Merge branch 'md-next' of https://git.kernel.org/pub/scm/linux/kernel/git/song/md into for-5.10/drivers

Pull MD updates from Song.

* 'md-next' of https://git.kernel.org/pub/scm/linux/kernel/git/son

Merge branch 'md-next' of https://git.kernel.org/pub/scm/linux/kernel/git/song/md into for-5.10/drivers

Pull MD updates from Song.

* 'md-next' of https://git.kernel.org/pub/scm/linux/kernel/git/song/md:
md/raid10: improve discard request for far layout
md/raid10: improve raid10 discard request
md/raid10: pull codes that wait for blocked dev into one function
md/raid10: extend r10bio devs to raid disks
md: add md_submit_discard_bio() for submitting discard bio
md: Simplify code with existing definition RESYNC_SECTORS in raid10.c
md/raid5: reallocate page array after setting new stripe_size
md/raid5: resize stripe_head when reshape array
md/raid5: let multiple devices of stripe_head share page
md/raid6: let async recovery function support different page offset
md/raid6: let syndrome computor support different page offset
md/raid5: convert to new xor compution interface
md/raid5: add new xor function to support different page offset
md/raid5: make async_copy_data() to support different page offset
md/raid5: add a new member of offset into r5dev
md: only calculate blocksize once and use i_blocksize()

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md/raid10: improve discard request for far layout

For far layout, the discard region is not continuous on disks. So it needs
far copies r10bio to cover all regions. It needs a way to know all r10bio

md/raid10: improve discard request for far layout

For far layout, the discard region is not continuous on disks. So it needs
far copies r10bio to cover all regions. It needs a way to know all r10bios
have finish or not. Similar with raid10_sync_request, only the first r10bio
master_bio records the discard bio. Other r10bios master_bio record the
first r10bio. The first r10bio can finish after other r10bios finish and
then return the discard bio.

Signed-off-by: Xiao Ni <xni@redhat.com>
Signed-off-by: Song Liu <songliubraving@fb.com>

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Merge branch 'master' into for-next

Sync with Linus' branch in order to be able to apply fixups
of more recent patches.

Merge branch 'for-next' into for-linus

Merge tag 'irqchip-fixes-5.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/urgent

Pull irqchip fixes from Marc Zyngier:

- Fix atomicity of affinity update in the G

Merge tag 'irqchip-fixes-5.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/urgent

Pull irqchip fixes from Marc Zyngier:

- Fix atomicity of affinity update in the GIC driver
- Don't sleep in atomic when waiting for a GICv4.1 RD to respond
- Fix a couple of typos in user-visible messages

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Merge tag 'v5.8-rc3' into arm/qcom

Linux 5.8-rc3

Backmerge remote-tracking branch 'drm/drm-next' into drm-misc-next

Some conflicts with ttm_bo->offset removal, but drm-misc-next needs updating to v5.8.

Signed-off-by: Maarten Lankhorst <maarten.la

Backmerge remote-tracking branch 'drm/drm-next' into drm-misc-next

Some conflicts with ttm_bo->offset removal, but drm-misc-next needs updating to v5.8.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>

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Merge drm/drm-next into drm-intel-next-queued

Catch up with upstream, in particular to get c1e8d7c6a7a6 ("mmap locking
API: convert mmap_sem comments").

Signed-off-by: Jani Nikula <jani.nikula@inte

Merge drm/drm-next into drm-intel-next-queued

Catch up with upstream, in particular to get c1e8d7c6a7a6 ("mmap locking
API: convert mmap_sem comments").

Signed-off-by: Jani Nikula <jani.nikula@intel.com>

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Merge tag 'v5.8-rc1' into regulator-5.8

Linux 5.8-rc1

Merge tag 'v5.8-rc1' into fixes

Linux 5.8-rc1

Merge v5.8-rc1 into drm-misc-fixes

Beginning a new release cycles for what will become v5.8. Updating
drm-misc-fixes accordingly.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>

Merge branch 'dt/schema-cleanups' into dt/linus

Merge branch 'x86/entry' into ras/core

to fixup conflicts in arch/x86/kernel/cpu/mce/core.c so MCE specific follow
up patches can be applied without creating a horrible merge conflict
afterwards.

Merge tag 'for-5.8/drivers-2020-06-01' of git://git.kernel.dk/linux-block

Pull block driver updates from Jens Axboe:
"On top of the core changes, here are the block driver changes for this
merge

Merge tag 'for-5.8/drivers-2020-06-01' of git://git.kernel.dk/linux-block

Pull block driver updates from Jens Axboe:
"On top of the core changes, here are the block driver changes for this
merge window:

- NVMe changes:
- NVMe over Fibre Channel protocol updates, which also reach
over to drivers/scsi/lpfc (James Smart)
- namespace revalidation support on the target (Anthony
Iliopoulos)
- gcc zero length array fix (Arnd Bergmann)
- nvmet cleanups (Chaitanya Kulkarni)
- misc cleanups and fixes (me, Keith Busch, Sagi Grimberg)
- use a SRQ per completion vector (Max Gurtovoy)
- fix handling of runtime changes to the queue count (Weiping
Zhang)
- t10 protection information support for nvme-rdma and
nvmet-rdma (Israel Rukshin and Max Gurtovoy)
- target side AEN improvements (Chaitanya Kulkarni)
- various fixes and minor improvements all over, icluding the
nvme part of the lpfc driver"

- Floppy code cleanup series (Willy, Denis)

- Floppy contention fix (Jiri)

- Loop CONFIGURE support (Martijn)

- bcache fixes/improvements (Coly, Joe, Colin)

- q->queuedata cleanups (Christoph)

- Get rid of ioctl_by_bdev (Christoph, Stefan)

- md/raid5 allocation fixes (Coly)

- zero length array fixes (Gustavo)

- swim3 task state fix (Xu)"

* tag 'for-5.8/drivers-2020-06-01' of git://git.kernel.dk/linux-block: (166 commits)
bcache: configure the asynchronous registertion to be experimental
bcache: asynchronous devices registration
bcache: fix refcount underflow in bcache_device_free()
bcache: Convert pr_<level> uses to a more typical style
bcache: remove redundant variables i and n
lpfc: Fix return value in __lpfc_nvme_ls_abort
lpfc: fix axchg pointer reference after free and double frees
lpfc: Fix pointer checks and comments in LS receive refactoring
nvme: set dma alignment to qword
nvmet: cleanups the loop in nvmet_async_events_process
nvmet: fix memory leak when removing namespaces and controllers concurrently
nvmet-rdma: add metadata/T10-PI support
nvmet: add metadata support for block devices
nvmet: add metadata/T10-PI support
nvme: add Metadata Capabilities enumerations
nvmet: rename nvmet_check_data_len to nvmet_check_transfer_len
nvmet: rename nvmet_rw_len to nvmet_rw_data_len
nvmet: add metadata characteristics for a namespace
nvme-rdma: add metadata/T10-PI support
nvme-rdma: introduce nvme_rdma_sgl structure
...

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Merge branch 'md-next' of git://git.kernel.org/pub/scm/linux/kernel/git/song/md into for-5.8/drivers

Pull MD changes from Song.

* 'md-next' of git://git.kernel.org/pub/scm/linux/kernel/git/song/md:

Merge branch 'md-next' of git://git.kernel.org/pub/scm/linux/kernel/git/song/md into for-5.8/drivers

Pull MD changes from Song.

* 'md-next' of git://git.kernel.org/pub/scm/linux/kernel/git/song/md:
md/raid1: Replace zero-length array with flexible-array
md: add a newline when printing parameter 'start_ro' by sysfs
md: stop using ->queuedata
md/raid1: release pending accounting for an I/O only after write-behind is also finished
md: remove redundant memalloc scope API usage
raid5: update code comment of scribble_alloc()
raid5: remove gfp flags from scribble_alloc()
md: use memalloc scope APIs in mddev_suspend()/mddev_resume()
md: remove the extra line for ->hot_add_disk
md: flush md_rdev_misc_wq for HOT_ADD_DISK case
md: don't flush workqueue unconditionally in md_open
md: add new workqueue for delete rdev
md: add checkings before flush md_misc_wq

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md/raid1: Replace zero-length array with flexible-array

The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variabl

md/raid1: Replace zero-length array with flexible-array

The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:

struct foo {
int stuff;
struct boo array[];
};

By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.

Also, notice that, dynamic memory allocations won't be affected by
this change:

"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]

sizeof(flexible-array-member) triggers a warning because flexible array
members have incomplete type[1]. There are some instances of code in
which the sizeof operator is being incorrectly/erroneously applied to
zero-length arrays and the result is zero. Such instances may be hiding
some bugs. So, this work (flexible-array member conversions) will also
help to get completely rid of those sorts of issues.

This issue was found with the help of Coccinelle.

[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 76497732932f ("cxgb3/l2t: Fix undefined behaviour")

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Song Liu <songliubraving@fb.com>

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Merge tag 'v4.20' into for-linus

Sync with mainline to get linux/overflow.h among other things.

Merge tag 'v4.20' into next

Merge with mainline to bring in the new APIs.

Merge drm/drm-next into drm-intel-next-queued

We need a backmerge to get DP_DPCD_REV_14 before we push other
i915 changes to dinq that could break compilation.

Signed-off-by: Rodrigo Vivi <rodrigo.

Merge drm/drm-next into drm-intel-next-queued

We need a backmerge to get DP_DPCD_REV_14 before we push other
i915 changes to dinq that could break compilation.

Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

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Merge tag 'v4.18-rc2' of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux into fbdev-for-next

Linux 4.18-rc2

Merge tag 'v4.18-rc2' into next-general

Merge to Linux 4.18-rc2 for security subsystem developers.

Merge branch 'linus' into x86/urgent

Required to queue a dependent fix.

Merge branches 'clk-warn', 'clk-core', 'clk-spear' and 'clk-qcom-msm8998' into clk-next

* clk-warn:
clk: Print the clock name and warning cause

* clk-core:
clk: Remove clk_init_cb typedef

* cl

Merge branches 'clk-warn', 'clk-core', 'clk-spear' and 'clk-qcom-msm8998' into clk-next

* clk-warn:
clk: Print the clock name and warning cause

* clk-core:
clk: Remove clk_init_cb typedef

* clk-spear:
clk: spear: fix WDT clock definition on SPEAr600

* clk-qcom-msm8998:
clk: qcom: Add MSM8998 Global Clock Control (GCC) driver

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Merge tag 'for-4.18/block-20180603' of git://git.kernel.dk/linux-block

Pull block updates from Jens Axboe:

- clean up how we pass around gfp_t and
blk_mq_req_flags_t (Christoph)

- prepare us

Merge tag 'for-4.18/block-20180603' of git://git.kernel.dk/linux-block

Pull block updates from Jens Axboe:

- clean up how we pass around gfp_t and
blk_mq_req_flags_t (Christoph)

- prepare us to defer scheduler attach (Christoph)

- clean up drivers handling of bounce buffers (Christoph)

- fix timeout handling corner cases (Christoph/Bart/Keith)

- bcache fixes (Coly)

- prep work for bcachefs and some block layer optimizations (Kent).

- convert users of bio_sets to using embedded structs (Kent).

- fixes for the BFQ io scheduler (Paolo/Davide/Filippo)

- lightnvm fixes and improvements (Matias, with contributions from Hans
and Javier)

- adding discard throttling to blk-wbt (me)

- sbitmap blk-mq-tag handling (me/Omar/Ming).

- remove the sparc jsflash block driver, acked by DaveM.

- Kyber scheduler improvement from Jianchao, making it more friendly
wrt merging.

- conversion of symbolic proc permissions to octal, from Joe Perches.
Previously the block parts were a mix of both.

- nbd fixes (Josef and Kevin Vigor)

- unify how we handle the various kinds of timestamps that the block
core and utility code uses (Omar)

- three NVMe pull requests from Keith and Christoph, bringing AEN to
feature completeness, file backed namespaces, cq/sq lock split, and
various fixes

- various little fixes and improvements all over the map

* tag 'for-4.18/block-20180603' of git://git.kernel.dk/linux-block: (196 commits)
blk-mq: update nr_requests when switching to 'none' scheduler
block: don't use blocking queue entered for recursive bio submits
dm-crypt: fix warning in shutdown path
lightnvm: pblk: take bitmap alloc. out of critical section
lightnvm: pblk: kick writer on new flush points
lightnvm: pblk: only try to recover lines with written smeta
lightnvm: pblk: remove unnecessary bio_get/put
lightnvm: pblk: add possibility to set write buffer size manually
lightnvm: fix partial read error path
lightnvm: proper error handling for pblk_bio_add_pages
lightnvm: pblk: fix smeta write error path
lightnvm: pblk: garbage collect lines with failed writes
lightnvm: pblk: rework write error recovery path
lightnvm: pblk: remove dead function
lightnvm: pass flag on graceful teardown to targets
lightnvm: pblk: check for chunk size before allocating it
lightnvm: pblk: remove unnecessary argument
lightnvm: pblk: remove unnecessary indirection
lightnvm: pblk: return NVM_ error on failed submission
lightnvm: pblk: warn in case of corrupted write buffer
...

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md: convert to bioset_init()/mempool_init()

Convert md to embedded bio sets.

Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>