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2018-08-22h8300: remove unnecessary of_platform_populate callRob Herring
The DT core will call of_platform_populate, so it is not necessary for arch specific code to call it unless there are custom match entries, auxdata or parent device. Neither of those apply here, so remove the call. Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: uclinux-h8-devel@lists.sourceforge.jp Signed-off-by: Rob Herring <robh@kernel.org> Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
2018-08-22h8300: Correct signature of test_bit()Geert Uytterhoeven
mm/filemap.c: In function 'clear_bit_unlock_is_negative_byte': mm/filemap.c:1181:30: warning: passing argument 2 of 'test_bit' discards 'volatile' qualifier from pointer target type [-Wdiscarded-qualifiers] return test_bit(PG_waiters, mem); ^~~ In file included from include/linux/bitops.h:38, from include/linux/kernel.h:11, from include/linux/list.h:9, from include/linux/wait.h:7, from include/linux/wait_bit.h:8, from include/linux/fs.h:6, from include/linux/dax.h:5, from mm/filemap.c:14: arch/h8300/include/asm/bitops.h:69:57: note: expected 'const long unsigned int *' but argument is of type 'volatile void *' static inline int test_bit(int nr, const unsigned long *addr) ~~~~~~~~~~~~~~~~~~~~~^~~~ Make the bitmask pointed to by the "addr" parameter volatile to fix this, like is done on other architectures. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
2018-08-22h8300: irqchip: fix warningYoshinori Sato
Var "addr" type incorrect. It have interrupt controler register address. Type of void __iomem is correct. Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
2018-08-22h8300: switch to NO_BOOTMEMRob Herring
Commit 0fa1c579349f ("of/fdt: use memblock_virt_alloc for early alloc") inadvertently switched the DT unflattening allocations from memblock to bootmem which doesn't work because the unflattening happens before bootmem is initialized. Swapping the order of bootmem init and unflattening could also fix this, but removing bootmem is desired. So enable NO_BOOTMEM on h8300 like other architectures have done. Fixes: 0fa1c579349f ("of/fdt: use memblock_virt_alloc for early alloc") Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: uclinux-h8-devel@lists.sourceforge.jp Signed-off-by: Rob Herring <robh@kernel.org> Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
2018-08-22h8300: gcc-8.1 fixYoshinori Sato
Since gcc 8.1 does not generate an assignment statement to er 0, we had to explicitly write it. Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
2018-08-22h8300: Add missing output register.Yoshinori Sato
Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
2018-08-21ida: Change ida_get_new_above to return the idMatthew Wilcox
This calling convention makes more sense for the implementation as well as the callers. It even shaves 32 bytes off the compiled code size. Signed-off-by: Matthew Wilcox <willy@infradead.org>
2018-08-21ida: Remove old APIMatthew Wilcox
Delete ida_pre_get(), ida_get_new(), ida_get_new_above() and ida_remove() from the public API. Some of these functions still exist as internal helpers, but they should not be called by consumers. Signed-off-by: Matthew Wilcox <willy@infradead.org>
2018-08-21test_ida: check_ida_destroy and check_ida_allocMatthew Wilcox
Move these tests from the userspace test-suite to the kernel test-suite. Also convert check_ida_random to the new API. Signed-off-by: Matthew Wilcox <willy@infradead.org>
2018-08-21test_ida: Convert check_ida_conv to new APIMatthew Wilcox
Move as much as possible to kernel space; leave the parts in user space that rely on checking memory allocation failures to detect the transition between an exceptional entry and a bitmap. Signed-off-by: Matthew Wilcox <willy@infradead.org>
2018-08-21test_ida: Move ida_check_maxMatthew Wilcox
Convert to new API and move to kernel space. Signed-off-by: Matthew Wilcox <willy@infradead.org>
2018-08-21test_ida: Move ida_check_leafMatthew Wilcox
Convert to new API and move to kernel space. Take the opportunity to test the situation a little more thoroughly (ie at different offsets). Signed-off-by: Matthew Wilcox <willy@infradead.org>
2018-08-21idr-test: Convert ida_check_nomem to new APIMatthew Wilcox
We can't move this test to kernel space because there's no way to force kmalloc to fail. But we can use the new API and check this works when the test is in userspace. Signed-off-by: Matthew Wilcox <willy@infradead.org>
2018-08-21ida: Start new test_ida moduleMatthew Wilcox
Start transitioning the IDA tests into kernel space. Framework heavily cribbed from test_xarray.c. Signed-off-by: Matthew Wilcox <willy@infradead.org>
2018-08-21target/iscsi: Allocate session IDs from an IDAMatthew Wilcox
Since the session is never looked up by ID, we can use the more space-efficient IDA instead of the IDR. Signed-off-by: Matthew Wilcox <willy@infradead.org>
2018-08-21iscsi target: fix session creation failure handlingMike Christie
The problem is that iscsi_login_zero_tsih_s1 sets conn->sess early in iscsi_login_set_conn_values. If the function fails later like when we alloc the idr it does kfree(sess) and leaves the conn->sess pointer set. iscsi_login_zero_tsih_s1 then returns -Exyz and we then call iscsi_target_login_sess_out and access the freed memory. This patch has iscsi_login_zero_tsih_s1 either completely setup the session or completely tear it down, so later in iscsi_target_login_sess_out we can just check for it being set to the connection. Cc: stable@vger.kernel.org Fixes: 0957627a9960 ("iscsi-target: Fix sess allocation leak in...") Signed-off-by: Mike Christie <mchristi@redhat.com> Acked-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Matthew Wilcox <willy@infradead.org>
2018-08-21drm/vmwgfx: Convert to new IDA APIMatthew Wilcox
Reorder allocation to avoid an awkward lock/unlock/lock sequence. Simpler code due to being able to use ida_alloc_max(), even if we can't eliminate the driver's spinlock. Signed-off-by: Matthew Wilcox <willy@infradead.org> Reviewed-by: Sinclair Yeh <syeh@vmware.com>
2018-08-21dmaengine: Convert to new IDA APIMatthew Wilcox
Simpler and shorter code. Signed-off-by: Matthew Wilcox <willy@infradead.org> Acked-by: Vinod Koul <vkoul@kernel.org>
2018-08-21ppc: Convert vas ID allocation to new IDA APIMatthew Wilcox
Removes a custom spinlock and simplifies the code. Also fix an error where we could allocate one ID too many. Signed-off-by: Matthew Wilcox <willy@infradead.org>
2018-08-21media: Convert entity ID allocation to new IDA APIMatthew Wilcox
Removes a call to ida_pre_get(). Signed-off-by: Matthew Wilcox <willy@infradead.org> Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com> Acked-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-08-21ppc: Convert mmu context allocation to new IDA APIMatthew Wilcox
ida_alloc_range is the perfect fit for this use case. Eliminates a custom spinlock, a call to ida_pre_get and a local check for the allocated ID exceeding a maximum. Signed-off-by: Matthew Wilcox <willy@infradead.org> Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
2018-08-21Convert net_namespace to new IDA APIMatthew Wilcox
Signed-off-by: Matthew Wilcox <willy@infradead.org>
2018-08-21cb710: Convert to new IDA APIMatthew Wilcox
Eliminates the custom spinlock and the call to ida_pre_get. Signed-off-by: Matthew Wilcox <willy@infradead.org> Acked-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
2018-08-21rsxx: Convert to new IDA APIMatthew Wilcox
Eliminate the custom spinlock and the call to ida_pre_get. Also add a call to ida_free() in the card remove routine, which I believe fixes a bug in this driver. Signed-off-by: Matthew Wilcox <willy@infradead.org>
2018-08-21osd: Convert to new IDA APIMatthew Wilcox
Slightly simpler code. Signed-off-by: Matthew Wilcox <willy@infradead.org>
2018-08-21sd: Convert to new IDA APIMatthew Wilcox
Allows us to remove an explicit spinlock. Signed-off-by: Matthew Wilcox <willy@infradead.org>
2018-08-21devpts: Convert to new IDA APIMatthew Wilcox
ida_alloc_max() matches what this driver wants to do. Also removes a call to ida_pre_get(). We no longer need the protection of the mutex, so convert pty_count to an atomic_t and remove the mutex entirely. Signed-off-by: Matthew Wilcox <willy@infradead.org>
2018-08-21fs: Convert namespace IDAs to new APIMatthew Wilcox
We don't need to keep track of the starting value; the IDA is efficient. Signed-off-by: Matthew Wilcox <willy@infradead.org>
2018-08-21fs: Convert unnamed_dev_ida to new APIMatthew Wilcox
The new API is much easier for this user. Also add kerneldoc for get_anon_bdev(). Signed-off-by: Matthew Wilcox <willy@infradead.org>
2018-08-21mtip32xx: Convert to new IDA APIMatthew Wilcox
Removes a use of ida_pre_get() and a personalised spinlock. Signed-off-by: Matthew Wilcox <willy@infradead.org> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
2018-08-21ida: Add new APIMatthew Wilcox
Add ida_alloc(), ida_alloc_min(), ida_alloc_max(), ida_alloc_range() and ida_free(). The ida_alloc_max() and ida_alloc_range() functions differ from ida_simple_get() in that they take an inclusive 'max' parameter instead of an exclusive 'end' parameter. Callers are about evenly split whether they'd like inclusive or exclusive parameters and 'max' is easier to document than 'end'. Change the IDA allocation to first attempt to allocate a bit using existing memory, and only allocate memory afterwards. Also change the behaviour of 'min' > INT_MAX from being a BUG() to returning -ENOSPC. Leave compatibility wrappers in place for ida_simple_get() and ida_simple_remove() to avoid changing all callers. Signed-off-by: Matthew Wilcox <willy@infradead.org>
2018-08-21ida: Lock the IDA in ida_destroyMatthew Wilcox
The user has no need to handle locking between ida_simple_get() and ida_simple_remove(). They shouldn't be forced to think about whether ida_destroy() might be called at the same time as any of their other IDA manipulation calls. Improve the documnetation while I'm in here. Signed-off-by: Matthew Wilcox <willy@infradead.org>
2018-08-21radix-tree: Fix UBSAN warningMatthew Wilcox
get_slot_offset() can be called with a NULL 'parent' argument. In this case, the calculated value will not be used, but calculating it is undefined. Rather than fixing the caller (__radix_tree_delete) to not call get_slot_offset(), make get_slot_offset() robust against being called with a NULL parent. Signed-off-by: Matthew Wilcox <willy@infradead.org>
2018-08-21radix tree test suite: Enable ubsanMatthew Wilcox
Add support for the undefined behaviour sanitizer and fix the bugs that ubsan pointed out. Nothing major, and all in the test suite, not the code. Signed-off-by: Matthew Wilcox <willy@infradead.org>
2018-08-21radix tree test suite: Fix compilationMatthew Wilcox
An include of xarray.h was added to lib/idr.c without updating the test suite. Signed-off-by: Matthew Wilcox <willy@infradead.org>
2018-08-21Merge tag 'fuse-update-4.19' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse Pull fuse update from Miklos Szeredi: "Various bug fixes and cleanups" * tag 'fuse-update-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse: fuse: reduce allocation size for splice_write fuse: use kvmalloc to allocate array of pipe_buffer structs. fuse: convert last timespec use to timespec64 fs: fuse: Adding new return type vm_fault_t fuse: simplify fuse_abort_conn() fuse: Add missed unlock_page() to fuse_readpages_fill() fuse: Don't access pipe->buffers without pipe_lock() fuse: fix initial parallel dirops fuse: Fix oops at process_init_reply() fuse: umount should wait for all requests fuse: fix unlocked access to processing queue fuse: fix double request_end()
2018-08-21Merge tag 'ovl-update-4.19' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs Pull overlayfs updates from Miklos Szeredi: "This contains two new features: - Stack file operations: this allows removal of several hacks from the VFS, proper interaction of read-only open files with copy-up, possibility to implement fs modifying ioctls properly, and others. - Metadata only copy-up: when file is on lower layer and only metadata is modified (except size) then only copy up the metadata and continue to use the data from the lower file" * tag 'ovl-update-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs: (66 commits) ovl: Enable metadata only feature ovl: Do not do metacopy only for ioctl modifying file attr ovl: Do not do metadata only copy-up for truncate operation ovl: add helper to force data copy-up ovl: Check redirect on index as well ovl: Set redirect on upper inode when it is linked ovl: Set redirect on metacopy files upon rename ovl: Do not set dentry type ORIGIN for broken hardlinks ovl: Add an inode flag OVL_CONST_INO ovl: Treat metacopy dentries as type OVL_PATH_MERGE ovl: Check redirects for metacopy files ovl: Move some dir related ovl_lookup_single() code in else block ovl: Do not expose metacopy only dentry from d_real() ovl: Open file with data except for the case of fsync ovl: Add helper ovl_inode_realdata() ovl: Store lower data inode in ovl_inode ovl: Fix ovl_getattr() to get number of blocks from lower ovl: Add helper ovl_dentry_lowerdata() to get lower data dentry ovl: Copy up meta inode data from lowest data inode ovl: Modify ovl_lookup() and friends to lookup metacopy dentry ...
2018-08-21Merge tag 'xfs-4.19-merge-7' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linuxLinus Torvalds
Pull xfs fixes from Darrick Wong: - Fix an uninitialized variable - Don't use obviously garbage AG header counters to calculate transaction reservations - Trigger icount recalculation on bad icount when mounting * tag 'xfs-4.19-merge-7' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: iomap: fix WARN_ON_ONCE on uninitialized variable xfs: sanity check ag header values in xrep_calc_ag_resblks xfs: recalculate summary counters at mount time if icount is bad
2018-08-21Merge tag 'for-v4.19' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply Pull power supply and reset updates from Sebastian Reichel: - Improve support for TI bq20z75 in sbs-battery - Add Qualcomm PM8xxx reboot driver - Add cros-ec USBPD charger driver - Move ds2760 battery driver from w1 to power-supply and add DT support - Misc fixes * tag 'for-v4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: (28 commits) power: supply: bq27xxx: Update comments power: supply: max77693_charger: fix unintentional fall-through power: supply: mark expected switch fall-throughs power: supply: lego_ev3_battery: fix Vce offset power: supply: lego_ev3_battery: Don't ignore iio_read_channel_processed() return value power: supply: ds2760_battery: add devicetree probing power: supply: ds2760_battery: merge ds2760 supply driver with its w1 slave companion w1: core: match sub-nodes of bus masters in devicetree dt-bindings: w1: document bindings for ds2760 battery monitor dt-bindings: w1: document generic onewire bindings power: supply: adp5061: Fix a couple off by ones dt-bindings: power: reset: qcom: Add resin binding adp5061: New driver for ADP5061 I2C battery charger power: generic-adc-battery: check for duplicate properties copied from iio channels power: generic-adc-battery: fix out-of-bounds write when copying channel properties power: supply: axp288_charger: Fix initial constant_charge_current value power: supply: ab8500: stop using getnstimeofday64() power: gemini-poweroff: Avoid more spurious poweroffs power: vexpress: fix corruption in notifier registration power: remove possible deadlock when unregistering power_supply ...
2018-08-21Merge branch 'i2c/for-4.19' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux Pull i2c updates from Wolfram Sang: - the core has now a lockless variant of i2c_smbus_xfer. Some open coded versions of this got removed in drivers. This also enables proper SCCB support in regmap. - locking got a more precise naming. i2c_{un}lock_adapter() had to go, and we know use i2c_lock_bus() consistently with flags like I2C_LOCK_ROOT_ADAPTER and I2C_LOCK_SEGMENT to avoid ambiguity. - the gpio fault injector got a new delicate testcase - the bus recovery procedure got fixed to handle the new testcase correctly - a new quirk flag for controllers not able to handle zero length messages together with driver updates to use it - new drivers: FSI bus attached I2C masters, GENI I2C controller, Owl family S900 - and a good set of driver improvements and bugfixes * 'i2c/for-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (77 commits) i2c: rcar: implement STOP and REP_START according to docs i2c: rcar: refactor private flags i2c: core: ACPI: Make acpi_gsb_i2c_read_bytes() check i2c_transfer return value i2c: core: ACPI: Properly set status byte to 0 for multi-byte writes dt-bindings: i2c: rcar: Add r8a774a1 support dt-bindings: i2c: sh_mobile: Add r8a774a1 support i2c: imx: Simplify stopped state tracking i2c: imx: Fix race condition in dma read i2c: pasemi: remove hardcoded bus numbers on smbus i2c: designware: Add SPDX license tag i2c: designware: Convert to use struct i2c_timings i2c: core: Parse SDA hold time from firmware i2c: designware-pcidrv: Mark expected switch fall-through i2c: amd8111: Mark expected switch fall-through i2c: sh_mobile: use core to detect 'no zero length read' quirk i2c: xlr: use core to detect 'no zero length' quirk i2c: rcar: use core to detect 'no zero length' quirk i2c: stu300: use core to detect 'no zero length' quirk i2c: pmcmsp: use core to detect 'no zero length' quirk i2c: mxs: use core to detect 'no zero length' quirk ...
2018-08-21apparmor: fix an error code in __aa_create_ns()Dan Carpenter
We should return error pointers in this function. Returning NULL results in a NULL dereference in the caller. Fixes: 73688d1ed0b8 ("apparmor: refactor prepare_ns() and make usable from different views") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: John Johansen <john.johansen@canonical.com>
2018-08-21IB/ucm: fix UCM link errorArnd Bergmann
Building UCM with CONFIG_INFINIBAND_USER_ACCESS=m results in a set of link errors including: drivers/infiniband/core/ucm.o: In function `ib_ucm_event_handler': ucm.c:(.text+0x6dc): undefined reference to `ib_copy_path_rec_to_user' drivers/infiniband/core/ucma.o: In function `ucma_event_handler': ucma.c:(.text+0xdc0): undefined reference to `ib_copy_ah_attr_to_user' To get it to build-test again, this makes the option itself a tristate, which lets Kconfig figure out the dependency correctly. Fixes: 486edfb1039d ("IB/ucm: Fix compiling ucm.c") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-08-22vhost/scsi: increase VHOST_SCSI_PREALLOC_PROT_SGLS to 2048Greg Edwards
The current value of VHOST_SCSI_PREALLOC_PROT_SGLS is too small to accommodate larger I/Os, e.g. 16-32 MiB, when the VIRTIO_SCSI_F_T10_PI feature bit is negotiated and the backing store supports T10 PI. vhost-scsi rejects the command with errors like: [ 59.581317] vhost_scsi_calc_sgls: requested sgl_count: 1820 exceeds pre-allocated max_sgls: 512 Signed-off-by: Greg Edwards <gedwards@ddn.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-08-22vhost: allow vhost-scsi driver to be built-inGreg Edwards
It's useful to allow vhost-scsi to be built-in when testing vhost in L1 + L2 VMs and booting L1 VM with QEMU '-kernel' option. Signed-off-by: Greg Edwards <gedwards@ddn.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-08-22virtio: pci-legacy: Validate queue pfnSuzuki K Poulose
Legacy PCI over virtio uses a 32bit PFN for the queue. If the queue pfn is too large to fit in 32bits, which we could hit on arm64 systems with 52bit physical addresses (even with 64K page size), we simply miss out a proper link to the other side of the queue. Add a check to validate the PFN, rather than silently breaking the devices. Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Jason Wang <jasowang@redhat.com> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Christoffer Dall <cdall@kernel.org> Cc: Peter Maydel <peter.maydell@linaro.org> Cc: Jean-Philippe Brucker <jean-philippe.brucker@arm.com> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-08-22virtio: mmio-v1: Validate queue PFNSuzuki K Poulose
virtio-mmio with virtio-v1 uses a 32bit PFN for the queue. If the queue pfn is too large to fit in 32bits, which we could hit on arm64 systems with 52bit physical addresses (even with 64K page size), we simply miss out a proper link to the other side of the queue. Add a check to validate the PFN, rather than silently breaking the devices. Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Jason Wang <jasowang@redhat.com> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Christoffer Dall <cdall@kernel.org> Cc: Peter Maydel <peter.maydell@linaro.org> Cc: Jean-Philippe Brucker <jean-philippe.brucker@arm.com> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-08-22virtio_balloon: replace oom notifier with shrinkerWei Wang
The OOM notifier is getting deprecated to use for the reasons: - As a callout from the oom context, it is too subtle and easy to generate bugs and corner cases which are hard to track; - It is called too late (after the reclaiming has been performed). Drivers with large amuont of reclaimable memory is expected to release them at an early stage of memory pressure; - The notifier callback isn't aware of oom contrains; Link: https://lkml.org/lkml/2018/7/12/314 This patch replaces the virtio-balloon oom notifier with a shrinker to release balloon pages on memory pressure. The balloon pages are given back to mm adaptively by returning the number of pages that the reclaimer is asking for (i.e. sc->nr_to_scan). Currently the max possible value of sc->nr_to_scan passed to the balloon shrinker is SHRINK_BATCH, which is 128. This is smaller than the limitation that only VIRTIO_BALLOON_ARRAY_PFNS_MAX (256) pages can be returned via one invocation of leak_balloon. But this patch still considers the case that SHRINK_BATCH or shrinker->batch could be changed to a value larger than VIRTIO_BALLOON_ARRAY_PFNS_MAX, which will need to do multiple invocations of leak_balloon. Historically, the feature VIRTIO_BALLOON_F_DEFLATE_ON_OOM has been used to release balloon pages on OOM. We continue to use this feature bit for the shrinker, so the shrinker is only registered when this feature bit has been negotiated with host. Signed-off-by: Wei Wang <wei.w.wang@intel.com> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-08-22virtio-balloon: kzalloc the vb structWei Wang
Zero all the vb fields at alloaction, so that we don't need to zero-initialize each field one by one later. Signed-off-by: Wei Wang <wei.w.wang@intel.com> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-08-22virtio-balloon: remove BUG() in init_vqsWei Wang
It's a bit overkill to use BUG when failing to add an entry to the stats_vq in init_vqs. So remove it and just return the error to the caller to bail out nicely. Signed-off-by: Wei Wang <wei.w.wang@intel.com> Cc: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-08-21Merge branch 'siginfo-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace Pull core signal handling updates from Eric Biederman: "It was observed that a periodic timer in combination with a sufficiently expensive fork could prevent fork from every completing. This contains the changes to remove the need for that restart. This set of changes is split into several parts: - The first part makes PIDTYPE_TGID a proper pid type instead something only for very special cases. The part starts using PIDTYPE_TGID enough so that in __send_signal where signals are actually delivered we know if the signal is being sent to a a group of processes or just a single process. - With that prep work out of the way the logic in fork is modified so that fork logically makes signals received while it is running appear to be received after the fork completes" * 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace: (22 commits) signal: Don't send signals to tasks that don't exist signal: Don't restart fork when signals come in. fork: Have new threads join on-going signal group stops fork: Skip setting TIF_SIGPENDING in ptrace_init_task signal: Add calculate_sigpending() fork: Unconditionally exit if a fatal signal is pending fork: Move and describe why the code examines PIDNS_ADDING signal: Push pid type down into complete_signal. signal: Push pid type down into __send_signal signal: Push pid type down into send_signal signal: Pass pid type into do_send_sig_info signal: Pass pid type into send_sigio_to_task & send_sigurg_to_task signal: Pass pid type into group_send_sig_info signal: Pass pid and pid type into send_sigqueue posix-timers: Noralize good_sigevent signal: Use PIDTYPE_TGID to clearly store where file signals will be sent pid: Implement PIDTYPE_TGID pids: Move the pgrp and session pid pointers from task_struct to signal_struct kvm: Don't open code task_pid in kvm_vcpu_ioctl pids: Compute task_tgid using signal->leader_pid ...
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