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2024-07-22Merge tag 'for-6.11/block-20240722' of git://git.kernel.dk/linuxLinus Torvalds4-2/+11
Pull more block updates from Jens Axboe: - MD fixes via Song: - md-cluster fixes (Heming Zhao) - raid1 fix (Mateusz Jończyk) - s390/dasd module description (Jeff) - Series cleaning up and hardening the blk-mq debugfs flag handling (John, Christoph) - blk-cgroup cleanup (Xiu) - Error polled IO attempts if backend doesn't support it (hexue) - Fix for an sbitmap hang (Yang) * tag 'for-6.11/block-20240722' of git://git.kernel.dk/linux: (23 commits) blk-cgroup: move congestion_count to struct blkcg sbitmap: fix io hung due to race on sbitmap_word::cleared block: avoid polling configuration errors block: Catch possible entries missing from rqf_name[] block: Simplify definition of RQF_NAME() block: Use enum to define RQF_x bit indexes block: Catch possible entries missing from cmd_flag_name[] block: Catch possible entries missing from alloc_policy_name[] block: Catch possible entries missing from hctx_flag_name[] block: Catch possible entries missing from hctx_state_name[] block: Catch possible entries missing from blk_queue_flag_name[] block: Make QUEUE_FLAG_x as an enum block: Relocate BLK_MQ_MAX_DEPTH block: Relocate BLK_MQ_CPU_WORK_BATCH block: remove QUEUE_FLAG_STOPPED block: Add missing entry to hctx_flag_name[] block: Add zone write plugging entry to rqf_name[] block: Add missing entries from cmd_flag_name[] s390/dasd: fix error checks in dasd_copy_pair_store() s390/dasd: add missing MODULE_DESCRIPTION() macros ...
2024-07-19Merge tag 's390-6.11-1' of ↵Linus Torvalds1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 updates from Vasily Gorbik: - Remove restrictions on PAI NNPA and crypto counters, enabling concurrent per-task and system-wide sampling and counting events - Switch to GENERIC_CPU_DEVICES by setting up the CPU present mask in the architecture code and letting the generic code handle CPU bring-up - Add support for the diag204 busy indication facility to prevent undesirable blocking during hypervisor logical CPU utilization queries. Implement results caching - Improve the handling of Store Data SCLP events by suppressing unnecessary warning, preventing buffer release in I/O during failures, and adding timeout handling for Store Data requests to address potential firmware issues - Provide optimized __arch_hweight*() implementations - Remove the unnecessary CPU KOBJ_CHANGE uevents generated during topology updates, as they are unused and also not present on other architectures - Cleanup atomic_ops, optimize __atomic_set() for small values and __atomic_cmpxchg_bool() for compilers supporting flag output constraint - Couple of cleanups for KVM: - Move and improve KVM struct definitions for DAT tables from gaccess.c to a new header - Pass the asce as parameter to sie64a() - Make the crdte() and cspg() page table handling wrappers return a boolean to indicate success, like the other existing "compare and swap" wrappers - Add documentation for HWCAP flags - Switch to obtaining total RAM pages from memblock instead of totalram_pages() during mm init, to ensure correct calculation of zero page size, when defer_init is enabled - Refactor lowcore access and switch to using the get_lowcore() function instead of the S390_lowcore macro - Cleanups for PG_arch_1 and folio handling in UV and hugetlb code - Add missing MODULE_DESCRIPTION() macros - Fix VM_FAULT_HWPOISON handling in do_exception() * tag 's390-6.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (54 commits) s390/mm: Fix VM_FAULT_HWPOISON handling in do_exception() s390/kvm: Move bitfields for dat tables s390/entry: Pass the asce as parameter to sie64a() s390/sthyi: Use cached data when diag is busy s390/sthyi: Move diag operations s390/hypfs_diag: Diag204 busy loop s390/diag: Add busy-indication-facility requirements s390/diag: Diag204 add busy return errno s390/diag: Return errno's from diag204 s390/sclp: Diag204 busy indication facility detection s390/atomic_ops: Make use of flag output constraint s390/atomic_ops: Improve __atomic_set() for small values s390/atomic_ops: Use symbolic names s390/smp: Switch to GENERIC_CPU_DEVICES s390/hwcaps: Add documentation for HWCAP flags s390/pgtable: Make crdte() and cspg() return a value s390/topology: Remove CPU KOBJ_CHANGE uevents s390/sclp: Add timeout to Store Data requests s390/sclp: Prevent release of buffer in I/O s390/sclp: Suppress unnecessary Store Data warning ...
2024-07-16Merge tag 'for-6.11/block-20240710' of git://git.kernel.dk/linuxLinus Torvalds3-7/+1
Pull block updates from Jens Axboe: - NVMe updates via Keith: - Device initialization memory leak fixes (Keith) - More constants defined (Weiwen) - Target debugfs support (Hannes) - PCIe subsystem reset enhancements (Keith) - Queue-depth multipath policy (Redhat and PureStorage) - Implement get_unique_id (Christoph) - Authentication error fixes (Gaosheng) - MD updates via Song - sync_action fix and refactoring (Yu Kuai) - Various small fixes (Christoph Hellwig, Li Nan, and Ofir Gal, Yu Kuai, Benjamin Marzinski, Christophe JAILLET, Yang Li) - Fix loop detach/open race (Gulam) - Fix lower control limit for blk-throttle (Yu) - Add module descriptions to various drivers (Jeff) - Add support for atomic writes for block devices, and statx reporting for same. Includes SCSI and NVMe (John, Prasad, Alan) - Add IO priority information to block trace points (Dongliang) - Various zone improvements and tweaks (Damien) - mq-deadline tag reservation improvements (Bart) - Ignore direct reclaim swap writes in writeback throttling (Baokun) - Block integrity improvements and fixes (Anuj) - Add basic support for rust based block drivers. Has a dummy null_blk variant for now (Andreas) - Series converting driver settings to queue limits, and cleanups and fixes related to that (Christoph) - Cleanup for poking too deeply into the bvec internals, in preparation for DMA mapping API changes (Christoph) - Various minor tweaks and fixes (Jiapeng, John, Kanchan, Mikulas, Ming, Zhu, Damien, Christophe, Chaitanya) * tag 'for-6.11/block-20240710' of git://git.kernel.dk/linux: (206 commits) floppy: add missing MODULE_DESCRIPTION() macro loop: add missing MODULE_DESCRIPTION() macro ublk_drv: add missing MODULE_DESCRIPTION() macro xen/blkback: add missing MODULE_DESCRIPTION() macro block/rnbd: Constify struct kobj_type block: take offset into account in blk_bvec_map_sg again block: fix get_max_segment_size() warning loop: Don't bother validating blocksize virtio_blk: Don't bother validating blocksize null_blk: Don't bother validating blocksize block: Validate logical block size in blk_validate_limits() virtio_blk: Fix default logical block size fallback nvmet-auth: fix nvmet_auth hash error handling nvme: implement ->get_unique_id block: pass a phys_addr_t to get_max_segment_size block: add a bvec_phys helper blk-lib: check for kill signal in ioctl BLKZEROOUT block: limit the Write Zeroes to manually writing zeroes fallback block: refacto blkdev_issue_zeroout block: move read-only and supported checks into (__)blkdev_issue_zeroout ...
2024-07-15s390/dasd: fix error checks in dasd_copy_pair_store()Carlos López1-2/+8
dasd_add_busid() can return an error via ERR_PTR() if an allocation fails. However, two callsites in dasd_copy_pair_store() do not check the result, potentially resulting in a NULL pointer dereference. Fix this by checking the result with IS_ERR() and returning the error up the stack. Fixes: a91ff09d39f9b ("s390/dasd: add copy pair setup") Signed-off-by: Carlos López <clopez@suse.de> Signed-off-by: Stefan Haberland <sth@linux.ibm.com> Link: https://lore.kernel.org/r/20240715112434.2111291-3-sth@linux.ibm.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-07-15s390/dasd: add missing MODULE_DESCRIPTION() macrosJeff Johnson3-0/+3
With ARCH=s390, make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/s390/block/dasd_diag_mod.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/s390/block/dasd_eckd_mod.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/s390/block/dasd_fba_mod.o Add the missing invocations of the MODULE_DESCRIPTION() macro. Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Signed-off-by: Stefan Haberland <sth@linux.ibm.com> Link: https://lore.kernel.org/r/20240715112434.2111291-2-sth@linux.ibm.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-07-03s390/dasd: Fix invalid dereferencing of indirect CCW data pointerStefan Haberland2-3/+3
Fix invalid dereferencing of indirect CCW data pointer in dasd_eckd_dump_sense() that leads to a kernel panic in error cases. When using indirect addressing for DASD CCWs (IDAW) the CCW CDA pointer does not contain the data address itself but a pointer to the IDAL. This needs to be translated from physical to virtual as well before using it. This dereferencing is also used for dasd_page_cache and also fixed although it is very unlikely that this code path ever gets used. Fixes: c0bd39601c13 ("s390/dasd: use new address translation helpers") Cc: stable@vger.kernel.org Signed-off-by: Stefan Haberland <sth@linux.ibm.com> Reviewed-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2024-06-28s390/dcssblk: Add missing MODULE_DESCRIPTION() macroJeff Johnson1-0/+1
With ARCH=s390, make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/s390/block/dcssblk.o Add the missing invocation of the MODULE_DESCRIPTION() macro. Acked-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Link: https://lore.kernel.org/r/20240615-md-s390-drivers-s390-block-dcssblk-v1-1-d9d19703abcb@quicinc.com Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
2024-06-19block: move the dax flag to queue_limitsChristoph Hellwig1-1/+1
Move the dax flag into the queue_limits feature field so that it can be set atomically with the queue frozen. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Damien Le Moal <dlemoal@kernel.org> Reviewed-by: Hannes Reinecke <hare@suse.de> Link: https://lore.kernel.org/r/20240617060532.127975-21-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-06-19block: move the add_random flag to queue_limitsChristoph Hellwig1-4/+0
Move the add_random flag into the queue_limits feature field so that it can be set atomically with the queue frozen. Note that this also removes code from dm to clear the flag based on the underlying devices, which can't be reached as dm devices will always start out without the flag set. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Damien Le Moal <dlemoal@kernel.org> Reviewed-by: Hannes Reinecke <hare@suse.de> Link: https://lore.kernel.org/r/20240617060532.127975-16-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-06-19block: move the nonrot flag to queue_limitsChristoph Hellwig2-2/+0
Move the nonrot flag into the queue_limits feature field so that it can be set atomically with the queue frozen. Use the chance to switch to defaulting to non-rotational and require the driver to opt into rotational, which matches the polarity of the sysfs interface. For the z2ram, ps3vram, 2x memstick, ubiblock and dcssblk the new rotational flag is not set as they clearly are not rotational despite this being a behavior change. There are some other drivers that unconditionally set the rotational flag to keep the existing behavior as they arguably can be used on rotational devices even if that is probably not their main use today (e.g. virtio_blk and drbd). The flag is automatically inherited in blk_stack_limits matching the existing behavior in dm and md. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Damien Le Moal <dlemoal@kernel.org> Reviewed-by: Hannes Reinecke <hare@suse.de> Link: https://lore.kernel.org/r/20240617060532.127975-15-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-05-21Merge tag 'pull-bd_inode-1' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull bdev bd_inode updates from Al Viro: "Replacement of bdev->bd_inode with sane(r) set of primitives by me and Yu Kuai" * tag 'pull-bd_inode-1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: RIP ->bd_inode dasd_format(): killing the last remaining user of ->bd_inode nilfs_attach_log_writer(): use ->bd_mapping->host instead of ->bd_inode block/bdev.c: use the knowledge of inode/bdev coallocation gfs2: more obvious initializations of mapping->host fs/buffer.c: massage the remaining users of ->bd_inode to ->bd_mapping blk_ioctl_{discard,zeroout}(): we only want ->bd_inode->i_mapping here... grow_dev_folio(): we only want ->bd_inode->i_mapping there use ->bd_mapping instead of ->bd_inode->i_mapping block_device: add a pointer to struct address_space (page cache of bdev) missing helpers: bdev_unhash(), bdev_drop() block: move two helpers into bdev.c block2mtd: prevent direct access of bd_inode dm-vdo: use bdev_nr_bytes(bdev) instead of i_size_read(bdev->bd_inode) blkdev_write_iter(): saner way to get inode and bdev bcachefs: remove dead function bdev_sectors() ext4: remove block_device_ejected() erofs_buf: store address_space instead of inode erofs: switch erofs_bread() to passing offset instead of block number
2024-05-03dasd_format(): killing the last remaining user of ->bd_inodeAl Viro1-1/+1
What happens here is almost certainly wrong. However, * it's the last remaining user of ->bd_inode anywhere in the tree * it is *NOT* a fast path by any stretch of imagination Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2024-04-12scsi: block: Remove now unused queue limits helpersChristoph Hellwig1-3/+3
Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20240409143748.980206-24-hch@lst.de Reviewed-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: John Garry <john.g.garry@oracle.com> Reviewed-by: Damien Le Moal <dlemoal@kernel.org> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2024-03-19Merge tag 's390-6.9-2' of ↵Linus Torvalds8-93/+91
git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull more s390 updates from Heiko Carstens: - Various virtual vs physical address usage fixes - Add new bitwise types and helper functions and use them in s390 specific drivers and code to make it easier to find virtual vs physical address usage bugs. Right now virtual and physical addresses are identical for s390, except for module, vmalloc, and similar areas. This will be changed, hopefully with the next merge window, so that e.g. the kernel image and modules will be located close to each other, allowing for direct branches and also for some other simplifications. As a prerequisite this requires to fix all misuses of virtual and physical addresses. As it turned out people are so used to the concept that virtual and physical addresses are the same, that new bugs got added to code which was already fixed. In order to avoid that even more code gets merged which adds such bugs add and use new bitwise types, so that sparse can be used to find such usage bugs. Most likely the new types can go away again after some time - Provide a simple ARCH_HAS_DEBUG_VIRTUAL implementation - Fix kprobe branch handling: if an out-of-line single stepped relative branch instruction has a target address within a certain address area in the entry code, the program check handler may incorrectly execute cleanup code as if KVM code was executed, leading to crashes - Fix reference counting of zcrypt card objects - Various other small fixes and cleanups * tag 's390-6.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (41 commits) s390/entry: compare gmap asce to determine guest/host fault s390/entry: remove OUTSIDE macro s390/entry: add CIF_SIE flag and remove sie64a() address check s390/cio: use while (i--) pattern to clean up s390/raw3270: make class3270 constant s390/raw3270: improve raw3270_init() readability s390/tape: make tape_class constant s390/vmlogrdr: make vmlogrdr_class constant s390/vmur: make vmur_class constant s390/zcrypt: make zcrypt_class constant s390/mm: provide simple ARCH_HAS_DEBUG_VIRTUAL support s390/vfio_ccw_cp: use new address translation helpers s390/iucv: use new address translation helpers s390/ctcm: use new address translation helpers s390/lcs: use new address translation helpers s390/qeth: use new address translation helpers s390/zfcp: use new address translation helpers s390/tape: fix virtual vs physical address confusion s390/3270: use new address translation helpers s390/3215: use new address translation helpers ...
2024-03-15Merge tag 'mm-stable-2024-03-13-20-04' of ↵Linus Torvalds1-5/+6
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull MM updates from Andrew Morton: - Sumanth Korikkar has taught s390 to allocate hotplug-time page frames from hotplugged memory rather than only from main memory. Series "implement "memmap on memory" feature on s390". - More folio conversions from Matthew Wilcox in the series "Convert memcontrol charge moving to use folios" "mm: convert mm counter to take a folio" - Chengming Zhou has optimized zswap's rbtree locking, providing significant reductions in system time and modest but measurable reductions in overall runtimes. The series is "mm/zswap: optimize the scalability of zswap rb-tree". - Chengming Zhou has also provided the series "mm/zswap: optimize zswap lru list" which provides measurable runtime benefits in some swap-intensive situations. - And Chengming Zhou further optimizes zswap in the series "mm/zswap: optimize for dynamic zswap_pools". Measured improvements are modest. - zswap cleanups and simplifications from Yosry Ahmed in the series "mm: zswap: simplify zswap_swapoff()". - In the series "Add DAX ABI for memmap_on_memory", Vishal Verma has contributed several DAX cleanups as well as adding a sysfs tunable to control the memmap_on_memory setting when the dax device is hotplugged as system memory. - Johannes Weiner has added the large series "mm: zswap: cleanups", which does that. - More DAMON work from SeongJae Park in the series "mm/damon: make DAMON debugfs interface deprecation unignorable" "selftests/damon: add more tests for core functionalities and corner cases" "Docs/mm/damon: misc readability improvements" "mm/damon: let DAMOS feeds and tame/auto-tune itself" - In the series "mm/mempolicy: weighted interleave mempolicy and sysfs extension" Rakie Kim has developed a new mempolicy interleaving policy wherein we allocate memory across nodes in a weighted fashion rather than uniformly. This is beneficial in heterogeneous memory environments appearing with CXL. - Christophe Leroy has contributed some cleanup and consolidation work against the ARM pagetable dumping code in the series "mm: ptdump: Refactor CONFIG_DEBUG_WX and check_wx_pages debugfs attribute". - Luis Chamberlain has added some additional xarray selftesting in the series "test_xarray: advanced API multi-index tests". - Muhammad Usama Anjum has reworked the selftest code to make its human-readable output conform to the TAP ("Test Anything Protocol") format. Amongst other things, this opens up the use of third-party tools to parse and process out selftesting results. - Ryan Roberts has added fork()-time PTE batching of THP ptes in the series "mm/memory: optimize fork() with PTE-mapped THP". Mainly targeted at arm64, this significantly speeds up fork() when the process has a large number of pte-mapped folios. - David Hildenbrand also gets in on the THP pte batching game in his series "mm/memory: optimize unmap/zap with PTE-mapped THP". It implements batching during munmap() and other pte teardown situations. The microbenchmark improvements are nice. - And in the series "Transparent Contiguous PTEs for User Mappings" Ryan Roberts further utilizes arm's pte's contiguous bit ("contpte mappings"). Kernel build times on arm64 improved nicely. Ryan's series "Address some contpte nits" provides some followup work. - In the series "mm/hugetlb: Restore the reservation" Breno Leitao has fixed an obscure hugetlb race which was causing unnecessary page faults. He has also added a reproducer under the selftest code. - In the series "selftests/mm: Output cleanups for the compaction test", Mark Brown did what the title claims. - Kinsey Ho has added the series "mm/mglru: code cleanup and refactoring". - Even more zswap material from Nhat Pham. The series "fix and extend zswap kselftests" does as claimed. - In the series "Introduce cpu_dcache_is_aliasing() to fix DAX regression" Mathieu Desnoyers has cleaned up and fixed rather a mess in our handling of DAX on archiecctures which have virtually aliasing data caches. The arm architecture is the main beneficiary. - Lokesh Gidra's series "per-vma locks in userfaultfd" provides dramatic improvements in worst-case mmap_lock hold times during certain userfaultfd operations. - Some page_owner enhancements and maintenance work from Oscar Salvador in his series "page_owner: print stacks and their outstanding allocations" "page_owner: Fixup and cleanup" - Uladzislau Rezki has contributed some vmalloc scalability improvements in his series "Mitigate a vmap lock contention". It realizes a 12x improvement for a certain microbenchmark. - Some kexec/crash cleanup work from Baoquan He in the series "Split crash out from kexec and clean up related config items". - Some zsmalloc maintenance work from Chengming Zhou in the series "mm/zsmalloc: fix and optimize objects/page migration" "mm/zsmalloc: some cleanup for get/set_zspage_mapping()" - Zi Yan has taught the MM to perform compaction on folios larger than order=0. This a step along the path to implementaton of the merging of large anonymous folios. The series is named "Enable >0 order folio memory compaction". - Christoph Hellwig has done quite a lot of cleanup work in the pagecache writeback code in his series "convert write_cache_pages() to an iterator". - Some modest hugetlb cleanups and speedups in Vishal Moola's series "Handle hugetlb faults under the VMA lock". - Zi Yan has changed the page splitting code so we can split huge pages into sizes other than order-0 to better utilize large folios. The series is named "Split a folio to any lower order folios". - David Hildenbrand has contributed the series "mm: remove total_mapcount()", a cleanup. - Matthew Wilcox has sought to improve the performance of bulk memory freeing in his series "Rearrange batched folio freeing". - Gang Li's series "hugetlb: parallelize hugetlb page init on boot" provides large improvements in bootup times on large machines which are configured to use large numbers of hugetlb pages. - Matthew Wilcox's series "PageFlags cleanups" does that. - Qi Zheng's series "minor fixes and supplement for ptdesc" does that also. S390 is affected. - Cleanups to our pagemap utility functions from Peter Xu in his series "mm/treewide: Replace pXd_large() with pXd_leaf()". - Nico Pache has fixed a few things with our hugepage selftests in his series "selftests/mm: Improve Hugepage Test Handling in MM Selftests". - Also, of course, many singleton patches to many things. Please see the individual changelogs for details. * tag 'mm-stable-2024-03-13-20-04' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (435 commits) mm/zswap: remove the memcpy if acomp is not sleepable crypto: introduce: acomp_is_async to expose if comp drivers might sleep memtest: use {READ,WRITE}_ONCE in memory scanning mm: prohibit the last subpage from reusing the entire large folio mm: recover pud_leaf() definitions in nopmd case selftests/mm: skip the hugetlb-madvise tests on unmet hugepage requirements selftests/mm: skip uffd hugetlb tests with insufficient hugepages selftests/mm: dont fail testsuite due to a lack of hugepages mm/huge_memory: skip invalid debugfs new_order input for folio split mm/huge_memory: check new folio order when split a folio mm, vmscan: retry kswapd's priority loop with cache_trim_mode off on failure mm: add an explicit smp_wmb() to UFFDIO_CONTINUE mm: fix list corruption in put_pages_list mm: remove folio from deferred split list before uncharging it filemap: avoid unnecessary major faults in filemap_fault() mm,page_owner: drop unnecessary check mm,page_owner: check for null stack_record before bumping its refcount mm: swap: fix race between free_swap_and_cache() and swapoff() mm/treewide: align up pXd_leaf() retval across archs mm/treewide: drop pXd_large() ...
2024-03-13s390/scm: use new address translation helpersHeiko Carstens1-3/+3
Use virt_to_dma64() and friends to properly convert virtual to physical and physical to virtual addresses so that "make C=1" does not generate any warnings anymore. Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2024-03-13s390/cio,idal: fix virtual vs physical address confusionHeiko Carstens2-11/+9
Fix virtual vs physical address confusion. This does not fix a bug since virtual and physical address spaces are currently the same. Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2024-03-13s390/dasd: use new address translation helpersHeiko Carstens6-76/+76
Use virt_to_dma32() and friends to properly convert virtual to physical and physical to virtual addresses so that "make C=1" does not generate any warnings anymore. Reviewed-by: Stefan Haberland <sth@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2024-03-13s390/dasd: remove superfluous virt_to_phys() conversionHeiko Carstens1-2/+2
Only the last 12 bits of virtual / physical addresses are used when masking with IDA_BLOCK_SIZE - 1. Given that the bits are the same regardless of virtual or physical address, remove the virtual to physical address conversion. Reviewed-by: Stefan Haberland <sth@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2024-03-13s390/dasd_eckd: fix virtual vs physical address confusionHeiko Carstens2-8/+8
Fix virtual vs physical address confusion. This does not fix a bug since virtual and physical address spaces are currently the same. Reviewed-by: Stefan Haberland <sth@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2024-03-13s390/dcssblk: fix virtual vs physical address confusionGerald Schaefer1-1/+1
Fix virtual vs physical address confusion. This does not fix a bug since virtual and physical address spaces are currently the same. dax_direct_access() should receive a virtual kernel address in kaddr. Reviewed-by: Heiko Carstens <hca@linux.ibm.com> Acked-by: Alexander Gordeev <agordeev@linux.ibm.com> Signed-off-by: Gerald Schaefer <gerald.schaefer@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2024-03-11Merge tag 'for-6.9/block-20240310' of git://git.kernel.dk/linuxLinus Torvalds15-467/+242
Pull block updates from Jens Axboe: - MD pull requests via Song: - Cleanup redundant checks (Yu Kuai) - Remove deprecated headers (Marc Zyngier, Song Liu) - Concurrency fixes (Li Lingfeng) - Memory leak fix (Li Nan) - Refactor raid1 read_balance (Yu Kuai, Paul Luse) - Clean up and fix for md_ioctl (Li Nan) - Other small fixes (Gui-Dong Han, Heming Zhao) - MD atomic limits (Christoph) - NVMe pull request via Keith: - RDMA target enhancements (Max) - Fabrics fixes (Max, Guixin, Hannes) - Atomic queue_limits usage (Christoph) - Const use for class_register (Ricardo) - Identification error handling fixes (Shin'ichiro, Keith) - Improvement and cleanup for cached request handling (Christoph) - Moving towards atomic queue limits. Core changes and driver bits so far (Christoph) - Fix UAF issues in aoeblk (Chun-Yi) - Zoned fix and cleanups (Damien) - s390 dasd cleanups and fixes (Jan, Miroslav) - Block issue timestamp caching (me) - noio scope guarding for zoned IO (Johannes) - block/nvme PI improvements (Kanchan) - Ability to terminate long running discard loop (Keith) - bdev revalidation fix (Li) - Get rid of old nr_queues hack for kdump kernels (Ming) - Support for async deletion of ublk (Ming) - Improve IRQ bio recycling (Pavel) - Factor in CPU capacity for remote vs local completion (Qais) - Add shared_tags configfs entry for null_blk (Shin'ichiro - Fix for a regression in page refcounts introduced by the folio unification (Tony) - Misc fixes and cleanups (Arnd, Colin, John, Kunwu, Li, Navid, Ricardo, Roman, Tang, Uwe) * tag 'for-6.9/block-20240310' of git://git.kernel.dk/linux: (221 commits) block: partitions: only define function mac_fix_string for CONFIG_PPC_PMAC block/swim: Convert to platform remove callback returning void cdrom: gdrom: Convert to platform remove callback returning void block: remove disk_stack_limits md: remove mddev->queue md: don't initialize queue limits md/raid10: use the atomic queue limit update APIs md/raid5: use the atomic queue limit update APIs md/raid1: use the atomic queue limit update APIs md/raid0: use the atomic queue limit update APIs md: add queue limit helpers md: add a mddev_is_dm helper md: add a mddev_add_trace_msg helper md: add a mddev_trace_remap helper bcache: move calculation of stripe_size and io_opt into bcache_device_init virtio_blk: Do not use disk_set_max_open/active_zones() aoe: fix the potential use-after-free problem in aoecmd_cfg_pkts block: move capacity validation to blkpg_do_ioctl() block: prevent division by zero in blk_rq_stat_sum() drbd: atomically update queue limits in drbd_reconsider_queue_parameters ...
2024-03-06dasd: use the atomic queue limits APIChristoph Hellwig2-18/+24
Pass the constant limits directly to blk_mq_alloc_disk, set the nonrot flag there as well, and then use the commit API to change the transfer size and logical block size dependent values. This relies on the assumption that no I/O can be pending before the devices moves into the ready state and doesn't need extra freezing for changes to the queue limits. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Stefan Haberland <sth@linux.ibm.com> Link: https://lore.kernel.org/r/20240228133742.806274-4-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-03-06dasd: move queue setup to common codeChristoph Hellwig5-77/+42
Most of the code in setup_blk_queue is shared between all disciplines. Move it to common code and leave a method to query the maximum number of transferable blocks, and a flag to indicate discard support. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Stefan Haberland <sth@linux.ibm.com> Link: https://lore.kernel.org/r/20240228133742.806274-3-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-03-06dasd: cleamup dasd_state_basic_to_readyChristoph Hellwig1-28/+26
Reflow dasd_state_basic_to_ready a bit to make it easier to modify. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Stefan Haberland <sth@linux.ibm.com> Link: https://lore.kernel.org/r/20240228133742.806274-2-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-02-25s390: port block device access to fileChristian Brauner4-25/+25
Link: https://lore.kernel.org/r/20240123-vfs-bdev-file-v2-16-adbd023e19cc@kernel.org Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Christian Brauner <brauner@kernel.org>
2024-02-23dcssblk: handle alloc_dax() -EOPNOTSUPP failureMathieu Desnoyers1-5/+6
In preparation for checking whether the architecture has data cache aliasing within alloc_dax(), modify the error handling of dcssblk dcssblk_add_store() to handle alloc_dax() -EOPNOTSUPP failures. Considering that s390 is not a data cache aliasing architecture, and considering that DCSSBLK selects DAX, a return value of -EOPNOTSUPP from alloc_dax() should make dcssblk_add_store() fail. Link: https://lkml.kernel.org/r/20240215144633.96437-6-mathieu.desnoyers@efficios.com Fixes: d92576f1167c ("dax: does not work correctly with virtual aliasing caches") Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Reviewed-by: Dan Williams <dan.j.williams@intel.com> Acked-by: Heiko Carstens <hca@linux.ibm.com> Cc: Alasdair Kergon <agk@redhat.com> Cc: Mike Snitzer <snitzer@kernel.org> Cc: Mikulas Patocka <mpatocka@redhat.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Vishal Verma <vishal.l.verma@intel.com> Cc: Dave Jiang <dave.jiang@intel.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Russell King <linux@armlinux.org.uk> Cc: Christoph Hellwig <hch@lst.de> Cc: Dave Chinner <david@fromorbit.com> Cc: kernel test robot <lkp@intel.com> Cc: Michael Sclafani <dm-devel@lists.linux.dev> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-02-20scm_blk: pass queue_limits to blk_mq_alloc_diskChristoph Hellwig1-8/+9
Pass the few limits scm_block imposes directly to blk_mq_alloc_disk instead of setting them one at a time. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20240215070300.2200308-16-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-02-20dcssblk: pass queue_limits to blk_mq_alloc_diskChristoph Hellwig1-2/+4
Pass the queue limits directly to blk_alloc_disk instead of setting them one at a time. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dan Williams <dan.j.williams@intel.com> Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> Link: https://lore.kernel.org/r/20240215071055.2201424-10-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-02-20block: pass a queue_limits argument to blk_alloc_diskChristoph Hellwig1-3/+3
Pass a queue_limits to blk_alloc_disk and apply it if non-NULL. This will allow allocating queues with valid queue limits instead of setting the values one at a time later. Also change blk_alloc_disk to return an ERR_PTR instead of just NULL which can't distinguish errors. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dan Williams <dan.j.williams@intel.com> Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> Link: https://lore.kernel.org/r/20240215071055.2201424-2-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-02-13block: pass a queue_limits argument to blk_mq_alloc_diskChristoph Hellwig2-2/+2
Pass a queue_limits to blk_mq_alloc_disk and apply it if non-NULL. This will allow allocating queues with valid queue limits instead of setting the values one at a time later. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Keith Busch <kbusch@kernel.org> Reviewed-by: John Garry <john.g.garry@oracle.com> Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com> Reviewed-by: Ming Lei <ming.lei@redhat.com> Reviewed-by: Damien Le Moal <dlemoal@kernel.org> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Link: https://lore.kernel.org/r/20240213073425.1621680-11-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-02-09s390/dasd: fix double module refcount decrementMiroslav Franc1-4/+1
Once the discipline is associated with the device, deleting the device takes care of decrementing the module's refcount. Doing it manually on this error path causes refcount to artificially decrease on each error while it should just stay the same. Fixes: c020d722b110 ("s390/dasd: fix panic during offline processing") Signed-off-by: Miroslav Franc <mfranc@suse.cz> Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com> Signed-off-by: Stefan Haberland <sth@linux.ibm.com> Link: https://lore.kernel.org/r/20240209124522.3697827-3-sth@linux.ibm.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-02-09s390/dasd: Improve ERP error messagesJan Höppner1-38/+13
Some ERP errors still share the same message format and only add different reason codes to it. These reason codes don't have any meaning anymore. Make the individual error messages more explicit and remove the reason codes altogether. Comments around the error messages are also removed as they provide no additional value anymore with more explicit messages. Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com> Reviewed-by: Stefan Haberland <sth@linux.ibm.com> Signed-off-by: Stefan Haberland <sth@linux.ibm.com> Link: https://lore.kernel.org/r/20240209124522.3697827-2-sth@linux.ibm.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-02-08s390/dasd: Use dev_*() for device log messagesJan Höppner1-26/+24
All log messages in dasd.c use the printk variants of pr_*(). They all add the name of the affected device manually to the log message. This can be simplified by using the dev_*() variants of printk, which include the device information and make a separate call to dev_name() unnecessary. The KMSG_COMPONENT and the pr_fmt() definition can be dropped. Note that this removes the "dasd: " prefix from the one pr_info() call in dasd_init(). However, the log message already provides all relevant information. Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com> Reviewed-by: Stefan Haberland <sth@linux.ibm.com> Signed-off-by: Stefan Haberland <sth@linux.ibm.com> Link: https://lore.kernel.org/r/20240208164248.540985-10-sth@linux.ibm.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-02-08s390/dasd: Remove PRINTK_HEADER and KMSG_COMPONENT definitionsJan Höppner11-55/+1
PRINTK_HEADER was mainly used to prefix log messages with the module name. Most components don't use this definition anymore. Either because there are no log messages being generated anymore, or pr_*() were replaced by dev_*(), which contains device and component information already. PRINTK_HEADER is also dropped in the function dasd_3990_erp_handle_match_erp() in dasd_3990_erp.c from a panic() call as panic() already provides all relevant information. KMSG_COMPONENT was mainly used to identify a component in a long gone kernel message catalog feature. Remove both definition since they're either not used or alternatives make the code slightly shorter and more readable. Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com> Reviewed-by: Stefan Haberland <sth@linux.ibm.com> Signed-off-by: Stefan Haberland <sth@linux.ibm.com> Link: https://lore.kernel.org/r/20240208164248.540985-9-sth@linux.ibm.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-02-08s390/dasd: Remove %p format specifier from error messagesJan Höppner3-23/+15
Printing pointer in error messages doesn't add any value since the addresses are hashed. Remove the %p format specifier and adapt the error messages slightly. Replace %p with %px in ERP to get the actual addresses since ERP is used for debugging purposes only anyway. Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com> Reviewed-by: Stefan Haberland <sth@linux.ibm.com> Signed-off-by: Stefan Haberland <sth@linux.ibm.com> Link: https://lore.kernel.org/r/20240208164248.540985-8-sth@linux.ibm.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-02-08s390/dasd: Use dev_err() over printk()Jan Höppner2-118/+76
To reduce the information required for the string generation in the sense dump functions, use the more concise dev_err() variant over printk(KERN_ERR, ...) to improve code readability. The dev_err() function provides the component and device name for free and the separate dev_name() calls as well as the PRINTK_HEADER can be dropped. Dropping PRINTK_HEADER removes the "dasd(eckd):" for all lines. Only the first line of a dev_err() call is prefixed with the component and device (e.g. "dasd-eckd 0.0.95d0:"). The format specifier for printed pointers is also changed to unhashed (%px) as this can help with debugging and servicing. Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com> Reviewed-by: Stefan Haberland <sth@linux.ibm.com> Signed-off-by: Stefan Haberland <sth@linux.ibm.com> Link: https://lore.kernel.org/r/20240208164248.540985-7-sth@linux.ibm.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-02-08s390/dasd: Remove unused message logging macrosJan Höppner1-26/+0
The macros DEV_MESSAGE, MESSAGE, DEV_MESSAGE_LOG, and MESSAGE_LOG, are not used and there is no history anymore of any usage. Remove them. Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com> Reviewed-by: Stefan Haberland <sth@linux.ibm.com> Signed-off-by: Stefan Haberland <sth@linux.ibm.com> Link: https://lore.kernel.org/r/20240208164248.540985-6-sth@linux.ibm.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-02-08s390/dasd: Move allocation error message to DBFJan Höppner1-4/+2
All error messages for a failling dasd_smalloc_request() call are logged via DBF, except one. There is no value in logging this particular allocation failure via dev_err(). Move the message to DBF, too, to be in line with the rest. Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com> Reviewed-by: Stefan Haberland <sth@linux.ibm.com> Signed-off-by: Stefan Haberland <sth@linux.ibm.com> Link: https://lore.kernel.org/r/20240208164248.540985-5-sth@linux.ibm.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-02-08s390/dasd: Remove unnecessary errorstring generationJan Höppner3-29/+8
In quite a few cases an errorstring is generated using snprintf() before it's passed to dev_err(). This indirection is unnecessary and all information can simply be passed directly to dev_err() instead. The errrorstring and ERRORLENGTH definitions are removed entirely. While at it, rephrase the error messages to provide more context where possible. Also, fix a few incorrectly used format specifier (e.g. %x02 -> %02x) in those messages. Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com> Reviewed-by: Stefan Haberland <sth@linux.ibm.com> Signed-off-by: Stefan Haberland <sth@linux.ibm.com> Link: https://lore.kernel.org/r/20240208164248.540985-4-sth@linux.ibm.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-02-08s390/dasd: Use sysfs_emit() over sprintf()Jan Höppner1-9/+9
sysfs_emit() should be used in show() functions. There are still a couple of functions that use sprintf(). Replace outstanding occurrences of sprintf() in all show() functions with sysfs_emit(). Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com> Reviewed-by: Stefan Haberland <sth@linux.ibm.com> Signed-off-by: Stefan Haberland <sth@linux.ibm.com> Link: https://lore.kernel.org/r/20240208164248.540985-3-sth@linux.ibm.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-02-08s390/dasd: Simplify uid string generationJan Höppner2-21/+7
There are two variants of the device uid string. One containing the virtual device unit information table (vduit) identifying the device as a virtual device located on a real device in a z/VM environment. The other variant does not contain those additional information. Simplify the string generation with a shorter check of an existing vduit embedded in the snprintf() calls. Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com> Reviewed-by: Stefan Haberland <sth@linux.ibm.com> Signed-off-by: Stefan Haberland <sth@linux.ibm.com> Link: https://lore.kernel.org/r/20240208164248.540985-2-sth@linux.ibm.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2024-01-09Merge tag 'mm-nonmm-stable-2024-01-09-10-33' of ↵Linus Torvalds1-6/+0
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull non-MM updates from Andrew Morton: "Quite a lot of kexec work this time around. Many singleton patches in many places. The notable patch series are: - nilfs2 folio conversion from Matthew Wilcox in 'nilfs2: Folio conversions for file paths'. - Additional nilfs2 folio conversion from Ryusuke Konishi in 'nilfs2: Folio conversions for directory paths'. - IA64 remnant removal in Heiko Carstens's 'Remove unused code after IA-64 removal'. - Arnd Bergmann has enabled the -Wmissing-prototypes warning everywhere in 'Treewide: enable -Wmissing-prototypes'. This had some followup fixes: - Nathan Chancellor has cleaned up the hexagon build in the series 'hexagon: Fix up instances of -Wmissing-prototypes'. - Nathan also addressed some s390 warnings in 's390: A couple of fixes for -Wmissing-prototypes'. - Arnd Bergmann addresses the same warnings for MIPS in his series 'mips: address -Wmissing-prototypes warnings'. - Baoquan He has made kexec_file operate in a top-down-fitting manner similar to kexec_load in the series 'kexec_file: Load kernel at top of system RAM if required' - Baoquan He has also added the self-explanatory 'kexec_file: print out debugging message if required'. - Some checkstack maintenance work from Tiezhu Yang in the series 'Modify some code about checkstack'. - Douglas Anderson has disentangled the watchdog code's logging when multiple reports are occurring simultaneously. The series is 'watchdog: Better handling of concurrent lockups'. - Yuntao Wang has contributed some maintenance work on the crash code in 'crash: Some cleanups and fixes'" * tag 'mm-nonmm-stable-2024-01-09-10-33' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (157 commits) crash_core: fix and simplify the logic of crash_exclude_mem_range() x86/crash: use SZ_1M macro instead of hardcoded value x86/crash: remove the unused image parameter from prepare_elf_headers() kdump: remove redundant DEFAULT_CRASH_KERNEL_LOW_SIZE scripts/decode_stacktrace.sh: strip unexpected CR from lines watchdog: if panicking and we dumped everything, don't re-enable dumping watchdog/hardlockup: use printk_cpu_sync_get_irqsave() to serialize reporting watchdog/softlockup: use printk_cpu_sync_get_irqsave() to serialize reporting watchdog/hardlockup: adopt softlockup logic avoiding double-dumps kexec_core: fix the assignment to kimage->control_page x86/kexec: fix incorrect end address passed to kernel_ident_mapping_init() lib/trace_readwrite.c:: replace asm-generic/io with linux/io nilfs2: cpfile: fix some kernel-doc warnings stacktrace: fix kernel-doc typo scripts/checkstack.pl: fix no space expression between sp and offset x86/kexec: fix incorrect argument passed to kexec_dprintk() x86/kexec: use pr_err() instead of kexec_dprintk() when an error occurs nilfs2: add missing set_freezable() for freezable kthread kernel: relay: remove relay_file_splice_read dead code, doesn't work docs: submit-checklist: remove all of "make namespacecheck" ...
2023-12-21Merge tag 's390-6.7-4' of ↵Linus Torvalds1-3/+4
git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 fixes from Alexander Gordeev: - Fix virtual vs physical address confusion in Storage Class Memory (SCM) block device driver. - Fix saving and restoring of FPU kernel context, which could lead to corruption of vector registers 8-15 - Update defconfigs * tag 's390-6.7-4' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390: update defconfigs s390/vx: fix save/restore of fpu kernel context s390/scm: fix virtual vs physical address confusion
2023-12-11s390/dasd: remove dasd_stats_generic_show()Nathan Chancellor1-6/+0
Patch series "s390: A couple of fixes for -Wmissing-prototypes". This series resolves a couple of -Wmissing-prototypes that I see in my builds of -next, even though the issues appear to be latent. This addresses issues which will be exposed by the later patch "Makefile.extrawarn: turn on missing-prototypes globally". This patch (of 2): With CONFIG_DASD_PROFILE=n, there is a warning that dasd_stats_generic_show() is missing a prototype: drivers/s390/block/dasd.c:1109:5: warning: no previous prototype for 'dasd_stats_generic_show' [-Wmissing-prototypes] 1109 | int dasd_stats_generic_show(struct seq_file *m, void *v) | ^~~~~~~~~~~~~~~~~~~~~~~ This function has been unused since its introduction in commit 4fa52aa7a82f ("[S390] dasd: add enhanced DASD statistics interface"), remove it to clear up the warning. Link: https://lkml.kernel.org/r/20231130-s390-missing-prototypes-v1-0-799d3cf07fb7@kernel.org Link: https://lkml.kernel.org/r/20231130-s390-missing-prototypes-v1-1-799d3cf07fb7@kernel.org Signed-off-by: Nathan Chancellor <nathan@kernel.org> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Christian Borntraeger <borntraeger@linux.ibm.com> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Jan Höppner <hoeppner@linux.ibm.com> Cc: Stefan Haberland <sth@linux.ibm.com> Cc: Sven Schnelle <svens@linux.ibm.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-12-08s390/scm: fix virtual vs physical address confusionVineeth Vijayan1-3/+4
Fix virtual vs physical address confusion (which currently are the same). Signed-off-by: Vineeth Vijayan <vneethv@linux.ibm.com> Reviewed-by: Peter Oberparleiter <oberpar@linux.ibm.com> Acked-by: Alexander Gordeev <agordeev@linux.ibm.com> Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
2023-11-20s390/dasd: protect device queue against concurrent accessJan Höppner1-11/+13
In dasd_profile_start() the amount of requests on the device queue are counted. The access to the device queue is unprotected against concurrent access. With a lot of parallel I/O, especially with alias devices enabled, the device queue can change while dasd_profile_start() is accessing the queue. In the worst case this leads to a kernel panic due to incorrect pointer accesses. Fix this by taking the device lock before accessing the queue and counting the requests. Additionally the check for a valid profile data pointer can be done earlier to avoid unnecessary locking in a hot path. Cc: <stable@vger.kernel.org> Fixes: 4fa52aa7a82f ("[S390] dasd: add enhanced DASD statistics interface") Reviewed-by: Stefan Haberland <sth@linux.ibm.com> Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com> Signed-off-by: Stefan Haberland <sth@linux.ibm.com> Link: https://lore.kernel.org/r/20231025132437.1223363-3-sth@linux.ibm.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2023-11-20s390/dasd: resolve spelling mistakeMuhammad Muzammil1-1/+1
resolve typing mistake from pimary to primary Signed-off-by: Muhammad Muzammil <m.muzzammilashraf@gmail.com> Link: https://lore.kernel.org/r/20231010043140.28416-1-m.muzzammilashraf@gmail.com Signed-off-by: Stefan Haberland <sth@linux.ibm.com> Link: https://lore.kernel.org/r/20231025132437.1223363-2-sth@linux.ibm.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2023-10-28s390/dasd: Convert to bdev_open_by_path()Jan Kara4-30/+31
Convert dasd to use bdev_open_by_path() and pass the handle around. CC: linux-s390@vger.kernel.org CC: Christian Borntraeger <borntraeger@linux.ibm.com> CC: Sven Schnelle <svens@linux.ibm.com> Acked-by: Christoph Hellwig <hch@lst.de> Acked-by: Christian Brauner <brauner@kernel.org> Signed-off-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20230927093442.25915-14-jack@suse.cz Signed-off-by: Christian Brauner <brauner@kernel.org>
2023-09-09Merge tag 'block-6.6-2023-09-08' of git://git.kernel.dk/linuxLinus Torvalds3-10/+10
Pull block fixes from Jens Axboe: - Fix null_blk polled IO timeout handling (Chengming) - Regression fix for swapped arguments in drbd bvec_set_page() (Christoph) - String length handling fix for s390 dasd (Heiko) - Fixes for blk-throttle accounting (Yu) - Fix page pinning issue for same page segments (Christoph) - Remove redundant file_remove_privs() call (Christoph) - Fix a regression in partition handling for devices not supporting partitions (Li) * tag 'block-6.6-2023-09-08' of git://git.kernel.dk/linux: drbd: swap bvec_set_page len and offset block: fix pin count management when merging same-page segments null_blk: fix poll request timeout handling s390/dasd: fix string length handling block: don't add or resize partition on the disk with GENHD_FL_NO_PART block: remove the call to file_remove_privs in blkdev_write_iter blk-throttle: consider 'carryover_ios/bytes' in throtl_trim_slice() blk-throttle: use calculate_io/bytes_allowed() for throtl_trim_slice() blk-throttle: fix wrong comparation while 'carryover_ios/bytes' is negative blk-throttle: print signed value 'carryover_bytes/ios' for user