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2019-06-03f2fs: Add option to limit required GC for checkpoint=disableDaniel Rosenberg6-26/+99
This extends the checkpoint option to allow checkpoint=disable:%u[%] This allows you to specify what how much of the disk you are willing to lose access to while mounting with checkpoint=disable. If the amount lost would be higher, the mount will return -EAGAIN. This can be given as a percent of total space, or in blocks. Currently, we need to run garbage collection until the amount of holes is smaller than the OVP space. With the new option, f2fs can mark space as unusable up front instead of requiring garbage collection until the number of holes is small enough. Signed-off-by: Daniel Rosenberg <drosen@google.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2019-06-03f2fs: Fix accounting for unusable blocksDaniel Rosenberg1-5/+10
Fixes possible underflows when dealing with unusable blocks. Signed-off-by: Daniel Rosenberg <drosen@google.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2019-06-03f2fs: Fix root reserved on remountDaniel Rosenberg1-1/+2
On a remount, you can currently set root reserved if it was not previously set. This can cause an underflow if reserved has been set to a very high value, since then root reserved + current reserved could be greater than user_block_count. inc_valid_block_count later subtracts out these values from user_block_count, causing an underflow. Signed-off-by: Daniel Rosenberg <drosen@google.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2019-06-03f2fs: Lower threshold for disable_cp_againDaniel Rosenberg1-3/+5
The existing threshold for allowable holes at checkpoint=disable time is too high. The OVP space contains reserved segments, which are always in the form of free segments. These must be subtracted from the OVP value. The current threshold is meant to be the maximum value of holes of a single type we can have and still guarantee that we can fill the disk without failing to find space for a block of a given type. If the disk is full, ignoring current reserved, which only helps us, the amount of unused blocks is equal to the OVP area. Of that, there are reserved segments, which must be free segments, and the rest of the ovp area, which can come from either free segments or holes. The maximum possible amount of holes is OVP-reserved. Now, consider the disk when mounting with checkpoint=disable. We must be able to fill all available free space with either data or node blocks. When we start with checkpoint=disable, holes are locked to their current type. Say we have H of one type of hole, and H+X of the other. We can fill H of that space with arbitrary typed blocks via SSR. For the remaining H+X blocks, we may not have any of a given block type left at all. For instance, if we were to fill the disk entirely with blocks of the type with fewer holes, the H+X blocks of the opposite type would not be used. If H+X > OVP-reserved, there would be more holes than could possibly exist, and we would have failed to find a suitable block earlier on, leading to a crash in update_sit_entry. If H+X <= OVP-reserved, then the holes end up effectively masked by the OVP region in this case. Signed-off-by: Daniel Rosenberg <drosen@google.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2019-05-30f2fs: fix sparse warningChao Yu2-3/+3
make C=2 CHECKFLAGS="-D__CHECK_ENDIAN__" CHECK dir.c dir.c:842:50: warning: cast from restricted __le32 CHECK node.c node.c:2759:40: warning: restricted __le32 degrades to integer Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2019-05-30f2fs: fix f2fs_show_options to show nodiscard mount optionSahitya Tummala1-0/+2
Fix f2fs_show_options to show nodiscard mount option. Signed-off-by: Sahitya Tummala <stummala@codeaurora.org> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2019-05-30f2fs: add error prints for debugging mount failureSahitya Tummala2-3/+7
Add error prints to get more details on the mount failure. Signed-off-by: Sahitya Tummala <stummala@codeaurora.org> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2019-05-30f2fs: fix to do sanity check on segment bitmap of LFS cursegChao Yu1-0/+39
As Jungyeon Reported in bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=203233 - Reproduces gcc poc_13.c ./run.sh f2fs - Kernel messages F2FS-fs (sdb): Bitmap was wrongly set, blk:4608 kernel BUG at fs/f2fs/segment.c:2133! RIP: 0010:update_sit_entry+0x35d/0x3e0 Call Trace: f2fs_allocate_data_block+0x16c/0x5a0 do_write_page+0x57/0x100 f2fs_do_write_node_page+0x33/0xa0 __write_node_page+0x270/0x4e0 f2fs_sync_node_pages+0x5df/0x670 f2fs_write_checkpoint+0x364/0x13a0 f2fs_sync_fs+0xa3/0x130 f2fs_do_sync_file+0x1a6/0x810 do_fsync+0x33/0x60 __x64_sys_fsync+0xb/0x10 do_syscall_64+0x43/0x110 entry_SYSCALL_64_after_hwframe+0x44/0xa9 The testcase fails because that, in fuzzed image, current segment was allocated with LFS type, its .next_blkoff should point to an unused block address, but actually, its bitmap shows it's not. So during allocation, f2fs crash when setting bitmap. Introducing sanity_check_curseg() to check such inconsistence of current in-used segment. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2019-05-30f2fs: add missing sysfs entries in documentationJaegeuk Kim1-9/+80
This patch cleans up documentation to cover missing sysfs entries. Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2019-05-23f2fs: fix to avoid deadloop if data_flush is onChao Yu4-0/+9
As Hagbard Celine reported: [ 615.697824] INFO: task kworker/u16:5:344 blocked for more than 120 seconds. [ 615.697825] Not tainted 5.0.15-gentoo-f2fslog #4 [ 615.697826] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 615.697827] kworker/u16:5 D 0 344 2 0x80000000 [ 615.697831] Workqueue: writeback wb_workfn (flush-259:0) [ 615.697832] Call Trace: [ 615.697836] ? __schedule+0x2c5/0x8b0 [ 615.697839] schedule+0x32/0x80 [ 615.697841] schedule_preempt_disabled+0x14/0x20 [ 615.697842] __mutex_lock.isra.8+0x2ba/0x4d0 [ 615.697845] ? log_store+0xf5/0x260 [ 615.697848] f2fs_write_data_pages+0x133/0x320 [ 615.697851] ? trace_hardirqs_on+0x2c/0xe0 [ 615.697854] do_writepages+0x41/0xd0 [ 615.697857] __filemap_fdatawrite_range+0x81/0xb0 [ 615.697859] f2fs_sync_dirty_inodes+0x1dd/0x200 [ 615.697861] f2fs_balance_fs_bg+0x2a7/0x2c0 [ 615.697863] ? up_read+0x5/0x20 [ 615.697865] ? f2fs_do_write_data_page+0x2cb/0x940 [ 615.697867] f2fs_balance_fs+0xe5/0x2c0 [ 615.697869] __write_data_page+0x1c8/0x6e0 [ 615.697873] f2fs_write_cache_pages+0x1e0/0x450 [ 615.697878] f2fs_write_data_pages+0x14b/0x320 [ 615.697880] ? trace_hardirqs_on+0x2c/0xe0 [ 615.697883] do_writepages+0x41/0xd0 [ 615.697885] __filemap_fdatawrite_range+0x81/0xb0 [ 615.697887] f2fs_sync_dirty_inodes+0x1dd/0x200 [ 615.697889] f2fs_balance_fs_bg+0x2a7/0x2c0 [ 615.697891] f2fs_write_node_pages+0x51/0x220 [ 615.697894] do_writepages+0x41/0xd0 [ 615.697897] __writeback_single_inode+0x3d/0x3d0 [ 615.697899] writeback_sb_inodes+0x1e8/0x410 [ 615.697902] __writeback_inodes_wb+0x5d/0xb0 [ 615.697904] wb_writeback+0x28f/0x340 [ 615.697906] ? cpumask_next+0x16/0x20 [ 615.697908] wb_workfn+0x33e/0x420 [ 615.697911] process_one_work+0x1a1/0x3d0 [ 615.697913] worker_thread+0x30/0x380 [ 615.697915] ? process_one_work+0x3d0/0x3d0 [ 615.697916] kthread+0x116/0x130 [ 615.697918] ? kthread_create_worker_on_cpu+0x70/0x70 [ 615.697921] ret_from_fork+0x3a/0x50 There is still deadloop in below condition: d A - do_writepages - f2fs_write_node_pages - f2fs_balance_fs_bg - f2fs_sync_dirty_inodes - f2fs_write_cache_pages - mutex_lock(&sbi->writepages) -- lock once - __write_data_page - f2fs_balance_fs_bg - f2fs_sync_dirty_inodes - f2fs_write_data_pages - mutex_lock(&sbi->writepages) -- lock again Thread A Thread B - do_writepages - f2fs_write_node_pages - f2fs_balance_fs_bg - f2fs_sync_dirty_inodes - .cp_task = current - f2fs_sync_dirty_inodes - .cp_task = current - filemap_fdatawrite - .cp_task = NULL - filemap_fdatawrite - f2fs_write_cache_pages - enter f2fs_balance_fs_bg since .cp_task is NULL - .cp_task = NULL Change as below to avoid this: - add condition to avoid holding .writepages mutex lock in path of data flush - introduce mutex lock sbi.flush_lock to exclude concurrent data flush in background. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2019-05-23f2fs: always assume that the device is idle under gc_urgentPark Ju Hyung1-0/+3
This allows more aggressive discards and balancing job to be done under gc_urgent. Signed-off-by: Park Ju Hyung <qkrwngud825@gmail.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2019-05-23f2fs: add bio cache for IPUChao Yu3-10/+86
SQLite in Wal mode may trigger sequential IPU write in db-wal file, after commit d1b3e72d5490 ("f2fs: submit bio of in-place-update pages"), we lost the chance of merging page in inner managed bio cache, result in submitting more small-sized IO. So let's add temporary bio in writepages() to cache mergeable write IO as much as possible. Test case: 1. xfs_io -f /mnt/f2fs/file -c "pwrite 0 65536" -c "fsync" 2. xfs_io -f /mnt/f2fs/file -c "pwrite 0 65536" -c "fsync" Before: f2fs_submit_write_bio: dev = (251,0)/(251,0), rw = WRITE(S), DATA, sector = 65544, size = 4096 f2fs_submit_write_bio: dev = (251,0)/(251,0), rw = WRITE(S), DATA, sector = 65552, size = 4096 f2fs_submit_write_bio: dev = (251,0)/(251,0), rw = WRITE(S), DATA, sector = 65560, size = 4096 f2fs_submit_write_bio: dev = (251,0)/(251,0), rw = WRITE(S), DATA, sector = 65568, size = 4096 f2fs_submit_write_bio: dev = (251,0)/(251,0), rw = WRITE(S), DATA, sector = 65576, size = 4096 f2fs_submit_write_bio: dev = (251,0)/(251,0), rw = WRITE(S), DATA, sector = 65584, size = 4096 f2fs_submit_write_bio: dev = (251,0)/(251,0), rw = WRITE(S), DATA, sector = 65592, size = 4096 f2fs_submit_write_bio: dev = (251,0)/(251,0), rw = WRITE(S), DATA, sector = 65600, size = 4096 f2fs_submit_write_bio: dev = (251,0)/(251,0), rw = WRITE(S), DATA, sector = 65608, size = 4096 f2fs_submit_write_bio: dev = (251,0)/(251,0), rw = WRITE(S), DATA, sector = 65616, size = 4096 f2fs_submit_write_bio: dev = (251,0)/(251,0), rw = WRITE(S), DATA, sector = 65624, size = 4096 f2fs_submit_write_bio: dev = (251,0)/(251,0), rw = WRITE(S), DATA, sector = 65632, size = 4096 f2fs_submit_write_bio: dev = (251,0)/(251,0), rw = WRITE(S), DATA, sector = 65640, size = 4096 f2fs_submit_write_bio: dev = (251,0)/(251,0), rw = WRITE(S), DATA, sector = 65648, size = 4096 f2fs_submit_write_bio: dev = (251,0)/(251,0), rw = WRITE(S), DATA, sector = 65656, size = 4096 f2fs_submit_write_bio: dev = (251,0)/(251,0), rw = WRITE(S), DATA, sector = 65664, size = 4096 f2fs_submit_write_bio: dev = (251,0)/(251,0), rw = WRITE(S), NODE, sector = 57352, size = 4096 After: f2fs_submit_write_bio: dev = (251,0)/(251,0), rw = WRITE(S), DATA, sector = 65544, size = 65536 f2fs_submit_write_bio: dev = (251,0)/(251,0), rw = WRITE(S), NODE, sector = 57368, size = 4096 Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2019-05-23f2fs: allow ssr block allocation during checkpoint=disable periodJaegeuk Kim1-1/+2
This patch allows to use ssr during checkpoint is disabled. Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2019-05-23f2fs: fix to check layout on last valid checkpoint parkChao Yu2-11/+9
As Ju Hyung reported: " I was semi-forced today to use the new kernel and test f2fs. My Ubuntu initramfs got a bit wonky and I had to boot into live CD and fix some stuffs. The live CD was using 4.15 kernel, and just mounting the f2fs partition there corrupted f2fs and my 4.19(with 5.1-rc1-4.19 f2fs-stable merged) refused to mount with "SIT is corrupted node" message. I used the latest f2fs-tools sent by Chao including "fsck.f2fs: fix to repair cp_loads blocks at correct position" It spit out 140M worth of output, but at least I didn't have to run it twice. Everything returned "Ok" in the 2nd run. The new log is at http://arter97.com/f2fs/final After fixing the image, I used my 4.19 kernel with 5.2-rc1-4.19 f2fs-stable merged and it mounted. But, I got this: [ 1.047791] F2FS-fs (nvme0n1p3): layout of large_nat_bitmap is deprecated, run fsck to repair, chksum_offset: 4092 [ 1.081307] F2FS-fs (nvme0n1p3): Found nat_bits in checkpoint [ 1.161520] F2FS-fs (nvme0n1p3): recover fsync data on readonly fs [ 1.162418] F2FS-fs (nvme0n1p3): Mounted with checkpoint version = 761c7e00 But after doing a reboot, the message is gone: [ 1.098423] F2FS-fs (nvme0n1p3): Found nat_bits in checkpoint [ 1.177771] F2FS-fs (nvme0n1p3): recover fsync data on readonly fs [ 1.178365] F2FS-fs (nvme0n1p3): Mounted with checkpoint version = 761c7eda I'm not exactly sure why the kernel detected that I'm still using the old layout on the first boot. Maybe fsck didn't fix it properly, or the check from the kernel is improper. " Although we have rebuild the old deprecated checkpoint with new layout during repair, we only repair last checkpoint park, the other old one is remained. Once the image was mounted, we will 1) sanity check layout and 2) decide which checkpoint park to use according to cp_ver. So that we will print reported message unnecessarily at step 1), to avoid it, we simply move layout check into f2fs_sanity_check_ckpt() after step 2). Reported-by: Park Ju Hyung <qkrwngud825@gmail.com> Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2019-05-23f2fs: link f2fs quota ops for sysfileJaegeuk Kim2-8/+3
This patch reverts: commit fb40d618b039 ("f2fs: don't clear CP_QUOTA_NEED_FSCK_FLAG"). We were missing error handlers used in f2fs quota ops. Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2019-05-14Merge tag 'backlight-next-5.2' of ↵Linus Torvalds15-45/+293
git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight Pull backlight updates from Lee Jones: "Fix-ups: - Remove unused BACKLIGHT_LCD_SUPPORT symbol - Remove unused BACKLIGHT_CLASS_DEVICE dependencies - Add DT support to lm3630a_bl Bug Fixes: - Fix error path issues in lm3630a_bl" * tag 'backlight-next-5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight: backlight: lm3630a: Add firmware node support dt-bindings: backlight: Add lm3630a bindings backlight: lm3630a: Return 0 on success in update_status functions video: lcd: Remove useless BACKLIGHT_CLASS_DEVICE dependencies video: backlight: Remove useless BACKLIGHT_LCD_SUPPORT kernel symbol
2019-05-14Merge tag 'mfd-next-5.2' of ↵Linus Torvalds79-219/+3745
git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd Pull MFD updates from Lee Jones: "Core Framework: - Document (kerneldoc) core mfd_add_devices() API New Drivers: - Altera SOCFPGA System Manager - Maxim MAX77650/77651 PMIC - Maxim MAX77663 PMIC - ST Multi-Function eXpander (STMFX) New Device Support: - LEDs support in Intel Cherry Trail Whiskey Cove PMIC - RTC support in SAMSUNG Electronics S2MPA01 PMIC - SAM9X60 support in Atmel HLCDC (High-end LCD Controller) - USB X-Powers AXP 8xx PMICs - Integrated Sensor Hub (ISH) in ChromeOS EC - USB PD Logger in ChromeOS EC - AXP223 in X-Powers AXP series PMICs - Power Supply in X-Powers AXP 803 PMICs - Comet Lake in Intel Low Power Subsystem - Fingerprint MCU in ChromeOS EC - Touchpad MCU in ChromeOS EC - Move TI LM3532 support to LED New Functionality: - max77650, max77620: Add/extend DT support - max77620 power-off - syscon clocking - croc_ec host sleep event Fix-ups: - Trivial; Formatting, spelling, etc; Kconfig, sec-core, ab8500-debugfs - Remove unused functionality; rk808, da9063-* - SPDX conversion; da9063-*, atmel-*, - Adapt/add new register definitions; cs47l35-tables, cs47l90-tables, imx6q-iomuxc-gpr - Fix-up DT bindings; ti-lmu, cirrus,lochnagar - Simply obtaining driver data; ssbi, t7l66xb, tc6387xb, tc6393xb Bug Fixes: - Fix incorrect defined values; max77620, da9063 - Fix device initialisation; twl6040 - Reset device on init; intel-lpss - Fix build warnings when !OF; sun6i-prcm - Register OF match tables; tps65912-spi - Fix DMI matching; intel_quark_i2c_gpio" * tag 'mfd-next-5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (65 commits) mfd: Use dev_get_drvdata() directly mfd: cros_ec: Instantiate properly CrOS Touchpad MCU device mfd: cros_ec: Instantiate properly CrOS FP MCU device mfd: cros_ec: Update the EC feature codes mfd: intel-lpss: Add Intel Comet Lake PCI IDs mfd: lochnagar: Add links to binding docs for sound and hwmon mfd: ab8500-debugfs: Fix a typo ("deubgfs") mfd: imx6sx: Add MQS register definition for iomuxc gpr dt-bindings: mfd: LMU: Fix lm3632 dt binding example mfd: intel_quark_i2c_gpio: Adjust IOT2000 matching mfd: da9063: Fix OTP control register names to match datasheets for DA9063/63L mfd: tps65912-spi: Add missing of table registration mfd: axp20x: Add USB power supply mfd cell to AXP803 mfd: sun6i-prcm: Fix build warning for non-OF configurations mfd: intel-lpss: Set the device in reset state when init platform/chrome: Add support for v1 of host sleep event mfd: cros_ec: Add host_sleep_event_v1 command mfd: cros_ec: Instantiate the CrOS USB PD logger driver mfd: cs47l90: Make DAC_AEC_CONTROL_2 readable mfd: cs47l35: Make DAC_AEC_CONTROL_2 readable ...
2019-05-14Merge tag 'pci-v5.2-changes' of ↵Linus Torvalds92-1621/+2911
git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI updates from Bjorn Helgaas: "Enumeration changes: - Add _HPX Type 3 settings support, which gives firmware more influence over device configuration (Alexandru Gagniuc) - Support fixed bus numbers from bridge Enhanced Allocation capabilities (Subbaraya Sundeep) - Add "external-facing" DT property to identify cases where we require IOMMU protection against untrusted devices (Jean-Philippe Brucker) - Enable PCIe services for host controller drivers that use managed host bridge alloc (Jean-Philippe Brucker) - Log PCIe port service messages with pci_dev, not the pcie_device (Frederick Lawler) - Convert pciehp from pciehp_debug module parameter to generic dynamic debug (Frederick Lawler) Peer-to-peer DMA: - Add whitelist of Root Complexes that support peer-to-peer DMA between Root Ports (Christian König) Native controller drivers: - Add PCI host bridge DMA ranges for bridges that can't DMA everywhere, e.g., iProc (Srinath Mannam) - Add Amazon Annapurna Labs PCIe host controller driver (Jonathan Chocron) - Fix Tegra MSI target allocation so DMA doesn't generate unwanted MSIs (Vidya Sagar) - Fix of_node reference leaks (Wen Yang) - Fix Hyper-V module unload & device removal issues (Dexuan Cui) - Cleanup R-Car driver (Marek Vasut) - Cleanup Keystone driver (Kishon Vijay Abraham I) - Cleanup i.MX6 driver (Andrey Smirnov) Significant bug fixes: - Reset Lenovo ThinkPad P50 GPU so nouveau works after reboot (Lyude Paul) - Fix Switchtec firmware update performance issue (Wesley Sheng) - Work around Pericom switch link retraining erratum (Stefan Mätje)" * tag 'pci-v5.2-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (141 commits) MAINTAINERS: Add Karthikeyan Mitran and Hou Zhiqiang for Mobiveil PCI PCI: pciehp: Remove pointless MY_NAME definition PCI: pciehp: Remove pointless PCIE_MODULE_NAME definition PCI: pciehp: Remove unused dbg/err/info/warn() wrappers PCI: pciehp: Log messages with pci_dev, not pcie_device PCI: pciehp: Replace pciehp_debug module param with dyndbg PCI: pciehp: Remove pciehp_debug uses PCI/AER: Log messages with pci_dev, not pcie_device PCI/DPC: Log messages with pci_dev, not pcie_device PCI/PME: Replace dev_printk(KERN_DEBUG) with dev_info() PCI/AER: Replace dev_printk(KERN_DEBUG) with dev_info() PCI: Replace dev_printk(KERN_DEBUG) with dev_info(), etc PCI: Replace printk(KERN_INFO) with pr_info(), etc PCI: Use dev_printk() when possible PCI: Cleanup setup-bus.c comments and whitespace PCI: imx6: Allow asynchronous probing PCI: dwc: Save root bus for driver remove hooks PCI: dwc: Use devm_pci_alloc_host_bridge() to simplify code PCI: dwc: Free MSI in dw_pcie_host_init() error path PCI: dwc: Free MSI IRQ page in dw_pcie_free_msi() ...
2019-05-14Merge branch 'akpm' (patches from Andrew)Linus Torvalds189-2332/+3646
Merge misc updates from Andrew Morton: - a few misc things and hotfixes - ocfs2 - almost all of MM * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (139 commits) kernel/memremap.c: remove the unused device_private_entry_fault() export mm: delete find_get_entries_tag mm/huge_memory.c: make __thp_get_unmapped_area static mm/mprotect.c: fix compilation warning because of unused 'mm' variable mm/page-writeback: introduce tracepoint for wait_on_page_writeback() mm/vmscan: simplify trace_reclaim_flags and trace_shrink_flags mm/Kconfig: update "Memory Model" help text mm/vmscan.c: don't disable irq again when count pgrefill for memcg mm: memblock: make keeping memblock memory opt-in rather than opt-out hugetlbfs: always use address space in inode for resv_map pointer mm/z3fold.c: support page migration mm/z3fold.c: add structure for buddy handles mm/z3fold.c: improve compression by extending search mm/z3fold.c: introduce helper functions mm/page_alloc.c: remove unnecessary parameter in rmqueue_pcplist mm/hmm: add ARCH_HAS_HMM_MIRROR ARCH_HAS_HMM_DEVICE Kconfig mm/vmscan.c: simplify shrink_inactive_list() fs/sync.c: sync_file_range(2) may use WB_SYNC_ALL writeback xen/privcmd-buf.c: convert to use vm_map_pages_zero() xen/gntdev.c: convert to use vm_map_pages() ...
2019-05-14kernel/memremap.c: remove the unused device_private_entry_fault() exportChristoph Hellwig1-1/+0
This export has been entirely unused since it was added more than 1 1/2 years ago. Link: http://lkml.kernel.org/r/20190429115535.12793-1-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dan Williams <dan.j.williams@intel.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-05-14mm: delete find_get_entries_tagMatthew Wilcox (Oracle)2-64/+0
I removed the only user of this and hadn't noticed it was now unused. Link: http://lkml.kernel.org/r/20190430152929.21813-1-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Ross Zwisler <zwisler@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-05-14mm/huge_memory.c: make __thp_get_unmapped_area staticBharath Vedartham1-1/+1
__thp_get_unmapped_area is only used in mm/huge_memory.c. Make it static. Tested by building and booting the kernel. Link: http://lkml.kernel.org/r/20190504102353.GA22525@bharath12345-Inspiron-5559 Signed-off-by: Bharath Vedartham <linux.bhar@gmail.com> Acked-by: Michal Hocko <mhocko@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-05-14mm/mprotect.c: fix compilation warning because of unused 'mm' variableMike Rapoport1-3/+2
Since 0cbe3e26abe0 ("mm: update ptep_modify_prot_start/commit to take vm_area_struct as arg") the only place that uses the local 'mm' variable in change_pte_range() is the call to set_pte_at(). Many architectures define set_pte_at() as macro that does not use the 'mm' parameter, which generates the following compilation warning: CC mm/mprotect.o mm/mprotect.c: In function 'change_pte_range': mm/mprotect.c:42:20: warning: unused variable 'mm' [-Wunused-variable] struct mm_struct *mm = vma->vm_mm; ^~ Fix it by passing vma->mm to set_pte_at() and dropping the local 'mm' variable in change_pte_range(). [liu.song.a23@gmail.com: fix missed conversions] Link: http://lkml.kernel.org/r/CAPhsuW6wcQgYLHNdBdw6m0YiR4RWsS4XzfpSKU7wBLLeOCTbpw@mail.gmail.comLink: http://lkml.kernel.org/r/1557305432-4940-1-git-send-email-rppt@linux.ibm.com Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Song Liu <liu.song.a23@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-05-14mm/page-writeback: introduce tracepoint for wait_on_page_writeback()Yafang Shao3-10/+28
Recently there have been some hung tasks on our server due to wait_on_page_writeback(), and we want to know the details of this PG_writeback, i.e. this page is writing back to which device. But it is not so convenient to get the details. I think it would be better to introduce a tracepoint for diagnosing the writeback details. Link: http://lkml.kernel.org/r/1556274402-19018-1-git-send-email-laoar.shao@gmail.com Signed-off-by: Yafang Shao <laoar.shao@gmail.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Jan Kara <jack@suse.cz> Cc: Michal Hocko <mhocko@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-05-14mm/vmscan: simplify trace_reclaim_flags and trace_shrink_flagsYafang Shao1-12/+8
trace_reclaim_flags and trace_shrink_flags are almost the same. We can simplify them to avoid redundant code. Link: http://lkml.kernel.org/r/1556169203-5858-1-git-send-email-laoar.shao@gmail.com Signed-off-by: Yafang Shao <laoar.shao@gmail.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-05-14mm/Kconfig: update "Memory Model" help textMike Rapoport1-25/+23
The help describing the memory model selection is outdated. It still says that SPARSEMEM is experimental and DISCONTIGMEM is a preferred over SPARSEMEM. Update the help text for the relevant options: * add a generic help for the "Memory Model" prompt * add description for FLATMEM * reduce the description of DISCONTIGMEM and add a deprecation note * prefer SPARSEMEM over DISCONTIGMEM Link: http://lkml.kernel.org/r/1556188531-20728-1-git-send-email-rppt@linux.ibm.com Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Acked-by: Michal Hocko <mhocko@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-05-14mm/vmscan.c: don't disable irq again when count pgrefill for memcgYafang Shao1-1/+1
We can use __count_memcg_events() directly because this callsite is alreay protected by spin_lock_irq(). Link: http://lkml.kernel.org/r/1556093494-30798-1-git-send-email-laoar.shao@gmail.com Signed-off-by: Yafang Shao <laoar.shao@gmail.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-05-14mm: memblock: make keeping memblock memory opt-in rather than opt-outMike Rapoport16-23/+19
Most architectures do not need the memblock memory after the page allocator is initialized, but only few enable ARCH_DISCARD_MEMBLOCK in the arch Kconfig. Replacing ARCH_DISCARD_MEMBLOCK with ARCH_KEEP_MEMBLOCK and inverting the logic makes it clear which architectures actually use memblock after system initialization and skips the necessity to add ARCH_DISCARD_MEMBLOCK to the architectures that are still missing that option. Link: http://lkml.kernel.org/r/1556102150-32517-1-git-send-email-rppt@linux.ibm.com Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) Cc: Russell King <linux@armlinux.org.uk> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Richard Kuo <rkuo@codeaurora.org> Cc: Tony Luck <tony.luck@intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Burton <paul.burton@mips.com> Cc: James Hogan <jhogan@kernel.org> Cc: Ley Foon Tan <lftan@altera.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Rich Felker <dalias@libc.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Eric Biederman <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-05-14hugetlbfs: always use address space in inode for resv_map pointerMike Kravetz2-3/+27
Continuing discussion about 58b6e5e8f1ad ("hugetlbfs: fix memory leak for resv_map") brought up the issue that inode->i_mapping may not point to the address space embedded within the inode at inode eviction time. The hugetlbfs truncate routine handles this by explicitly using inode->i_data. However, code cleaning up the resv_map will still use the address space pointed to by inode->i_mapping. Luckily, private_data is NULL for address spaces in all such cases today but, there is no guarantee this will continue. Change all hugetlbfs code getting a resv_map pointer to explicitly get it from the address space embedded within the inode. In addition, add more comments in the code to indicate why this is being done. Link: http://lkml.kernel.org/r/20190419204435.16984-1-mike.kravetz@oracle.com Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com> Reported-by: Yufen Yu <yuyufen@huawei.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: "Kirill A . Shutemov" <kirill.shutemov@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-05-14mm/z3fold.c: support page migrationVitaly Wool1-10/+231
Now that we are not using page address in handles directly, we can make z3fold pages movable to decrease the memory fragmentation z3fold may create over time. This patch starts advertising non-headless z3fold pages as movable and uses the existing kernel infrastructure to implement moving of such pages per memory management subsystem's request. It thus implements 3 required callbacks for page migration: * isolation callback: z3fold_page_isolate(): try to isolate the page by removing it from all lists. Pages scheduled for some activity and mapped pages will not be isolated. Return true if isolation was successful or false otherwise * migration callback: z3fold_page_migrate(): re-check critical conditions and migrate page contents to the new page provided by the memory subsystem. Returns 0 on success or negative error code otherwise * putback callback: z3fold_page_putback(): put back the page if z3fold_page_migrate() for it failed permanently (i. e. not with -EAGAIN code). [lkp@intel.com: z3fold_page_isolate() can be static] Link: http://lkml.kernel.org/r/20190419130924.GA161478@ivb42 Link: http://lkml.kernel.org/r/20190417103922.31253da5c366c4ebe0419cfc@gmail.com Signed-off-by: Vitaly Wool <vitaly.vul@sony.com> Signed-off-by: kbuild test robot <lkp@intel.com> Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Cc: Dan Streetman <ddstreet@ieee.org> Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com> Cc: Oleksiy Avramchenko <oleksiy.avramchenko@sonymobile.com> Cc: Uladzislau Rezki <urezki@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-05-14mm/z3fold.c: add structure for buddy handlesVitaly Wool1-40/+145
For z3fold to be able to move its pages per request of the memory subsystem, it should not use direct object addresses in handles. Instead, it will create abstract handles (3 per page) which will contain pointers to z3fold objects. Thus, it will be possible to change these pointers when z3fold page is moved. Link: http://lkml.kernel.org/r/20190417103826.484eaf18c1294d682769880f@gmail.com Signed-off-by: Vitaly Wool <vitaly.vul@sony.com> Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Cc: Dan Streetman <ddstreet@ieee.org> Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com> Cc: Oleksiy Avramchenko <oleksiy.avramchenko@sonymobile.com> Cc: Uladzislau Rezki <urezki@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-05-14mm/z3fold.c: improve compression by extending searchVitaly Wool1-0/+36
The current z3fold implementation only searches this CPU's page lists for a fitting page to put a new object into. This patch adds quick search for very well fitting pages (i. e. those having exactly the required number of free space) on other CPUs too, before allocating a new page for that object. Link: http://lkml.kernel.org/r/20190417103733.72ae81abe1552397c95a008e@gmail.com Signed-off-by: Vitaly Wool <vitaly.vul@sony.com> Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Cc: Dan Streetman <ddstreet@ieee.org> Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com> Cc: Oleksiy Avramchenko <oleksiy.avramchenko@sonymobile.com> Cc: Uladzislau Rezki <urezki@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-05-14mm/z3fold.c: introduce helper functionsVitaly Wool1-84/+100
Patch series "z3fold: support page migration", v2. This patchset implements page migration support and slightly better buddy search. To implement page migration support, z3fold has to move away from the current scheme of handle encoding. i. e. stop encoding page address in handles. Instead, a small per-page structure is created which will contain actual addresses for z3fold objects, while pointers to fields of that structure will be used as handles. Thus, it will be possible to change the underlying addresses to reflect page migration. To support migration itself, 3 callbacks will be implemented: 1: isolation callback: z3fold_page_isolate(): try to isolate the page by removing it from all lists. Pages scheduled for some activity and mapped pages will not be isolated. Return true if isolation was successful or false otherwise 2: migration callback: z3fold_page_migrate(): re-check critical conditions and migrate page contents to the new page provided by the system. Returns 0 on success or negative error code otherwise 3: putback callback: z3fold_page_putback(): put back the page if z3fold_page_migrate() for it failed permanently (i. e. not with -EAGAIN code). To make sure an isolated page doesn't get freed, its kref is incremented in z3fold_page_isolate() and decremented during post-migration compaction, if migration was successful, or by z3fold_page_putback() in the other case. Since the new handle encoding scheme implies slight memory consumption increase, better buddy search (which decreases memory consumption) is included in this patchset. This patch (of 4): Introduce a separate helper function for object allocation, as well as 2 smaller helpers to add a buddy to the list and to get a pointer to the pool from the z3fold header. No functional changes here. Link: http://lkml.kernel.org/r/20190417103633.a4bb770b5bf0fb7e43ce1666@gmail.com Signed-off-by: Vitaly Wool <vitaly.vul@sony.com> Cc: Dan Streetman <ddstreet@ieee.org> Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com> Cc: Oleksiy Avramchenko <oleksiy.avramchenko@sonymobile.com> Cc: Uladzislau Rezki <urezki@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-05-14mm/page_alloc.c: remove unnecessary parameter in rmqueue_pcplistYafang Shao1-6/+5
Because rmqueue_pcplist() is only called when order is 0, we don't need to use order as a parameter. Link: http://lkml.kernel.org/r/1555591709-11744-1-git-send-email-laoar.shao@gmail.com Signed-off-by: Yafang Shao <laoar.shao@gmail.com> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: Pankaj Gupta <pagupta@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-05-14mm/hmm: add ARCH_HAS_HMM_MIRROR ARCH_HAS_HMM_DEVICE KconfigJérôme Glisse1-0/+16
Add 2 new Kconfig variables that are not used by anyone. I check that various make ARCH=somearch allmodconfig do work and do not complain. This new Kconfig needs to be added first so that device drivers that depend on HMM can be updated. Once drivers are updated then I can update the HMM Kconfig to depend on this new Kconfig in a followup patch. This is about solving Kconfig for HMM given that device driver are going through their own tree we want to avoid changing them from the mm tree. So plan is: 1 - Kernel release N add the new Kconfig to mm/Kconfig (this patch) 2 - Kernel release N+1 update driver to depend on new Kconfig ie stop using ARCH_HASH_HMM and start using ARCH_HAS_HMM_MIRROR and ARCH_HAS_HMM_DEVICE (one or the other or both depending on the driver) 3 - Kernel release N+2 remove ARCH_HASH_HMM and do final Kconfig update in mm/Kconfig Link: http://lkml.kernel.org/r/20190417211141.17580-1-jglisse@redhat.com Signed-off-by: Jérôme Glisse <jglisse@redhat.com> Cc: Guenter Roeck <linux@roeck-us.net> Cc: Leon Romanovsky <leonro@mellanox.com> Cc: Jason Gunthorpe <jgg@mellanox.com> Cc: Ralph Campbell <rcampbell@nvidia.com> Cc: John Hubbard <jhubbard@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-05-14mm/vmscan.c: simplify shrink_inactive_list()Kirill Tkhai1-22/+9
This merges together duplicated patterns of code. Also, replace count_memcg_events() with its irq-careless namesake, because they are already called in interrupts disabled context. Link: http://lkml.kernel.org/r/2ece1df4-2989-bc9b-6172-61e9fdde5bfd@virtuozzo.com Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com> Acked-by: Michal Hocko <mhocko@suse.com> Reviewed-by: Daniel Jordan <daniel.m.jordan@oracle.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Cc: Baoquan He <bhe@redhat.com> Cc: Davidlohr Bueso <dave@stgolabs.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-05-14fs/sync.c: sync_file_range(2) may use WB_SYNC_ALL writebackAmir Goldstein2-6/+18
23d0127096cb ("fs/sync.c: make sync_file_range(2) use WB_SYNC_NONE writeback") claims that sync_file_range(2) syscall was "created for userspace to be able to issue background writeout and so waiting for in-flight IO is undesirable there" and changes the writeback (back) to WB_SYNC_NONE. This claim is only partially true. It is true for users that use the flag SYNC_FILE_RANGE_WRITE by itself, as does PostgreSQL, the user that was the reason for changing to WB_SYNC_NONE writeback. However, that claim is not true for users that use that flag combination SYNC_FILE_RANGE_{WAIT_BEFORE|WRITE|_WAIT_AFTER}. Those users explicitly requested to wait for in-flight IO as well as to writeback of dirty pages. Re-brand that flag combination as SYNC_FILE_RANGE_WRITE_AND_WAIT and use WB_SYNC_ALL writeback to perform the full range sync request. Link: http://lkml.kernel.org/r/20190409114922.30095-1-amir73il@gmail.com Link: http://lkml.kernel.org/r/20190419072938.31320-1-amir73il@gmail.com Fixes: 23d0127096cb ("fs/sync.c: make sync_file_range(2) use WB_SYNC_NONE") Signed-off-by: Amir Goldstein <amir73il@gmail.com> Acked-by: Jan Kara <jack@suse.com> Cc: Dave Chinner <david@fromorbit.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-05-14xen/privcmd-buf.c: convert to use vm_map_pages_zero()Souptick Joarder1-6/+2
Convert to use vm_map_pages_zero() to map range of kernel memory to user vma. This driver has ignored vm_pgoff. We could later "fix" these drivers to behave according to the normal vm_pgoff offsetting simply by removing the _zero suffix on the function name and if that causes regressions, it gives us an easy way to revert. Link: http://lkml.kernel.org/r/acf678e81d554d01a9b590716ac0ccbdcdf71c25.1552921225.git.jrdr.linux@gmail.com Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: David Airlie <airlied@linux.ie> Cc: Heiko Stuebner <heiko@sntech.de> Cc: Joerg Roedel <joro@8bytes.org> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Juergen Gross <jgross@suse.com> Cc: Kees Cook <keescook@chromium.org> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Kyungmin Park <kyungmin.park@samsung.com> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Mauro Carvalho Chehab <mchehab@infradead.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@linux.ibm.com> Cc: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com> Cc: Pawel Osciak <pawel@osciak.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@surriel.com> Cc: Robin Murphy <robin.murphy@arm.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Sandy Huang <hjc@rock-chips.com> Cc: Stefan Richter <stefanr@s5r6.in-berlin.de> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Thierry Reding <treding@nvidia.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-05-14xen/gntdev.c: convert to use vm_map_pages()Souptick Joarder1-7/+4
Convert to use vm_map_pages() to map range of kernel memory to user vma. map->count is passed to vm_map_pages() and internal API verify map->count against count ( count = vma_pages(vma)) for page array boundary overrun condition. Link: http://lkml.kernel.org/r/88e56e82d2db98705c2d842e9c9806c00b366d67.1552921225.git.jrdr.linux@gmail.com Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: David Airlie <airlied@linux.ie> Cc: Heiko Stuebner <heiko@sntech.de> Cc: Joerg Roedel <joro@8bytes.org> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Juergen Gross <jgross@suse.com> Cc: Kees Cook <keescook@chromium.org> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Kyungmin Park <kyungmin.park@samsung.com> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Mauro Carvalho Chehab <mchehab@infradead.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@linux.ibm.com> Cc: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com> Cc: Pawel Osciak <pawel@osciak.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@surriel.com> Cc: Robin Murphy <robin.murphy@arm.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Sandy Huang <hjc@rock-chips.com> Cc: Stefan Richter <stefanr@s5r6.in-berlin.de> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Thierry Reding <treding@nvidia.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-05-14videobuf2/videobuf2-dma-sg.c: convert to use vm_map_pages()Souptick Joarder3-22/+13
Convert to use vm_map_pages() to map range of kernel memory to user vma. vm_pgoff is treated in V4L2 API as a 'cookie' to select a buffer, not as a in-buffer offset by design and it always want to mmap a whole buffer from its beginning. Link: http://lkml.kernel.org/r/a953fe6b3056de1cc6eab654effdd4a22f125375.1552921225.git.jrdr.linux@gmail.com Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com> Suggested-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: David Airlie <airlied@linux.ie> Cc: Heiko Stuebner <heiko@sntech.de> Cc: Joerg Roedel <joro@8bytes.org> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Juergen Gross <jgross@suse.com> Cc: Kees Cook <keescook@chromium.org> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Kyungmin Park <kyungmin.park@samsung.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Mauro Carvalho Chehab <mchehab@infradead.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@linux.ibm.com> Cc: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com> Cc: Pawel Osciak <pawel@osciak.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@surriel.com> Cc: Robin Murphy <robin.murphy@arm.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Sandy Huang <hjc@rock-chips.com> Cc: Stefan Richter <stefanr@s5r6.in-berlin.de> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Thierry Reding <treding@nvidia.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-05-14iommu/dma-iommu.c: convert to use vm_map_pages()Souptick Joarder1-11/+1
Convert to use vm_map_pages() to map range of kernel memory to user vma. Link: http://lkml.kernel.org/r/80c3d220fc6ada73a88ce43ca049afb55a889258.1552921225.git.jrdr.linux@gmail.com Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: David Airlie <airlied@linux.ie> Cc: Heiko Stuebner <heiko@sntech.de> Cc: Joerg Roedel <joro@8bytes.org> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Juergen Gross <jgross@suse.com> Cc: Kees Cook <keescook@chromium.org> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Kyungmin Park <kyungmin.park@samsung.com> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Mauro Carvalho Chehab <mchehab@infradead.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@linux.ibm.com> Cc: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com> Cc: Pawel Osciak <pawel@osciak.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@surriel.com> Cc: Robin Murphy <robin.murphy@arm.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Sandy Huang <hjc@rock-chips.com> Cc: Stefan Richter <stefanr@s5r6.in-berlin.de> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Thierry Reding <treding@nvidia.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-05-14drm/xen/xen_drm_front_gem.c: convert to use vm_map_pages()Souptick Joarder1-13/+5
Convert to use vm_map_pages() to map range of kernel memory to user vma. Link: http://lkml.kernel.org/r/ff8e10ba778d79419c66ee8215bccf01560540fd.1552921225.git.jrdr.linux@gmail.com Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com> Reviewed-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: David Airlie <airlied@linux.ie> Cc: Heiko Stuebner <heiko@sntech.de> Cc: Joerg Roedel <joro@8bytes.org> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Juergen Gross <jgross@suse.com> Cc: Kees Cook <keescook@chromium.org> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Kyungmin Park <kyungmin.park@samsung.com> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Mauro Carvalho Chehab <mchehab@infradead.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@linux.ibm.com> Cc: Pawel Osciak <pawel@osciak.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@surriel.com> Cc: Robin Murphy <robin.murphy@arm.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Sandy Huang <hjc@rock-chips.com> Cc: Stefan Richter <stefanr@s5r6.in-berlin.de> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Thierry Reding <treding@nvidia.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-05-14drm/rockchip/rockchip_drm_gem.c: convert to use vm_map_pages()Souptick Joarder1-15/+2
Convert to use vm_map_pages() to map range of kernel memory to user vma. Tested on Rockchip hardware and display is working, including talking to Lima via prime. Link: http://lkml.kernel.org/r/7ba359eb1aceac388d05983c1f29b915bdf291f9.1552921225.git.jrdr.linux@gmail.com Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: David Airlie <airlied@linux.ie> Cc: Joerg Roedel <joro@8bytes.org> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Juergen Gross <jgross@suse.com> Cc: Kees Cook <keescook@chromium.org> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Kyungmin Park <kyungmin.park@samsung.com> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Mauro Carvalho Chehab <mchehab@infradead.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@linux.ibm.com> Cc: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com> Cc: Pawel Osciak <pawel@osciak.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@surriel.com> Cc: Robin Murphy <robin.murphy@arm.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Sandy Huang <hjc@rock-chips.com> Cc: Stefan Richter <stefanr@s5r6.in-berlin.de> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Thierry Reding <treding@nvidia.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-05-14drivers/firewire/core-iso.c: convert to use vm_map_pages_zero()Souptick Joarder1-13/+2
Convert to use vm_map_pages_zero() to map range of kernel memory to user vma. This driver has ignored vm_pgoff and mapped the entire pages. We could later "fix" these drivers to behave according to the normal vm_pgoff offsetting simply by removing the _zero suffix on the function name and if that causes regressions, it gives us an easy way to revert. Link: http://lkml.kernel.org/r/88645f5ea8202784a8baaf389e592aeb8c505e8e.1552921225.git.jrdr.linux@gmail.com Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: David Airlie <airlied@linux.ie> Cc: Heiko Stuebner <heiko@sntech.de> Cc: Joerg Roedel <joro@8bytes.org> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Juergen Gross <jgross@suse.com> Cc: Kees Cook <keescook@chromium.org> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Kyungmin Park <kyungmin.park@samsung.com> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Mauro Carvalho Chehab <mchehab@infradead.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@linux.ibm.com> Cc: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com> Cc: Pawel Osciak <pawel@osciak.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@surriel.com> Cc: Robin Murphy <robin.murphy@arm.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Sandy Huang <hjc@rock-chips.com> Cc: Stefan Richter <stefanr@s5r6.in-berlin.de> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Thierry Reding <treding@nvidia.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-05-14arm: mm: dma-mapping: convert to use vm_map_pages()Souptick Joarder1-16/+6
Convert to use vm_map_pages() to map range of kernel memory to user vma. Link: http://lkml.kernel.org/r/936e5e107c746a7310e3a3c471188ca3ac8f9754.1552921225.git.jrdr.linux@gmail.com Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: David Airlie <airlied@linux.ie> Cc: Heiko Stuebner <heiko@sntech.de> Cc: Joerg Roedel <joro@8bytes.org> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Juergen Gross <jgross@suse.com> Cc: Kees Cook <keescook@chromium.org> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Kyungmin Park <kyungmin.park@samsung.com> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Mauro Carvalho Chehab <mchehab@infradead.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@linux.ibm.com> Cc: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com> Cc: Pawel Osciak <pawel@osciak.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@surriel.com> Cc: Robin Murphy <robin.murphy@arm.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Sandy Huang <hjc@rock-chips.com> Cc: Stefan Richter <stefanr@s5r6.in-berlin.de> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Thierry Reding <treding@nvidia.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-05-14mm: introduce new vm_map_pages() and vm_map_pages_zero() APISouptick Joarder3-0/+99
Patch series "mm: Use vm_map_pages() and vm_map_pages_zero() API", v5. This patch (of 5): Previouly drivers have their own way of mapping range of kernel pages/memory into user vma and this was done by invoking vm_insert_page() within a loop. As this pattern is common across different drivers, it can be generalized by creating new functions and using them across the drivers. vm_map_pages() is the API which can be used to map kernel memory/pages in drivers which have considered vm_pgoff vm_map_pages_zero() is the API which can be used to map a range of kernel memory/pages in drivers which have not considered vm_pgoff. vm_pgoff is passed as default 0 for those drivers. We _could_ then at a later "fix" these drivers which are using vm_map_pages_zero() to behave according to the normal vm_pgoff offsetting simply by removing the _zero suffix on the function name and if that causes regressions, it gives us an easy way to revert. Tested on Rockchip hardware and display is working, including talking to Lima via prime. Link: http://lkml.kernel.org/r/751cb8a0f4c3e67e95c58a3b072937617f338eea.1552921225.git.jrdr.linux@gmail.com Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com> Suggested-by: Russell King <linux@armlinux.org.uk> Suggested-by: Matthew Wilcox <willy@infradead.org> Reviewed-by: Mike Rapoport <rppt@linux.ibm.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Cc: Michal Hocko <mhocko@suse.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Rik van Riel <riel@surriel.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Robin Murphy <robin.murphy@arm.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Thierry Reding <treding@nvidia.com> Cc: Kees Cook <keescook@chromium.org> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Stefan Richter <stefanr@s5r6.in-berlin.de> Cc: Sandy Huang <hjc@rock-chips.com> Cc: David Airlie <airlied@linux.ie> Cc: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Pawel Osciak <pawel@osciak.com> Cc: Kyungmin Park <kyungmin.park@samsung.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Juergen Gross <jgross@suse.com> Cc: Mauro Carvalho Chehab <mchehab@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-05-14mm: remove redundant 'default n' from Kconfig-sBartlomiej Zolnierkiewicz2-12/+0
'default n' is the default value for any bool or tristate Kconfig setting so there is no need to write it explicitly. Also since commit f467c5640c29 ("kconfig: only write '# CONFIG_FOO is not set' for visible symbols") the Kconfig behavior is the same regardless of 'default n' being present or not: ... One side effect of (and the main motivation for) this change is making the following two definitions behave exactly the same: config FOO bool config FOO bool default n With this change, neither of these will generate a '# CONFIG_FOO is not set' line (assuming FOO isn't selected/implied). That might make it clearer to people that a bare 'default n' is redundant. ... Link: http://lkml.kernel.org/r/c3385916-e4d4-37d3-b330-e6b7dff83a52@samsung.com Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-05-14mm: fix false-positive OVERCOMMIT_GUESS failuresJohannes Weiner1-46/+5
With the default overcommit==guess we occasionally run into mmap rejections despite plenty of memory that would get dropped under pressure but just isn't accounted reclaimable. One example of this is dying cgroups pinned by some page cache. A previous case was auxiliary path name memory associated with dentries; we have since annotated those allocations to avoid overcommit failures (see d79f7aa496fc ("mm: treat indirectly reclaimable memory as free in overcommit logic")). But trying to classify all allocated memory reliably as reclaimable and unreclaimable is a bit of a fool's errand. There could be a myriad of dependencies that constantly change with kernel versions. It becomes even more questionable of an effort when considering how this estimate of available memory is used: it's not compared to the system-wide allocated virtual memory in any way. It's not even compared to the allocating process's address space. It's compared to the single allocation request at hand! So we have an elaborate left-hand side of the equation that tries to assess the exact breathing room the system has available down to a page - and then compare it to an isolated allocation request with no additional context. We could fail an allocation of N bytes, but for two allocations of N/2 bytes we'd do this elaborate dance twice in a row and then still let N bytes of virtual memory through. This doesn't make a whole lot of sense. Let's take a step back and look at the actual goal of the heuristic. From the documentation: Heuristic overcommit handling. Obvious overcommits of address space are refused. Used for a typical system. It ensures a seriously wild allocation fails while allowing overcommit to reduce swap usage. root is allowed to allocate slightly more memory in this mode. This is the default. If all we want to do is catch clearly bogus allocation requests irrespective of the general virtual memory situation, the physical memory counter-part doesn't need to be that complicated, either. When in GUESS mode, catch wild allocations by comparing their request size to total amount of ram and swap in the system. Link: http://lkml.kernel.org/r/20190412191418.26333-1-hannes@cmpxchg.org Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Acked-by: Roman Gushchin <guro@fb.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-05-14mm/memory_hotplug: make __remove_pages() and arch_remove_memory() never failDavid Hildenbrand8-40/+24
All callers of arch_remove_memory() ignore errors. And we should really try to remove any errors from the memory removal path. No more errors are reported from __remove_pages(). BUG() in s390x code in case arch_remove_memory() is triggered. We may implement that properly later. WARN in case powerpc code failed to remove the section mapping, which is better than ignoring the error completely right now. Link: http://lkml.kernel.org/r/20190409100148.24703-5-david@redhat.com Signed-off-by: David Hildenbrand <david@redhat.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Rich Felker <dalias@libc.org> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@linux.ibm.com> Cc: Oscar Salvador <osalvador@suse.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Christophe Leroy <christophe.leroy@c-s.fr> Cc: Stefan Agner <stefan@agner.ch> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Pavel Tatashin <pasha.tatashin@soleen.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Arun KS <arunks@codeaurora.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Rob Herring <robh@kernel.org> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Wei Yang <richard.weiyang@gmail.com> Cc: Qian Cai <cai@lca.pw> Cc: Mathieu Malaterre <malat@debian.org> Cc: Andrew Banman <andrew.banman@hpe.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Mike Travis <mike.travis@hpe.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: "Rafael J. Wysocki" <rafael@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-05-14mm/memory_hotplug: make __remove_section() never failDavid Hildenbrand1-13/+9
Let's just warn in case a section is not valid instead of failing to remove somewhere in the middle of the process, returning an error that will be mostly ignored by callers. Link: http://lkml.kernel.org/r/20190409100148.24703-4-david@redhat.com Signed-off-by: David Hildenbrand <david@redhat.com> Reviewed-by: Oscar Salvador <osalvador@suse.de> Cc: Michal Hocko <mhocko@suse.com> Cc: David Hildenbrand <david@redhat.com> Cc: Pavel Tatashin <pasha.tatashin@soleen.com> Cc: Qian Cai <cai@lca.pw> Cc: Wei Yang <richard.weiyang@gmail.com> Cc: Arun KS <arunks@codeaurora.org> Cc: Mathieu Malaterre <malat@debian.org> Cc: Andrew Banman <andrew.banman@hpe.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Christophe Leroy <christophe.leroy@c-s.fr> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Mike Rapoport <rppt@linux.ibm.com> Cc: Mike Travis <mike.travis@hpe.com> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Oscar Salvador <osalvador@suse.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: "Rafael J. Wysocki" <rafael@kernel.org> Cc: Rich Felker <dalias@libc.org> Cc: Rob Herring <robh@kernel.org> Cc: Stefan Agner <stefan@agner.ch> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tony Luck <tony.luck@intel.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-25 10:49:38 +0000