kernel/linux.git, branch v5.14-rc1

Linux 5.14-rc1

2021-07-11T22:07:40+00:00

mm/rmap: try_to_migrate() skip zone_device !device_private

2021-07-11T22:05:15+00:00

I know nothing about zone_device pages and !device_private pages; but if try_to_migrate_one() will do nothing for them, then it's better that try_to_migrate() filter them first, than trawl through all their vmas. Signed-off-by: Hugh Dickins Reviewed-by: Shakeel Butt Reviewed-by: Alistair Popple Link: https://lore.kernel.org/lkml/1241d356-8ec9-f47b-a5ec-9b2bf66d242@google.com/ Cc: Andrew Morton Cc: Jason Gunthorpe Cc: Ralph Campbell Cc: Christoph Hellwig Cc: Yang Shi Cc: Kirill A. Shutemov Signed-off-by: Linus Torvalds

mm/rmap: fix new bug: premature return from page_mlock_one()

2021-07-11T22:05:15+00:00

In the unlikely race case that page_mlock_one() finds VM_LOCKED has been cleared by the time it got page table lock, page_vma_mapped_walk_done() must be called before returning, either explicitly, or by a final call to page_vma_mapped_walk() - otherwise the page table remains locked. Fixes: cd62734ca60d ("mm/rmap: split try_to_munlock from try_to_unmap") Signed-off-by: Hugh Dickins Reviewed-by: Alistair Popple Reviewed-by: Shakeel Butt Reported-by: kernel test robot Link: https://lore.kernel.org/lkml/20210711151446.GB4070@xsang-OptiPlex-9020/ Link: https://lore.kernel.org/lkml/f71f8523-cba7-3342-40a7-114abc5d1f51@google.com/ Cc: Andrew Morton Cc: Jason Gunthorpe Cc: Ralph Campbell Cc: Christoph Hellwig Cc: Yang Shi Cc: Kirill A. Shutemov Signed-off-by: Linus Torvalds

mm/rmap: fix old bug: munlocking THP missed other mlocks

2021-07-11T22:05:15+00:00

The kernel recovers in due course from missing Mlocked pages: but there was no point in calling page_mlock() (formerly known as try_to_munlock()) on a THP, because nothing got done even when it was found to be mapped in another VM_LOCKED vma. It's true that we need to be careful: Mlocked accounting of pte-mapped THPs is too difficult (so consistently avoided); but Mlocked accounting of only-pmd-mapped THPs is supposed to work, even when multiple mappings are mlocked and munlocked or munmapped. Refine the tests. There is already a VM_BUG_ON_PAGE(PageDoubleMap) in page_mlock(), so page_mlock_one() does not even have to worry about that complication. (I said the kernel recovers: but would page reclaim be likely to split THP before rediscovering that it's VM_LOCKED? I've not followed that up) Fixes: 9a73f61bdb8a ("thp, mlock: do not mlock PTE-mapped file huge pages") Signed-off-by: Hugh Dickins Reviewed-by: Shakeel Butt Acked-by: Kirill A. Shutemov Link: https://lore.kernel.org/lkml/cfa154c-d595-406-eb7d-eb9df730f944@google.com/ Cc: Andrew Morton Cc: Alistair Popple Cc: Jason Gunthorpe Cc: Ralph Campbell Cc: Christoph Hellwig Cc: Yang Shi Signed-off-by: Linus Torvalds

mm/rmap: fix comments left over from recent changes

2021-07-11T22:05:15+00:00

Parallel developments in mm/rmap.c have left behind some out-of-date comments: try_to_migrate_one() also accepts TTU_SYNC (already commented in try_to_migrate() itself), and try_to_migrate() returns nothing at all. TTU_SPLIT_FREEZE has just been deleted, so reword the comment about it in mm/huge_memory.c; and TTU_IGNORE_ACCESS was removed in 5.11, so delete the "recently referenced" comment from try_to_unmap_one() (once upon a time the comment was near the removed codeblock, but they drifted apart). Signed-off-by: Hugh Dickins Reviewed-by: Shakeel Butt Reviewed-by: Alistair Popple Link: https://lore.kernel.org/lkml/563ce5b2-7a44-5b4d-1dfd-59a0e65932a9@google.com/ Cc: Andrew Morton Cc: Jason Gunthorpe Cc: Ralph Campbell Cc: Christoph Hellwig Cc: Yang Shi Cc: Kirill A. Shutemov Signed-off-by: Linus Torvalds

Merge tag 'irq-urgent-2021-07-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2021-07-11T18:17:57+00:00

Pull irq fixes from Ingo Molnar: "Two fixes: - Fix a MIPS IRQ handling RCU bug - Remove a DocBook annotation for a parameter that doesn't exist anymore" * tag 'irq-urgent-2021-07-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: irqchip/mips: Fix RCU violation when using irqdomain lookup on interrupt entry genirq/irqdesc: Drop excess kernel-doc entry @lookup

Merge tag 'sched-urgent-2021-07-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2021-07-11T18:13:57+00:00

Pull scheduler fixes from Ingo Molnar: "Three fixes: - Fix load tracking bug/inconsistency - Fix a sporadic CFS bandwidth constraints enforcement bug - Fix a uclamp utilization tracking bug for newly woken tasks" * tag 'sched-urgent-2021-07-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/uclamp: Ignore max aggregation if rq is idle sched/fair: Fix CFS bandwidth hrtimer expiry type sched/fair: Sync load_sum with load_avg after dequeue

Merge tag 'perf-urgent-2021-07-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2021-07-11T18:10:48+00:00

Pull perf fixes from Ingo Molnar: "A fix and a hardware-enablement addition: - Robustify uncore_snbep's skx_iio_set_mapping()'s error cleanup - Add cstate event support for Intel ICELAKE_X and ICELAKE_D" * tag 'perf-urgent-2021-07-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/x86/intel/uncore: Clean up error handling path of iio mapping perf/x86/cstate: Add ICELAKE_X and ICELAKE_D support

Merge tag 'locking-urgent-2021-07-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2021-07-11T18:06:09+00:00

Pull locking fixes from Ingo Molnar: - Fix a Sparc crash - Fix a number of objtool warnings - Fix /proc/lockdep output on certain configs - Restore a kprobes fail-safe * tag 'locking-urgent-2021-07-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: locking/atomic: sparc: Fix arch_cmpxchg64_local() kprobe/static_call: Restore missing static_call_text_reserved() static_call: Fix static_call_text_reserved() vs __init jump_label: Fix jump_label_text_reserved() vs __init locking/lockdep: Fix meaningless /proc/lockdep output of lock classes on !CONFIG_PROVE_LOCKING

Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

2021-07-11T17:59:53+00:00

Pull more SCSI updates from James Bottomley: "This is a set of minor fixes and clean ups in the core and various drivers. The only core change in behaviour is the I/O retry for spinup notify, but that shouldn't impact anything other than the failing case" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (23 commits) scsi: virtio_scsi: Add validation for residual bytes from response scsi: ipr: System crashes when seeing type 20 error scsi: core: Retry I/O for Notify (Enable Spinup) Required error scsi: mpi3mr: Fix warnings reported by smatch scsi: qedf: Add check to synchronize abort and flush scsi: MAINTAINERS: Add mpi3mr driver maintainers scsi: libfc: Fix array index out of bound exception scsi: mvsas: Use DEVICE_ATTR_RO()/RW() macro scsi: megaraid_mbox: Use DEVICE_ATTR_ADMIN_RO() macro scsi: qedf: Use DEVICE_ATTR_RO() macro scsi: qedi: Use DEVICE_ATTR_RO() macro scsi: message: mptfc: Switch from pci_ to dma_ API scsi: be2iscsi: Fix some missing space in some messages scsi: be2iscsi: Fix an error handling path in beiscsi_dev_probe() scsi: ufs: Fix build warning without CONFIG_PM scsi: bnx2fc: Remove meaningless bnx2fc_abts_cleanup() return value assignment scsi: qla2xxx: Add heartbeat check scsi: virtio_scsi: Do not overwrite SCSI status scsi: libsas: Add LUN number check in .slave_alloc callback scsi: core: Inline scsi_mq_alloc_queue() ...