_alias() (Sukadev Bhattiprolu)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core
Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:
User visible changes:
- Move toggling event logic from 'perf top' and into hists browser, allowing
freeze/unfreeze with event lists with more than one entry (Namhyung Kim)
- Add missing newlines when dumping PERF_RECORD_FINISHED_ROUND and
showing the Aggregated stats in 'perf report -D' (Adrian Hunter)
Infrastructure changes:
- Allow auxtrace data alignment (Adrian Hunter)
- Allow events with dot (Andi Kleen)
- Fix failure to 'perf probe' events on arm (He Kuang)
- Add testing for Makefile.perf (Jiri Olsa)
- Add test for make install with prefix (Jiri Olsa)
- Fix single target build dependency check (Jiri Olsa)
- Access thread_map entries via accessors, prep patch to hold more info per
entry, for ongoing 'perf stat --per-thread' work (Jiri Olsa)
- Use __weak definition from compiler.h (Sukadev Bhattiprolu)
- Split perf_pmu__new_alias() (Sukadev Bhattiprolu)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
The Blocked flag indicates that a device has failed but that this
fact hasn't been recorded in the metadata yet. Writes to such
devices cannot be allowed until the metadata has been updated.
On a read-only array, the Blocked flag will never be cleared.
This prevents the device being removed from the array.
If the metadata is being handled by the kernel
(i.e. !mddev->external), then we can be sure that if the array is
switch to writable, then a metadata update will happen and will
record the failure. So we don't need the flag set.
If metadata is externally managed, it is upto the external manager
to clear the 'blocked' flag.
Reported-by: XiaoNi <xni@redhat.com>
Signed-off-by: NeilBrown <neilb@suse.de>
This error path retuns while still holding the lock - bad.
Fixes: 6791875e2e ("md: make reconfig_mutex optional for writes to md sysfs files.")
Cc: stable@vger.kernel.org (v4.0+)
Signed-off-by: NeilBrown <neilb@suse.com>
If ->private is set when ->run is called, it is assumed to be
a 'config' prepared as part of 'reshape'.
So it is important when we free that config, that we also clear ->private.
This is not often a problem as the mddev will normally be discarded
shortly after the config us freed.
However if an 'assemble' races with a final close, the assemble can use
the old mddev which has a stale ->private. This leads to any of
various sorts of crashes.
So clear ->private after calling ->free().
Reported-by: Nate Clark <nate@neworld.us>
Cc: stable@vger.kernel.org (v4.0+)
Fixes: afa0f557cb ("md: rename ->stop to ->free")
Signed-off-by: NeilBrown <neilb@suse.com>
Apparently the compiler does fine without it, but it feels safer and
clearer to add the missing attribute.
Signed-off-by: Jean Delvare <jdelvare@suse.de>
The dmi-sysfs module adds DMI table structures entries under
/sys/firmware/dmi/entries only, so rename documentation file to
sysfs-firmware-dmi-entries as more appropriate. Without renaming it's
confusing to differ this from sysfs-firmware-dmi-tables that adds raw
DMI table and actually adds "dmi" kobject.
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@globallogic.com>
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Some utils, like dmidecode and smbios, need to access SMBIOS entry
table area in order to get information like SMBIOS version, size, etc.
Currently it's done via /dev/mem. But for situation when /dev/mem
usage is disabled, the utils have to use dmi sysfs instead, which
doesn't represent SMBIOS entry and adds code/delay redundancy when direct
access for table is needed.
So this patch creates dmi/tables and adds SMBIOS entry point to allow
utils in question to work correctly without /dev/mem. Also patch adds
raw dmi table to simplify dmi table processing in user space, as
proposed by Jean Delvare.
Tested-by: Roy Franz <roy.franz@linaro.org>
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@globallogic.com>
Signed-off-by: Jean Delvare <jdelvare@suse.de>
The SMBIOS v3 entry points specify a maximum length for the DMI table,
not the exact length. Thus there may be garbage after the end-of-table
marker, which we don't want to export to user-space. Adjust dmi_len
when we find the end-of-table marker, so that only the actual table
payload is exported.
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Cc: Ivan Khoronzhuk <ivan.khoronzhuk@globallogic.com>
The "dmi_table" function looks like data instance, but it does DMI
table decode. This patch renames it to "dmi_decode_table" name as
more appropriate. That allows us to use "dmi_table" name for correct
purposes.
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@globallogic.com>
Signed-off-by: Jean Delvare <jdelvare@suse.de>
A 32-bit entry point to a DMI table says how many structures the table
contains. The SMBIOS specification explicitly says that end-of-table
markers should be ignored if they are not actually at the end of the
DMI table. So only honor the end-of-table marker for tables accessed
through 64-bit entry points, as they do not specify a structure count.
Fixes: fc43026278 ("dmi: add support for SMBIOS 3.0 64-bit entry point")
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Leif Lindholm <leif.lindholm@linaro.org>
Cc: Matt Fleming <matt.fleming@intel.com>
The widget power-save that was enabled in 4.1 kernel seems resulting
in the silent output on VIA codecs by some reason. Some widgets get
wrong power states.
As a quick fix, turn this flag off while keeping power_down_unused
flag. This will bring back to the state of 4.0.x.
Fixes: 688b12cc3c ('ALSA: hda - Use the new power control for VIA codecs')
Reported-and-tested-by: Harald Dunkel <harri@afaics.de>
Cc: <stable@vger.kernel.org> # v4.1
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Thinkpad X250, when attached to a dock, has two headphone outs but
no line out. Make sure we don't try to turn this into one headphone
and one line out (since that disables the headphone amp on the dock).
Alsa-info at http://www.alsa-project.org/db/?f=36f8764e1d782397928feec715d0ef90dfddd4c1
Cc: stable@vger.kernel.org
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
We keep collecting defconfig updates in a separate branch mostly to encourage
people to handle them separately and avoid conflicts between different topics.
Most of these are enablement of new SoCs, boards or drivers that have
come in, or minor config refreshes due to reorderings in Kconfig
files, etc. I.e. mostly minor churn of various kinds.
Conflicts: None
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Merge tag 'armsoc-defconfig' into test-merge
ARM: SoC: defconfig updates for v4.2
We keep collecting defconfig updates in a separate branch mostly to encourage
people to handle them separately and avoid conflicts between different topics.
Most of these are enablement of new SoCs, boards or drivers that have
come in, or minor config refreshes due to reorderings in Kconfig
files, etc. I.e. mostly minor churn of various kinds.
Conflicts: None
# gpg: Signature made Wed Jun 24 21:32:27 2015 PDT using RSA key ID D3FBC665
# gpg: Good signature from "Kevin Hilman <khilman@deeprootsystems.com>"
# gpg: aka "Kevin Hilman <khilman@linaro.org>"
# gpg: aka "Kevin Hilman <khilman@kernel.org>"
Some of these are for drivers/soc, where we're now putting
SoC-specific drivers these days. Some are for other driver subsystems
where we have received acks from the appropriate maintainers.
Some highlights:
- simple-mfd: document DT bindings and misc updates
- migrate mach-berlin to simple-mfd for clock, pinctrl and reset
- memory: support for Tegra132 SoC
- memory: introduce tegra EMC driver for scaling memory frequency
- misc. updates for ARM CCI and CCN busses
Conflicts:
arch/arm64/boot/dts/arm/juno-motherboard.dtsi
Trivial add/add conflict with our dt branch.
Resolution: take both sides.
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Merge tag 'armsoc-drivers' into test-merge
ARM: SoC: driver updates for v4.2
Some of these are for drivers/soc, where we're now putting
SoC-specific drivers these days. Some are for other driver subsystems
where we have received acks from the appropriate maintainers.
Some highlights:
- simple-mfd: document DT bindings and misc updates
- migrate mach-berlin to simple-mfd for clock, pinctrl and reset
- memory: support for Tegra132 SoC
- memory: introduce tegra EMC driver for scaling memory frequency
- misc. updates for ARM CCI and CCN busses
Conflicts:
arch/arm64/boot/dts/arm/juno-motherboard.dtsi
Trivial add/add conflict with our dt branch.
Resolution: take both sides.
# gpg: Signature made Wed Jun 24 21:32:17 2015 PDT using RSA key ID D3FBC665
# gpg: Good signature from "Kevin Hilman <khilman@deeprootsystems.com>"
# gpg: aka "Kevin Hilman <khilman@linaro.org>"
# gpg: aka "Kevin Hilman <khilman@kernel.org>"
# Conflicts:
# arch/arm64/boot/dts/arm/juno-motherboard.dtsi
As usual, quite a few device-tree updates in ARM land. There was ome
minor churn in DTs due to relicensing under a dual-license, and lots
of little additions of new peripherals, features etc, but nothing
really exciting to call to your attention. Some higlights, focsuing
on support for new SoCs and boards:
- AT91: new boards: Overkiz, Acme Systems' Arietta G25
- tegra: HDA support
- bcm: new platforms: Buffalo WXR-1900DHP, SmartRG SR400ac, ASUS RT-AC87U
- mvebu: new platforms: Compulab CM-A510, Armada 385-based Linksys
boards, DLink DNS-327L
- OMAP: new platforms: Baltos IR5221, LogicPD Torpedo, Toby-Churchill SL50
- ARM: added support for Juno r1 board
- sunxi: A33 SoC support; new boards: A23 EVB, SinA33, GA10H-A33, Mele A1000G
- imx: i.MX7D SoC support; new boards: Armadeus Systems APF6,
Gateworks GW5510, and aristainetos2 boards
- hisilicon: hi6220 SoC support; new boards: 96boards hikey
Conflicts: None
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Merge tag 'armsoc-dt' into test-merge
ARM: SoC: DT updates for v4.2
As usual, quite a few device-tree updates in ARM land. There was ome
minor churn in DTs due to relicensing under a dual-license, and lots
of little additions of new peripherals, features etc, but nothing
really exciting to call to your attention. Some higlights, focsuing
on support for new SoCs and boards:
- AT91: new boards: Overkiz, Acme Systems' Arietta G25
- tegra: HDA support
- bcm: new platforms: Buffalo WXR-1900DHP, SmartRG SR400ac, ASUS RT-AC87U
- mvebu: new platforms: Compulab CM-A510, Armada 385-based Linksys
boards, DLink DNS-327L
- OMAP: new platforms: Baltos IR5221, LogicPD Torpedo, Toby-Churchill SL50
- ARM: added support for Juno r1 board
- sunxi: A33 SoC support; new boards: A23 EVB, SinA33, GA10H-A33, Mele A1000G
- imx: i.MX7D SoC support; new boards: Armadeus Systems APF6,
Gateworks GW5510, and aristainetos2 boards
- hisilicon: hi6220 SoC support; new boards: 96boards hikey
Conflicts: None
# gpg: Signature made Wed Jun 24 21:32:14 2015 PDT using RSA key ID D3FBC665
# gpg: Good signature from "Kevin Hilman <khilman@deeprootsystems.com>"
# gpg: aka "Kevin Hilman <khilman@linaro.org>"
# gpg: aka "Kevin Hilman <khilman@kernel.org>"
Our SoC branch usually contains expanded support for new SoCs and
other core platform code. Some highlights from this round:
- sunxi: SMP support for A23 SoC
- socpga: big-endian support
- pxa: conversion to common clock framework
- bcm: SMP support for BCM63138
- imx: support new I.MX7D SoC
- zte: basic support for ZX296702 SoC
Conflicts:
arch/arm/mach-socfpga/core.h
Trivial remove/remove conflict with our cleanup branch.
Resolution: remove both sides
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Merge tag 'armsoc-soc' into test-merge
ARM: SoC: platform support for v4.2
Our SoC branch usually contains expanded support for new SoCs and
other core platform code. Some highlights from this round:
- sunxi: SMP support for A23 SoC
- socpga: big-endian support
- pxa: conversion to common clock framework
- bcm: SMP support for BCM63138
- imx: support new I.MX7D SoC
- zte: basic support for ZX296702 SoC
Conflicts:
arch/arm/mach-socfpga/core.h
Trivial remove/remove conflict with our cleanup branch.
Resolution: remove both sides
# gpg: Signature made Wed Jun 24 21:32:12 2015 PDT using RSA key ID D3FBC665
# gpg: Good signature from "Kevin Hilman <khilman@deeprootsystems.com>"
# gpg: aka "Kevin Hilman <khilman@linaro.org>"
# gpg: aka "Kevin Hilman <khilman@kernel.org>"
# Conflicts:
# arch/arm/mach-socfpga/core.h
A relatively small setup of cleanups this time around, and similar to last time
the bulk of it is removal of legacy board support:
- OMAP: removal of legacy (non-DT) booting for several platforms
- i.MX: remove some legacy board files
Conflicts: None
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Merge tag 'armsoc-cleanup' into test-merge
ARM: SoC cleanups for v4.2
A relatively small setup of cleanups this time around, and similar to last time
the bulk of it is removal of legacy board support:
- OMAP: removal of legacy (non-DT) booting for several platforms
- i.MX: remove some legacy board files
Conflicts: None
# gpg: Signature made Wed Jun 24 21:32:09 2015 PDT using RSA key ID D3FBC665
# gpg: Good signature from "Kevin Hilman <khilman@deeprootsystems.com>"
# gpg: aka "Kevin Hilman <khilman@linaro.org>"
# gpg: aka "Kevin Hilman <khilman@kernel.org>"
Clear pending interrupts before requesting interrupts and move
interrupt initialization after channels have been initialized.
This avoids a NULL pointer dereference panic when using kexec
while DMA requests were running.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
The XDMAC supports memset transfers, both over contiguous areas, and over
discontiguous areas through a LLI.
The current memset operation only supports contiguous memset for now, add some
support for it. Scatter-gathered memset will come eventually.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
