The patch below does not apply to the 4.4-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable(a)vger.kernel.org>.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
>From 95d6c0857e54b788982746071130d822a795026b Mon Sep 17 00:00:00 2001
From: "Rafael J. Wysocki" <rafael.j.wysocki(a)intel.com>
Date: Wed, 18 Jul 2018 13:38:37 +0200
Subject: [PATCH] cpufreq: intel_pstate: Register when ACPI PCCH is present
Currently, intel_pstate doesn't register if _PSS is not present on
HP Proliant systems, because it expects the firmware to take over
CPU performance scaling in that case. However, if ACPI PCCH is
present, the firmware expects the kernel to use it for CPU
performance scaling and the pcc-cpufreq driver is loaded for that.
Unfortunately, the firmware interface used by that driver is not
scalable for fundamental reasons, so pcc-cpufreq is way suboptimal
on systems with more than just a few CPUs. In fact, it is better to
avoid using it at all.
For this reason, modify intel_pstate to look for ACPI PCCH if _PSS
is not present and register if it is there. Also prevent the
pcc-cpufreq driver from trying to initialize itself if intel_pstate
has been registered already.
Fixes: fbbcdc0744da (intel_pstate: skip the driver if ACPI has power mgmt option)
Reported-by: Andreas Herrmann <aherrmann(a)suse.com>
Reviewed-by: Andreas Herrmann <aherrmann(a)suse.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada(a)linux.intel.com>
Tested-by: Andreas Herrmann <aherrmann(a)suse.com>
Cc: 4.16+ <stable(a)vger.kernel.org> # 4.16+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki(a)intel.com>
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index ece120da3353..3c3971256130 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -2394,6 +2394,18 @@ static bool __init intel_pstate_no_acpi_pss(void)
return true;
}
+static bool __init intel_pstate_no_acpi_pcch(void)
+{
+ acpi_status status;
+ acpi_handle handle;
+
+ status = acpi_get_handle(NULL, "\\_SB", &handle);
+ if (ACPI_FAILURE(status))
+ return true;
+
+ return !acpi_has_method(handle, "PCCH");
+}
+
static bool __init intel_pstate_has_acpi_ppc(void)
{
int i;
@@ -2453,7 +2465,10 @@ static bool __init intel_pstate_platform_pwr_mgmt_exists(void)
switch (plat_info[idx].data) {
case PSS:
- return intel_pstate_no_acpi_pss();
+ if (!intel_pstate_no_acpi_pss())
+ return false;
+
+ return intel_pstate_no_acpi_pcch();
case PPC:
return intel_pstate_has_acpi_ppc() && !force_load;
}
diff --git a/drivers/cpufreq/pcc-cpufreq.c b/drivers/cpufreq/pcc-cpufreq.c
index 3f0ce2ae35ee..0c56c9759672 100644
--- a/drivers/cpufreq/pcc-cpufreq.c
+++ b/drivers/cpufreq/pcc-cpufreq.c
@@ -580,6 +580,10 @@ static int __init pcc_cpufreq_init(void)
{
int ret;
+ /* Skip initialization if another cpufreq driver is there. */
+ if (cpufreq_get_current_driver())
+ return 0;
+
if (acpi_disabled)
return 0;
The patch below does not apply to the 4.9-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable(a)vger.kernel.org>.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
>From 95d6c0857e54b788982746071130d822a795026b Mon Sep 17 00:00:00 2001
From: "Rafael J. Wysocki" <rafael.j.wysocki(a)intel.com>
Date: Wed, 18 Jul 2018 13:38:37 +0200
Subject: [PATCH] cpufreq: intel_pstate: Register when ACPI PCCH is present
Currently, intel_pstate doesn't register if _PSS is not present on
HP Proliant systems, because it expects the firmware to take over
CPU performance scaling in that case. However, if ACPI PCCH is
present, the firmware expects the kernel to use it for CPU
performance scaling and the pcc-cpufreq driver is loaded for that.
Unfortunately, the firmware interface used by that driver is not
scalable for fundamental reasons, so pcc-cpufreq is way suboptimal
on systems with more than just a few CPUs. In fact, it is better to
avoid using it at all.
For this reason, modify intel_pstate to look for ACPI PCCH if _PSS
is not present and register if it is there. Also prevent the
pcc-cpufreq driver from trying to initialize itself if intel_pstate
has been registered already.
Fixes: fbbcdc0744da (intel_pstate: skip the driver if ACPI has power mgmt option)
Reported-by: Andreas Herrmann <aherrmann(a)suse.com>
Reviewed-by: Andreas Herrmann <aherrmann(a)suse.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada(a)linux.intel.com>
Tested-by: Andreas Herrmann <aherrmann(a)suse.com>
Cc: 4.16+ <stable(a)vger.kernel.org> # 4.16+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki(a)intel.com>
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index ece120da3353..3c3971256130 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -2394,6 +2394,18 @@ static bool __init intel_pstate_no_acpi_pss(void)
return true;
}
+static bool __init intel_pstate_no_acpi_pcch(void)
+{
+ acpi_status status;
+ acpi_handle handle;
+
+ status = acpi_get_handle(NULL, "\\_SB", &handle);
+ if (ACPI_FAILURE(status))
+ return true;
+
+ return !acpi_has_method(handle, "PCCH");
+}
+
static bool __init intel_pstate_has_acpi_ppc(void)
{
int i;
@@ -2453,7 +2465,10 @@ static bool __init intel_pstate_platform_pwr_mgmt_exists(void)
switch (plat_info[idx].data) {
case PSS:
- return intel_pstate_no_acpi_pss();
+ if (!intel_pstate_no_acpi_pss())
+ return false;
+
+ return intel_pstate_no_acpi_pcch();
case PPC:
return intel_pstate_has_acpi_ppc() && !force_load;
}
diff --git a/drivers/cpufreq/pcc-cpufreq.c b/drivers/cpufreq/pcc-cpufreq.c
index 3f0ce2ae35ee..0c56c9759672 100644
--- a/drivers/cpufreq/pcc-cpufreq.c
+++ b/drivers/cpufreq/pcc-cpufreq.c
@@ -580,6 +580,10 @@ static int __init pcc_cpufreq_init(void)
{
int ret;
+ /* Skip initialization if another cpufreq driver is there. */
+ if (cpufreq_get_current_driver())
+ return 0;
+
if (acpi_disabled)
return 0;
Commit b1092c9af9ed ("bcache: allow quick writeback when backing idle")
allows the writeback rate to be faster if there is no I/O request on a
bcache device. It works well if there is only one bcache device attached
to the cache set. If there are many bcache devices attached to a cache
set, it may introduce performance regression because multiple faster
writeback threads of the idle bcache devices will compete the btree level
locks with the bcache device who have I/O requests coming.
This patch fixes the above issue by only permitting fast writebac when
all bcache devices attached on the cache set are idle. And if one of the
bcache devices has new I/O request coming, minimized all writeback
throughput immediately and let PI controller __update_writeback_rate()
to decide the upcoming writeback rate for each bcache device.
Also when all bcache devices are idle, limited wrieback rate to a small
number is wast of thoughput, especially when backing devices are slower
non-rotation devices (e.g. SATA SSD). This patch sets a max writeback
rate for each backing device if the whole cache set is idle. A faster
writeback rate in idle time means new I/Os may have more available space
for dirty data, and people may observe a better write performance then.
Please note bcache may change its cache mode in run time, and this patch
still works if the cache mode is switched from writeback mode and there
is still dirty data on cache.
Fixes: Commit b1092c9af9ed ("bcache: allow quick writeback when backing idle")
Cc: stable(a)vger.kernel.org #4.16+
Signed-off-by: Coly Li <colyli(a)suse.de>
Cc: Michael Lyle <mlyle(a)lyle.org>
---
drivers/md/bcache/bcache.h | 9 +---
drivers/md/bcache/request.c | 42 ++++++++++++++-
drivers/md/bcache/sysfs.c | 14 +++--
drivers/md/bcache/util.c | 2 +-
drivers/md/bcache/util.h | 2 +-
drivers/md/bcache/writeback.c | 98 +++++++++++++++++++++++++----------
6 files changed, 126 insertions(+), 41 deletions(-)
diff --git a/drivers/md/bcache/bcache.h b/drivers/md/bcache/bcache.h
index d6bf294f3907..f7451e8be03c 100644
--- a/drivers/md/bcache/bcache.h
+++ b/drivers/md/bcache/bcache.h
@@ -328,13 +328,6 @@ struct cached_dev {
*/
atomic_t has_dirty;
- /*
- * Set to zero by things that touch the backing volume-- except
- * writeback. Incremented by writeback. Used to determine when to
- * accelerate idle writeback.
- */
- atomic_t backing_idle;
-
struct bch_ratelimit writeback_rate;
struct delayed_work writeback_rate_update;
@@ -514,6 +507,8 @@ struct cache_set {
struct cache_accounting accounting;
unsigned long flags;
+ atomic_t idle_counter;
+ atomic_t at_max_writeback_rate;
struct cache_sb sb;
diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c
index ae67f5fa8047..fe45f561a054 100644
--- a/drivers/md/bcache/request.c
+++ b/drivers/md/bcache/request.c
@@ -1104,6 +1104,34 @@ static void detached_dev_do_request(struct bcache_device *d, struct bio *bio)
/* Cached devices - read & write stuff */
+static void quit_max_writeback_rate(struct cache_set *c)
+{
+ int i;
+ struct bcache_device *d;
+ struct cached_dev *dc;
+
+ mutex_lock(&bch_register_lock);
+
+ for (i = 0; i < c->devices_max_used; i++) {
+ if (!c->devices[i])
+ continue;
+
+ if (UUID_FLASH_ONLY(&c->uuids[i]))
+ continue;
+
+ d = c->devices[i];
+ dc = container_of(d, struct cached_dev, disk);
+ /*
+ * set writeback rate to default minimum value,
+ * then let update_writeback_rate() to decide the
+ * upcoming rate.
+ */
+ atomic64_set(&dc->writeback_rate.rate, 1);
+ }
+
+ mutex_unlock(&bch_register_lock);
+}
+
static blk_qc_t cached_dev_make_request(struct request_queue *q,
struct bio *bio)
{
@@ -1119,7 +1147,19 @@ static blk_qc_t cached_dev_make_request(struct request_queue *q,
return BLK_QC_T_NONE;
}
- atomic_set(&dc->backing_idle, 0);
+ if (d->c) {
+ atomic_set(&d->c->idle_counter, 0);
+ /*
+ * If at_max_writeback_rate of cache set is true and new I/O
+ * comes, quit max writeback rate of all cached devices
+ * attached to this cache set, and set at_max_writeback_rate
+ * to false.
+ */
+ if (unlikely(atomic_read(&d->c->at_max_writeback_rate) == 1)) {
+ atomic_set(&d->c->at_max_writeback_rate, 0);
+ quit_max_writeback_rate(d->c);
+ }
+ }
generic_start_io_acct(q, rw, bio_sectors(bio), &d->disk->part0);
bio_set_dev(bio, dc->bdev);
diff --git a/drivers/md/bcache/sysfs.c b/drivers/md/bcache/sysfs.c
index 225b15aa0340..d719021bff81 100644
--- a/drivers/md/bcache/sysfs.c
+++ b/drivers/md/bcache/sysfs.c
@@ -170,7 +170,8 @@ SHOW(__bch_cached_dev)
var_printf(writeback_running, "%i");
var_print(writeback_delay);
var_print(writeback_percent);
- sysfs_hprint(writeback_rate, dc->writeback_rate.rate << 9);
+ sysfs_hprint(writeback_rate,
+ atomic64_read(&dc->writeback_rate.rate) << 9);
sysfs_hprint(io_errors, atomic_read(&dc->io_errors));
sysfs_printf(io_error_limit, "%i", dc->error_limit);
sysfs_printf(io_disable, "%i", dc->io_disable);
@@ -188,7 +189,8 @@ SHOW(__bch_cached_dev)
char change[20];
s64 next_io;
- bch_hprint(rate, dc->writeback_rate.rate << 9);
+ bch_hprint(rate,
+ atomic64_read(&dc->writeback_rate.rate) << 9);
bch_hprint(dirty, bcache_dev_sectors_dirty(&dc->disk) << 9);
bch_hprint(target, dc->writeback_rate_target << 9);
bch_hprint(proportional,dc->writeback_rate_proportional << 9);
@@ -255,8 +257,12 @@ STORE(__cached_dev)
sysfs_strtoul_clamp(writeback_percent, dc->writeback_percent, 0, 40);
- sysfs_strtoul_clamp(writeback_rate,
- dc->writeback_rate.rate, 1, INT_MAX);
+ if (attr == &sysfs_writeback_rate) {
+ int v;
+
+ sysfs_strtoul_clamp(writeback_rate, v, 1, INT_MAX);
+ atomic64_set(&dc->writeback_rate.rate, v);
+ }
sysfs_strtoul_clamp(writeback_rate_update_seconds,
dc->writeback_rate_update_seconds,
diff --git a/drivers/md/bcache/util.c b/drivers/md/bcache/util.c
index fc479b026d6d..84f90c3d996d 100644
--- a/drivers/md/bcache/util.c
+++ b/drivers/md/bcache/util.c
@@ -200,7 +200,7 @@ uint64_t bch_next_delay(struct bch_ratelimit *d, uint64_t done)
{
uint64_t now = local_clock();
- d->next += div_u64(done * NSEC_PER_SEC, d->rate);
+ d->next += div_u64(done * NSEC_PER_SEC, atomic64_read(&d->rate));
/* Bound the time. Don't let us fall further than 2 seconds behind
* (this prevents unnecessary backlog that would make it impossible
diff --git a/drivers/md/bcache/util.h b/drivers/md/bcache/util.h
index cced87f8eb27..7e17f32ab563 100644
--- a/drivers/md/bcache/util.h
+++ b/drivers/md/bcache/util.h
@@ -442,7 +442,7 @@ struct bch_ratelimit {
* Rate at which we want to do work, in units per second
* The units here correspond to the units passed to bch_next_delay()
*/
- uint32_t rate;
+ atomic64_t rate;
};
static inline void bch_ratelimit_reset(struct bch_ratelimit *d)
diff --git a/drivers/md/bcache/writeback.c b/drivers/md/bcache/writeback.c
index ad45ebe1a74b..72059f910230 100644
--- a/drivers/md/bcache/writeback.c
+++ b/drivers/md/bcache/writeback.c
@@ -49,6 +49,63 @@ static uint64_t __calc_target_rate(struct cached_dev *dc)
return (cache_dirty_target * bdev_share) >> WRITEBACK_SHARE_SHIFT;
}
+static bool set_at_max_writeback_rate(struct cache_set *c,
+ struct cached_dev *dc)
+{
+ int i, dirty_dc_nr = 0;
+ struct bcache_device *d;
+
+ mutex_lock(&bch_register_lock);
+ for (i = 0; i < c->devices_max_used; i++) {
+ if (!c->devices[i])
+ continue;
+ if (UUID_FLASH_ONLY(&c->uuids[i]))
+ continue;
+ d = c->devices[i];
+ dc = container_of(d, struct cached_dev, disk);
+ if (atomic_read(&dc->has_dirty))
+ dirty_dc_nr++;
+ }
+ mutex_unlock(&bch_register_lock);
+
+ /*
+ * Idle_counter is increased everytime when update_writeback_rate()
+ * is rescheduled in. If all backing devices attached to the same
+ * cache set has same dc->writeback_rate_update_seconds value, it
+ * is about 10 rounds of update_writeback_rate() is called on each
+ * backing device, then the code will fall through at set 1 to
+ * c->at_max_writeback_rate, and a max wrteback rate to each
+ * dc->writeback_rate.rate. This is not very accurate but works well
+ * to make sure the whole cache set has no new I/O coming before
+ * writeback rate is set to a max number.
+ */
+ if (atomic_inc_return(&c->idle_counter) < dirty_dc_nr * 10)
+ return false;
+
+ if (atomic_read(&c->at_max_writeback_rate) != 1)
+ atomic_set(&c->at_max_writeback_rate, 1);
+
+
+ atomic64_set(&dc->writeback_rate.rate, INT_MAX);
+
+ /* keep writeback_rate_target as existing value */
+ dc->writeback_rate_proportional = 0;
+ dc->writeback_rate_integral_scaled = 0;
+ dc->writeback_rate_change = 0;
+
+ /*
+ * Check c->idle_counter and c->at_max_writeback_rate agagain in case
+ * new I/O arrives during before set_at_max_writeback_rate() returns.
+ * Then the writeback rate is set to 1, and its new value should be
+ * decided via __update_writeback_rate().
+ */
+ if (atomic_read(&c->idle_counter) < dirty_dc_nr * 10 ||
+ !atomic_read(&c->at_max_writeback_rate))
+ return false;
+
+ return true;
+}
+
static void __update_writeback_rate(struct cached_dev *dc)
{
/*
@@ -104,8 +161,9 @@ static void __update_writeback_rate(struct cached_dev *dc)
dc->writeback_rate_proportional = proportional_scaled;
dc->writeback_rate_integral_scaled = integral_scaled;
- dc->writeback_rate_change = new_rate - dc->writeback_rate.rate;
- dc->writeback_rate.rate = new_rate;
+ dc->writeback_rate_change = new_rate -
+ atomic64_read(&dc->writeback_rate.rate);
+ atomic64_set(&dc->writeback_rate.rate, new_rate);
dc->writeback_rate_target = target;
}
@@ -138,9 +196,16 @@ static void update_writeback_rate(struct work_struct *work)
down_read(&dc->writeback_lock);
- if (atomic_read(&dc->has_dirty) &&
- dc->writeback_percent)
- __update_writeback_rate(dc);
+ if (atomic_read(&dc->has_dirty) && dc->writeback_percent) {
+ /*
+ * If the whole cache set is idle, set_at_max_writeback_rate()
+ * will set writeback rate to a max number. Then it is
+ * unncessary to update writeback rate for an idle cache set
+ * in maximum writeback rate number(s).
+ */
+ if (!set_at_max_writeback_rate(c, dc))
+ __update_writeback_rate(dc);
+ }
up_read(&dc->writeback_lock);
@@ -422,27 +487,6 @@ static void read_dirty(struct cached_dev *dc)
delay = writeback_delay(dc, size);
- /* If the control system would wait for at least half a
- * second, and there's been no reqs hitting the backing disk
- * for awhile: use an alternate mode where we have at most
- * one contiguous set of writebacks in flight at a time. If
- * someone wants to do IO it will be quick, as it will only
- * have to contend with one operation in flight, and we'll
- * be round-tripping data to the backing disk as quickly as
- * it can accept it.
- */
- if (delay >= HZ / 2) {
- /* 3 means at least 1.5 seconds, up to 7.5 if we
- * have slowed way down.
- */
- if (atomic_inc_return(&dc->backing_idle) >= 3) {
- /* Wait for current I/Os to finish */
- closure_sync(&cl);
- /* And immediately launch a new set. */
- delay = 0;
- }
- }
-
while (!kthread_should_stop() &&
!test_bit(CACHE_SET_IO_DISABLE, &dc->disk.c->flags) &&
delay) {
@@ -715,7 +759,7 @@ void bch_cached_dev_writeback_init(struct cached_dev *dc)
dc->writeback_running = true;
dc->writeback_percent = 10;
dc->writeback_delay = 30;
- dc->writeback_rate.rate = 1024;
+ atomic64_set(&dc->writeback_rate.rate, 1024);
dc->writeback_rate_minimum = 8;
dc->writeback_rate_update_seconds = WRITEBACK_RATE_UPDATE_SECS_DEFAULT;
--
2.17.1
This is the start of the stable review cycle for the 3.18.116 release.
There are 29 patches in this series, all will be posted as a response
to this one. If anyone has any issues with these being applied, please
let me know.
Responses should be made by Sun Jul 22 11:51:47 UTC 2018.
Anything received after that time might be too late.
The whole patch series can be found in one patch at:
https://www.kernel.org/pub/linux/kernel/v3.x/stable-review/patch-3.18.116-r…
or in the git tree and branch at:
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-3.18.y
and the diffstat can be found below.
thanks,
greg k-h
-------------
Pseudo-Shortlog of commits:
Greg Kroah-Hartman <gregkh(a)linuxfoundation.org>
Linux 3.18.116-rc1
Tetsuo Handa <penguin-kernel(a)I-love.SAKURA.ne.jp>
net/nfc: Avoid stalls when nfc_alloc_send_skb() returned NULL.
Santosh Shilimkar <santosh.shilimkar(a)oracle.com>
rds: avoid unenecessary cong_update in loop transport
Eric Biggers <ebiggers(a)google.com>
KEYS: DNS: fix parsing multiple options
Florian Westphal <fw(a)strlen.de>
netfilter: ebtables: reject non-bridge targets
Alex Vesker <valex(a)mellanox.com>
net/mlx5: Fix command interface race in polling mode
Konstantin Khlebnikov <khlebnikov(a)yandex-team.ru>
net_sched: blackhole: tell upper qdisc about dropped packets
Jason Wang <jasowang(a)redhat.com>
vhost_net: validate sock before trying to put its fd
Ilpo Järvinen <ilpo.jarvinen(a)helsinki.fi>
tcp: prevent bogus FRTO undos with non-SACK flows
Yuchung Cheng <ycheng(a)google.com>
tcp: fix Fast Open key endianness
Eric Dumazet <edumazet(a)google.com>
net: sungem: fix rx checksum support
Alex Vesker <valex(a)mellanox.com>
net/mlx5: Fix incorrect raw command length parsing
Eric Dumazet <edumazet(a)google.com>
net: dccp: switch rx_tstamp_last_feedback to monotonic clock
Eric Dumazet <edumazet(a)google.com>
net: dccp: avoid crash in ccid3_hc_rx_send_feedback()
Christian Lamparter <chunkeey(a)googlemail.com>
crypto: crypto4xx - fix crypto4xx_build_pdr, crypto4xx_build_sdr leak
Christian Lamparter <chunkeey(a)googlemail.com>
crypto: crypto4xx - remove bad list_del
Jonas Gorski <jonas.gorski(a)gmail.com>
bcm63xx_enet: do not write to random DMA channel on BCM6345
Jonas Gorski <jonas.gorski(a)gmail.com>
bcm63xx_enet: correct clock usage
Tetsuo Handa <penguin-kernel(a)I-love.SAKURA.ne.jp>
loop: remember whether sysfs_create_group() was done
Leon Romanovsky <leonro(a)mellanox.com>
RDMA/ucm: Mark UCM interface as BROKEN
Tetsuo Handa <penguin-kernel(a)I-love.SAKURA.ne.jp>
PM / hibernate: Fix oops at snapshot_write()
Theodore Ts'o <tytso(a)mit.edu>
loop: add recursion validation to LOOP_CHANGE_FD
Florian Westphal <fw(a)strlen.de>
netfilter: x_tables: initialise match/target check parameter struct
Linus Torvalds <torvalds(a)linux-foundation.org>
Fix up non-directory creation in SGID directories
Dan Carpenter <dan.carpenter(a)oracle.com>
xhci: xhci-mem: off by one in xhci_stream_id_to_ring()
Nico Sneck <snecknico(a)gmail.com>
usb: quirks: add delay quirks for Corsair Strafe
Johan Hovold <johan(a)kernel.org>
USB: serial: mos7840: fix status-register error handling
Jann Horn <jannh(a)google.com>
USB: yurex: fix out-of-bounds uaccess in read handler
Johan Hovold <johan(a)kernel.org>
USB: serial: keyspan_pda: fix modem-status error handling
Jann Horn <jannh(a)google.com>
ibmasm: don't write out of bounds in read handler
-------------
Diffstat:
Makefile | 4 +-
drivers/block/loop.c | 79 +++++++++++++++------------
drivers/block/loop.h | 1 +
drivers/crypto/amcc/crypto4xx_core.c | 23 ++++----
drivers/infiniband/Kconfig | 12 ++++
drivers/infiniband/core/Makefile | 4 +-
drivers/misc/ibmasm/ibmasmfs.c | 27 +--------
drivers/net/ethernet/broadcom/bcm63xx_enet.c | 34 +++++++++---
drivers/net/ethernet/mellanox/mlx5/core/cmd.c | 8 +--
drivers/net/ethernet/sun/sungem.c | 22 ++++----
drivers/usb/core/quirks.c | 4 ++
drivers/usb/host/xhci-mem.c | 2 +-
drivers/usb/misc/yurex.c | 23 ++------
drivers/usb/serial/keyspan_pda.c | 4 +-
drivers/usb/serial/mos7840.c | 3 +
drivers/vhost/net.c | 3 +-
fs/inode.c | 6 ++
kernel/power/user.c | 5 ++
net/bridge/netfilter/ebtables.c | 15 +++++
net/dccp/ccids/ccid3.c | 16 +++---
net/dns_resolver/dns_key.c | 28 ++++++----
net/ipv4/netfilter/ip_tables.c | 1 +
net/ipv4/sysctl_net_ipv4.c | 18 ++++--
net/ipv4/tcp_input.c | 9 +++
net/ipv6/netfilter/ip6_tables.c | 1 +
net/nfc/llcp_commands.c | 9 ++-
net/rds/loop.c | 1 +
net/rds/rds.h | 5 ++
net/rds/recv.c | 5 ++
net/sched/sch_blackhole.c | 2 +-
30 files changed, 228 insertions(+), 146 deletions(-)