Linus Torvalds
6968e6f832
- Most attention this cycle went to optimizing blk-mq request-based DM ...
(dm-mq) that is used exclussively by DM multipath.
- A stable fix for dm-mq that eliminates excessive context switching
offers the biggest performance improvement (for both IOPs and
throughput).
- But more work is needed, during the next cycle, to reduce spinlock
contention in DM multipath on large NUMA systems.
- A stable fix for a NULL pointer seen when DM stats is enabled on a DM
multipath device that must requeue an IO due to path failure.
- A stable fix for DM snapshot to disallow the COW and origin devices
from being identical. This amounts to graceful failure in the face of
userspace error because these devices shouldn't ever be identical.
- Stable fixes for DM cache and DM thin provisioning to address crashes
seen if/when their respective metadata device experiences failures
that cause the transition to 'fail_io' mode.
- The DM cache 'mq' policy is now an alias for the 'smq' policy. The
'smq' policy proved to be consistently better than 'mq'. As such
'mq', with all its complex user-facing tunables, has been eliminated.
- Improve DM thin provisioning to consistently return -ENOSPC once the
thin-pool's data volume is out of space.
- Improve DM core to properly handle error propagation if
bio_integrity_clone() fails in clone_bio().
- Other small cleanups and improvements to DM core.
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Merge tag 'dm-4.6-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper updates from Mike Snitzer:
- Most attention this cycle went to optimizing blk-mq request-based DM
(dm-mq) that is used exclussively by DM multipath:
- A stable fix for dm-mq that eliminates excessive context
switching offers the biggest performance improvement (for both
IOPs and throughput).
- But more work is needed, during the next cycle, to reduce
spinlock contention in DM multipath on large NUMA systems.
- A stable fix for a NULL pointer seen when DM stats is enabled on a DM
multipath device that must requeue an IO due to path failure.
- A stable fix for DM snapshot to disallow the COW and origin devices
from being identical. This amounts to graceful failure in the face
of userspace error because these devices shouldn't ever be identical.
- Stable fixes for DM cache and DM thin provisioning to address crashes
seen if/when their respective metadata device experiences failures
that cause the transition to 'fail_io' mode.
- The DM cache 'mq' policy is now an alias for the 'smq' policy. The
'smq' policy proved to be consistently better than 'mq'. As such
'mq', with all its complex user-facing tunables, has been eliminated.
- Improve DM thin provisioning to consistently return -ENOSPC once the
thin-pool's data volume is out of space.
- Improve DM core to properly handle error propagation if
bio_integrity_clone() fails in clone_bio().
- Other small cleanups and improvements to DM core.
* tag 'dm-4.6-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: (41 commits)
dm: fix rq_end_stats() NULL pointer in dm_requeue_original_request()
dm thin: consistently return -ENOSPC if pool has run out of data space
dm cache: bump the target version
dm cache: make sure every metadata function checks fail_io
dm: add missing newline between DM_DEBUG_BLOCK_STACK_TRACING and DM_BUFIO
dm cache policy smq: clarify that mq registration failure was for 'mq'
dm: return error if bio_integrity_clone() fails in clone_bio()
dm thin metadata: don't issue prefetches if a transaction abort has failed
dm snapshot: disallow the COW and origin devices from being identical
dm cache: make the 'mq' policy an alias for 'smq'
dm: drop unnecessary assignment of md->queue
dm: reorder 'struct mapped_device' members to fix alignment and holes
dm: remove dummy definition of 'struct dm_table'
dm: add 'dm_numa_node' module parameter
dm thin metadata: remove needless newline from subtree_dec() DMERR message
dm mpath: cleanup reinstate_path() et al based on code review
dm mpath: remove __pgpath_busy forward declaration, rename to pgpath_busy
dm mpath: switch from 'unsigned' to 'bool' for flags where appropriate
dm round robin: use percpu 'repeat_count' and 'current_path'
dm path selector: remove 'repeat_count' return from .select_path hook
...
2016-03-16 17:26:37 -07:00
ceph: initial CEPH_FEATURE_FS_FILE_LAYOUT_V2 support
2016-03-04 21:00:37 +01:00
ARM: SoC multiplatform code changes for v4.5
2016-01-20 18:03:56 -08:00
crush: add chooseleaf_stable tunable
2016-02-04 18:25:55 +01:00
gpio: generic: make bgpio_pdata always visible
2016-01-13 16:00:32 +01:00
MIPS: Make smp CMP, CPS and MT use the new generic IPI functions
2016-02-25 10:56:58 +01:00
rtc: max77686: move initialisation of rtc regmap, irq chip locally
2016-03-14 17:08:13 +01:00
net/mlx4_core: Set UAR page size to 4KB regardless of system page size
2016-02-17 10:29:27 -05:00
net/mlx5e: Fix ethtool RX hash func configuration change
2016-03-02 14:37:25 -05:00
hwmon: (ntc_thermistor) Add support for ncpXXxh103
2016-03-05 06:25:34 -08:00
power: bq27xxx_battery: Restore device name
2016-02-21 20:49:34 +01:00
raid6/algos.c : bug fix : Add the missing definitions to the pq.h file
2016-01-21 14:47:08 -08:00
Merge remote-tracking branches 'regulator/topic/discharge', 'regulator/topic/fan53555', 'regulator/topic/gpio', 'regulator/topic/hi655x' and 'regulator/topic/lp872x' into regulator-next
2016-03-13 15:19:35 +07:00
sched/debug: Make schedstats a runtime tunable that is disabled by default
2016-02-09 11:54:23 +01:00
soc: ti: knav_dma: rename pad in struct knav_dma_desc to sw_data
2016-02-21 22:03:15 -05:00
Merge remote-tracking branches 'spi/topic/res', 'spi/topic/rockchip', 'spi/topic/sh', 'spi/topic/ti-qspi' and 'spi/topic/xilinx' into spi-next
2016-03-11 14:28:53 +07:00
Initial roundup of 4.5 merge window patches
2016-01-23 18:45:06 -08:00
USB patches for 4.5-rc1
2016-01-13 09:26:40 -08:00
libata: fix HDIO_GET_32BIT ioctl
2016-02-11 10:07:18 -05:00
mmc: atmel: get rid of struct mci_dma_data
2016-01-14 13:40:30 +01:00
atomic: Export fetch_or()
2016-02-13 15:34:28 +01:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
2016-01-17 19:13:15 -08:00
autofs4: fix string.h include in auto_dev-ioctl.h
2016-03-15 16:55:16 -07:00
autofs4: coding style fixes
2016-03-15 16:55:16 -07:00
MIPS: bcm963xx: Add Broadcom BCM963xx board nvram data structure
2016-01-24 03:47:37 +01:00
MIPS: bcm963xx: Update bcm_tag field image_sequence
2016-01-24 03:49:03 +01:00
block: don't optimize for non-cloned bio in bio_get_last_bvec()
2016-03-12 14:12:10 -07:00
block: fix blk_rq_get_max_sectors for driver private requests
2016-03-03 14:43:45 -07:00
arch: Introduce post-init read-only memory
2016-02-22 08:51:38 +01:00
cgroup: make sure a parent css isn't offlined before its children
2016-01-22 10:42:57 -05:00
Merge branch 'for-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
2016-01-12 19:20:32 -08:00
include/linux/cleancache.h: Clean up code
2016-01-27 09:10:29 -05:00
clockevents: Rename last parameter of clocks_calc_mult_shift() to maxsec
2016-01-27 12:38:03 +01:00
clocksource: Introduce clocksource_freq2mult()
2016-02-27 08:55:30 +01:00
Merge commit 'fixes.2015.02.23a' into core/rcu
2016-03-15 09:01:06 +01:00
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
2016-01-20 17:20:53 -08:00
printk: do cond_resched() between lines while outputting to consoles
2016-01-16 11:17:25 -08:00
rcu: Make CPU_DYING_IDLE an explicit call
2016-03-01 20:36:58 +01:00
Merge branch 'pm-cpufreq-governor' into pm-cpufreq
2016-03-10 20:46:03 +01:00
cpu/hotplug: Make wait for dead cpu completion based
2016-03-01 20:36:58 +01:00
kernel/cpu.c: make set_cpu_* static inlines
2016-01-20 17:09:18 -08:00
cpuset: make mm migration asynchronous
2016-01-22 10:22:46 -05:00
dax: move writeback calls into the filesystems
2016-02-27 10:28:52 -08:00
use ->d_seq to get coherency between ->d_inode and ->d_flags
2016-02-29 12:16:43 -05:00
PM / devfreq: Set the freq_table of devfreq device
2016-01-13 17:30:32 +09:00
dm snapshot: disallow the COW and origin devices from being identical
2016-03-10 17:12:09 -05:00
pty: make sure super_block is still valid in final /dev/tty close
2016-02-06 23:45:46 -08:00
dma-mapping: always provide the dma_map_ops based implementation
2016-01-20 17:09:18 -08:00
Merge branch 'mm-pat-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2016-03-14 16:31:41 -07:00
firmware: dmi_scan: Save SMBIOS Type 9 System Slots
2016-01-15 22:08:45 +01:00
efi: Make efivarfs entries immutable by default
2016-02-10 16:25:52 +00:00
err.h: add (missing) unlikely() to IS_ERR_OR_NULL()
2016-01-16 11:17:24 -08:00
mm: fault-inject take over bootstrap kmem_cache check
2016-03-15 16:55:16 -07:00
block: revert runtime dax control of the raw block device
2016-01-30 13:35:31 -08:00
Revert "fsnotify: destroy marks with call_srcu instead of dedicated thread"
2016-02-18 16:23:24 -08:00
sched/debug: Fix preempt_disable_ip recording for preempt_disable()
2016-02-29 09:53:10 +01:00
mm/compaction: speed up pageblock_pfn_to_page() when zone is contiguous
2016-03-15 16:55:16 -07:00
hrtimer: Revert CLOCK_MONOTONIC_RAW support
2016-03-03 11:11:12 +01:00
thp: change pmd_trans_huge_lock() interface to return ptl
2016-01-21 17:20:51 -08:00
hugetlb: fix compile error on tile
2016-01-15 17:56:32 -08:00
i2c: create builtin_i2c_driver to avoid registration boilerplate
2016-01-13 11:06:03 +01:00
asm-generic: Consolidate mark_rodata_ro()
2016-02-22 08:51:37 +01:00
iommu/vt-d: Clear PPR bit to ensure we get more page request interrupts
2016-02-15 12:42:38 +00:00
x86/ACPI/PCI: Recognize that Interrupt Line 255 means "not connected"
2016-03-09 01:23:35 +01:00
lib/iomap_copy.c: add __ioread32_copy()
2016-01-20 17:09:18 -08:00
iommu: Update struct iommu_ops comments
2016-01-29 12:34:29 +01:00
PCI changes for the v4.6 merge window:
2016-03-16 14:45:55 -07:00
Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2016-03-15 12:48:48 -07:00
genirq: Add a new generic IPI reservation code to irq core
2016-02-25 10:56:56 +01:00
iscsi_ibft: Add prefix-len attr and display netmask
2016-03-14 10:30:57 -04:00
kasan: add functions to clear stack poison
2016-03-09 15:43:42 -08:00
include/linux/kdev_t.h: remove new_valid_dev()
2016-01-16 11:17:23 -08:00
include/linux/kernel.h: change abs() macro so it uses consistent return type
2016-01-16 11:17:22 -08:00
kexec: move some memembers and definitions within the scope of CONFIG_KEXEC_FILE
2016-01-20 17:09:18 -08:00
KVM: Use simple waitqueue for vcpu->wq
2016-02-25 11:27:16 +01:00
kvm: rename pfn_t to kvm_pfn_t
2016-01-15 17:56:32 -08:00
sched/debug: Make schedstats a runtime tunable that is disabled by default
2016-02-09 11:54:23 +01:00
leds: core: avoid error message when a USB LED device is unplugged
2016-03-14 09:22:20 +01:00
libata: Align ata_device's id on a cacheline
2016-02-25 16:37:06 -05:00
nfit: update address range scrub commands to the acpi 6.1 format
2016-02-23 17:17:20 -08:00
lightnvm: allow to force mm initialization
2016-02-04 09:19:45 -07:00
list: kill list_force_poison()
2016-03-09 15:43:42 -08:00
mm: memcontrol: move kmem accounting code to CONFIG_MEMCG
2016-01-20 17:09:18 -08:00
kernel/locking/lockdep.c: convert hash tables to hlists
2016-02-11 18:35:48 -08:00
lz4: fix wrong compress buffer size for 64-bits
2016-01-20 17:09:18 -08:00
memblock: fix section mismatch
2016-01-15 17:56:32 -08:00
mm: remove unnecessary uses of lock_page_memcg()
2016-03-15 16:55:16 -07:00
memory-hotplug: add automatic onlining policy for the newly added memory
2016-03-15 16:55:16 -07:00
mm/compaction: speed up pageblock_pfn_to_page() when zone is contiguous
2016-03-15 16:55:16 -07:00
mm/mempolicy.c: convert the shared_policy lock to a rwlock
2016-01-14 16:00:49 -08:00
mm, dax, pmem: introduce {get|put}_dev_pagemap() for dax-gup
2016-01-15 17:56:32 -08:00
mm, page_owner: track and print last migrate reason
2016-03-15 16:55:16 -07:00
Merge branch 'akpm' (patches from Andrew)
2016-03-16 11:51:08 -07:00
mm: move lru_to_page to mm_inline.h
2016-01-14 16:00:49 -08:00
Merge branch 'x86/urgent' into x86/asm, to pick up fixes
2016-02-18 09:28:03 +01:00
mm, debug: move bad flags printing to bad_page()
2016-03-15 16:55:16 -07:00
mm/compaction: speed up pageblock_pfn_to_page() when zone is contiguous
2016-03-15 16:55:16 -07:00
modules: fix longstanding /proc/kallsyms vs module insertion race.
2016-02-03 16:58:15 +10:30
PCI changes for the v4.5 merge window:
2016-01-21 11:52:16 -08:00
net: make netdev_for_each_lower_dev safe for device removal
2016-02-19 15:29:26 -05:00
NFS client updates for Linux 4.5
2016-01-14 16:08:23 -08:00
nfs: fix nfs_size_to_loff_t
2016-02-08 15:20:01 -05:00
pnfs/blocklayout: fix a memeory leak when using,vmalloc_to_page
2016-02-17 11:44:45 -05:00
rcu: Make CPU_DYING_IDLE an explicit call
2016-03-01 20:36:58 +01:00
of: drop symbols declared by _OF_DECLARE() from modules
2016-01-25 08:35:50 -06:00
PCI: host: Add of_pci_get_host_bridge_resources() stub
2016-01-15 12:30:35 -06:00
mm: rework mapcount accounting to enable 4k mapping of THPs
2016-01-15 17:56:32 -08:00
mm, page_owner: track and print last migrate reason
2016-03-15 16:55:16 -07:00
mm, page_owner: dump page owner info from dump_page()
2016-03-15 16:55:16 -07:00
mm: simplify lock_page_memcg()
2016-03-15 16:55:16 -07:00
PCI: Consolidate PCI DMA constants and interfaces in linux/pci-dma-compat.h
2016-03-07 11:39:16 -06:00
PCI changes for the v4.6 merge window:
2016-03-16 14:45:55 -07:00
PCI: Add PCI_CLASS_SERIAL_USB_DEVICE definition
2016-03-15 08:52:28 -05:00
Merge branch 'timers-nohz-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2016-03-14 19:44:38 -07:00
mm: fix pfn_t vs highmem
2016-02-11 18:35:48 -08:00
mm: fix pfn_t vs highmem
2016-02-11 18:35:48 -08:00
pipe: limit the per-user amount of pages allocated in pipes
2016-01-19 19:25:21 -05:00
Power management and ACPI updates for v4.5-rc1
2016-01-12 20:25:09 -08:00
PM / Domains: remove old power on/off latencies
2016-02-15 23:18:15 +01:00
PM / OPP: Add dev_pm_opp_set_rate()
2016-02-10 01:11:54 +01:00
pmem: add wb_cache_pmem() to the PMEM API
2016-01-22 17:02:18 -08:00
mm/page_poisoning.c: allow for zero poisoning
2016-03-15 16:55:16 -07:00
posix-cpu-timers: Migrate to use new tick dependency mask model
2016-03-02 16:44:27 +01:00
time: Remove duplicated code in ktime_get_raw_and_real()
2016-03-02 17:13:02 -08:00
printk: help pr_debug and pr_devel to optimize out arguments
2016-01-16 11:17:29 -08:00
ptp: Add PTP_SYS_OFFSET_PRECISE for driver crosstimestamping
2016-03-03 14:23:43 -08:00
ptrace: use fsuid, fsgid, effective creds for fs access checks
2016-01-20 17:09:18 -08:00
spi: pxa2xx: Add support for both chip selects on Intel Braswell
2016-02-09 19:01:11 +00:00
radix-tree: fix oops after radix_tree_iter_retry
2016-02-05 18:10:40 -08:00
drivers: char: random: add get_random_long()
2016-02-27 10:28:52 -08:00
rbtree: use READ_ONCE in RB_EMPTY_ROOT
2016-01-20 17:09:18 -08:00
Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2016-03-15 13:50:29 -07:00
Merge remote-tracking branch 'regmap/topic/update-bits' into regmap-next
2016-03-05 21:30:41 +09:00
mm: replace vma_lock_anon_vma with anon_vma_lock_read/write
2016-02-05 18:10:40 -08:00
rtc: Add functions to set and read rtc offset
2016-03-14 17:08:15 +01:00
Power management and ACPI material for v4.6-rc1, part 1
2016-03-16 14:10:53 -07:00
ipc/shm.c: is_file_shm_hugepages() can be boolean
2016-01-20 17:09:18 -08:00
make sure that freeing shmem fast symlinks is RCU-delayed
2016-01-22 18:08:52 -05:00
mld, igmp: Fix reserved tailroom calculation
2016-03-03 15:41:07 -05:00
slub: convert SLAB_DEBUG_FREE to SLAB_CONSISTENCY_CHECKS
2016-03-15 16:55:16 -07:00
mm/slab: alternative implementation for DEBUG_SLAB_LEAK
2016-03-15 16:55:16 -07:00
mm/slub: support left redzone
2016-03-15 16:55:16 -07:00
rcu: Document unique-name limitation for DEFINE_STATIC_SRCU()
2016-02-23 19:59:55 -08:00
stmmac: Fix 'eth0: No PHY found' regression
2016-03-03 15:02:05 -05:00
wait.[ch]: Introduce the simple waitqueue (swait) implementation
2016-02-25 11:27:16 +01:00
mm: free swap cache aggressively if memcg swap is full
2016-01-20 17:09:18 -08:00
swiotlb: Make linux/swiotlb.h standalone includible
2016-01-20 17:29:52 -05:00
kmemcg: account certain kmem allocations to memcg
2016-01-14 16:00:49 -08:00
posix-cpu-timers: Migrate to use new tick dependency mask model
2016-03-02 16:44:27 +01:00
time: Add history to cross timestamp interface supporting slower devices
2016-03-02 17:13:17 -08:00
time: Add history to cross timestamp interface supporting slower devices
2016-03-02 17:13:17 -08:00
numa: remove stale node_has_online_mem() define
2016-01-18 14:49:33 -05:00
tracepoints: move trace_print_flags definitions to tracepoint-defs.h
2016-03-15 16:55:16 -07:00
tracepoints: move trace_print_flags definitions to tracepoint-defs.h
2016-03-15 16:55:16 -07:00
tracing: Fix check for cpu online when event is disabled
2016-03-09 11:58:41 -05:00
tty: Wait interruptibly for tty lock on reopen
2016-01-26 23:17:54 -08:00
lib/ucs2_string: Add ucs2 -> utf8 helper functions
2016-02-10 13:19:03 +00:00
virtio: make find_vqs() checkpatch.pl-friendly
2016-01-12 20:47:06 +02:00
virtio_ring: use virt_store_mb
2016-01-12 20:47:02 +02:00
mm: support madvise(MADV_FREE)
2016-01-15 17:56:32 -08:00
mm, vmalloc: remove VM_VPAGES
2016-01-14 16:00:49 -08:00
mm: memcontrol: hook up vmpressure to socket pressure
2016-01-14 16:00:49 -08:00
vmstat: make vmstat_updater deferrable again and shut down on idle
2016-01-14 16:00:49 -08:00
sched/wait: Fix wait_event_freezable() documentation
2016-02-24 09:09:45 +01:00
workqueue: skip flush dependency checks for legacy workqueues
2016-01-29 13:31:10 -05:00
writeback: flush inode cgroup wb switches instead of pinning super_block
2016-03-03 14:42:50 -07:00
