kernel/linux.git/drivers/target/target_core_file.c, branch v7.1

Merge tag 'for-7.1/block-20260411' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux

2026-04-13T22:51:31+00:00

Pull block updates from Jens Axboe: - Add shared memory zero-copy I/O support for ublk, bypassing per-I/O copies between kernel and userspace by matching registered buffer PFNs at I/O time. Includes selftests. - Refactor bio integrity to support filesystem initiated integrity operations and arbitrary buffer alignment. - Clean up bio allocation, splitting bio_alloc_bioset() into clear fast and slow paths. Add bio_await() and bio_submit_or_kill() helpers, unify synchronous bi_end_io callbacks. - Fix zone write plug refcount handling and plug removal races. Add support for serializing zone writes at QD=1 for rotational zoned devices, yielding significant throughput improvements. - Add SED-OPAL ioctls for Single User Mode management and a STACK_RESET command. - Add io_uring passthrough (uring_cmd) support to the BSG layer. - Replace pp_buf in partition scanning with struct seq_buf. - zloop improvements and cleanups. - drbd genl cleanup, switching to pre_doit/post_doit. - NVMe pull request via Keith: - Fabrics authentication updates - Enhanced block queue limits support - Workqueue usage updates - A new write zeroes device quirk - Tagset cleanup fix for loop device - MD pull requests via Yu Kuai: - Fix raid5 soft lockup in retry_aligned_read() - Fix raid10 deadlock with check operation and nowait requests - Fix raid1 overlapping writes on writemostly disks - Fix sysfs deadlock on array_state=clear - Proactive RAID-5 parity building with llbitmap, with write_zeroes_unmap optimization for initial sync - Fix llbitmap barrier ordering, rdev skipping, and bitmap_ops version mismatch fallback - Fix bcache use-after-free and uninitialized closure - Validate raid5 journal metadata payload size - Various cleanups - Various other fixes, improvements, and cleanups * tag 'for-7.1/block-20260411' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux: (146 commits) ublk: fix tautological comparison warning in ublk_ctrl_reg_buf scsi: bsg: fix buffer overflow in scsi_bsg_uring_cmd() block: refactor blkdev_zone_mgmt_ioctl MAINTAINERS: update ublk driver maintainer email Documentation: ublk: address review comments for SHMEM_ZC docs ublk: allow buffer registration before device is started ublk: replace xarray with IDA for shmem buffer index allocation ublk: simplify PFN range loop in __ublk_ctrl_reg_buf ublk: verify all pages in multi-page bvec fall within registered range ublk: widen ublk_shmem_buf_reg.len to __u64 for 4GB buffer support xfs: use bio_await in xfs_zone_gc_reset_sync block: add a bio_submit_or_kill helper block: factor out a bio_await helper block: unify the synchronous bi_end_io callbacks xfs: fix number of GC bvecs selftests/ublk: add read-only buffer registration test selftests/ublk: add filesystem fio verify test for shmem_zc selftests/ublk: add hugetlbfs shmem_zc test for loop target selftests/ublk: add shared memory zero-copy test selftests/ublk: add UBLK_F_SHMEM_ZC support for loop target ...

scsi: target: file: Use kzalloc_flex for aio_cmd

2026-03-20T02:07:39+00:00

The target_core_file doesn't initialize the aio_cmd->iocb for the ki_write_stream. When a write command fd_execute_rw_aio() is executed, we may get a bogus ki_write_stream value, causing unintended write failure status when checking iocb->ki_write_stream > max_write_streams in the block device. Let's just use kzalloc_flex when allocating the aio_cmd and let ki_write_stream=0 to fix this issue. Fixes: 732f25a2895a ("fs: add a write stream field to the kiocb") Fixes: c27683da6406 ("block: expose write streams for block device nodes") Cc: stable@vger.kernel.org Signed-off-by: Thinh Nguyen Link: https://patch.msgid.link/f1a2f81c62f043e31f80bb92d5f29893400c8ee2.1773450782.git.Thinh.Nguyen@synopsys.com Signed-off-by: Martin K. Petersen

block: remove bdev_nonrot()

2026-03-09T20:30:00+00:00

bdev_nonrot() is simply the negative return value of bdev_rot(). So replace all call sites of bdev_nonrot() with calls to bdev_rot() and remove bdev_nonrot(). Signed-off-by: Damien Le Moal Reviewed-by: Martin K. Petersen Reviewed-by: Paul Menzel Signed-off-by: Jens Axboe

Convert 'alloc_flex' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51+00:00

This is the exact same thing as the 'alloc_obj()' version, only much smaller because there are a lot fewer users of the *alloc_flex() interface. As with alloc_obj() version, this was done entirely with mindless brute force, using the same script, except using 'flex' in the pattern rather than 'objs*'. Signed-off-by: Linus Torvalds

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51+00:00

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28+00:00

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

scsi: target: Rename target_configure_unmap_from_queue()

2025-11-03T02:40:01+00:00

Rename target_configure_unmap_from_queue() to target_configure_unmap_from_bdev() since it now takes a bdev. Signed-off-by: Mike Christie Signed-off-by: John Garry Reviewed-by: John Garry Link: https://patch.msgid.link/20251020103820.2917593-2-john.g.garry@oracle.com Signed-off-by: Martin K. Petersen

move asm/unaligned.h to linux/unaligned.h

2024-10-02T21:23:23+00:00

asm/unaligned.h is always an include of asm-generic/unaligned.h; might as well move that thing to linux/unaligned.h and include that - there's nothing arch-specific in that header. auto-generated by the following: for i in `git grep -l -w asm/unaligned.h`; do sed -i -e "s/asm\/unaligned.h/linux\/unaligned.h/" $i done for i in `git grep -l -w asm-generic/unaligned.h`; do sed -i -e "s/asm-generic\/unaligned.h/linux\/unaligned.h/" $i done git mv include/asm-generic/unaligned.h include/linux/unaligned.h git mv tools/include/asm-generic/unaligned.h tools/include/linux/unaligned.h sed -i -e "/unaligned.h/d" include/asm-generic/Kbuild sed -i -e "s/__ASM_GENERIC/__LINUX/" include/linux/unaligned.h tools/include/linux/unaligned.h

remove call_{read,write}_iter() functions

2024-04-15T20:03:25+00:00

These have no clear purpose. This is effectively a revert of commit bb7462b6fd64 ("vfs: use helpers for calling f_op->{read,write}_iter()"). The patch was created with the help of a coccinelle script. Fixes: bb7462b6fd64 ("vfs: use helpers for calling f_op->{read,write}_iter()") Reviewed-by: Christian Brauner Signed-off-by: Miklos Szeredi Signed-off-by: Al Viro

scsi: target: Rename sbc_ops to exec_cmd_ops

2023-04-12T01:55:36+00:00

The next patches allow us to call the block layer's pr_ops from the backends. This will require allowing the backends to hook into the cmd processing for SPC commands, so this renames sbc_ops to a more generic exec_cmd_ops. Signed-off-by: Mike Christie Link: https://lore.kernel.org/r/20230407200551.12660-15-michael.christie@oracle.com Reviewed-by: Christoph Hellwig Reviewed-by: Hannes Reinecke Signed-off-by: Martin K. Petersen