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

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 more 'alloc_obj' cases to default GFP_KERNEL arguments

2026-02-22T04:03:00+00:00

This converts some of the visually simpler cases that have been split over multiple lines. I only did the ones that are easy to verify the resulting diff by having just that final GFP_KERNEL argument on the next line. Somebody should probably do a proper coccinelle script for this, but for me the trivial script actually resulted in an assertion failure in the middle of the script. I probably had made it a bit _too_ trivial. So after fighting that far a while I decided to just do some of the syntactically simpler cases with variations of the previous 'sed' scripts. The more syntactically complex multi-line cases would mostly really want whitespace cleanup anyway. 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: Add atomic support to target_core_iblock

2025-11-03T02:40:02+00:00

Make target_core_iblock use the LIO helper function to translate its block_device atomic settings to LIO settings. If we then get a write that LIO has indicated is atomic via the SCF_ATOMIC flag, we use the REQ_ATOMIC flag to tell the block layer to perform an atomic write. Signed-off-by: Mike Christie Signed-off-by: John Garry Reviewed-by: John Garry Link: https://patch.msgid.link/20251020103820.2917593-8-john.g.garry@oracle.com Signed-off-by: Martin K. Petersen

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

scsi: target: iblock: Allow iblock devices to be shared

2025-07-25T01:39:01+00:00

We might be running a local application that also interacts with the backing device. In this setup we have some clustering type of software that manages the ownwer of it, so we don't want the kernel to restrict us. This patch allows the user to control if the driver gets exclusive access. Signed-off-by: Mike Christie Link: https://lore.kernel.org/r/20250721185145.20913-1-michael.christie@oracle.com Signed-off-by: Martin K. Petersen

block: split struct bio_integrity_payload

2025-03-03T18:17:52+00:00

Many of the fields in struct bio_integrity_payload are only needed for the default integrity buffer in the block layer, and the variable sized array at the end of the structure makes it very hard to embed into caller allocated structures. Reduce struct bio_integrity_payload to the minimal structure needed in common code and create two separate containing structures for the automatically generated payload and the caller allocated payload. The latter is a simple wrapper for struct bio_integrity_payload and the bvecs, while the former contains the additional fields moved out of struct bio_integrity_payload. Always use a dedicated mempool for automatic integrity metadata instead of depending on bio_set that is submitter controlled and thus often doesn't have the mempool initialized and stop using mempools for the submitter buffers as they aren't in the NOIO I/O submission path where we need to guarantee forward progress. Signed-off-by: Christoph Hellwig Reviewed-by: Martin K. Petersen Reviewed-by: Hannes Reinecke Tested-by: Anuj Gupta Reviewed-by: Anuj Gupta Reviewed-by: Kanchan Joshi Link: https://lore.kernel.org/r/20250225154449.422989-4-hch@lst.de Signed-off-by: Jens Axboe

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

block: remove the blk_integrity_profile structure

2024-06-14T16:20:06+00:00

Block layer integrity configuration is a bit complex right now, as it indirects through operation vectors for a simple two-dimensional configuration: a) the checksum type of none, ip checksum, crc, crc64 b) the presence or absence of a reference tag Remove the integrity profile, and instead add a separate csum_type flag which replaces the existing ip-checksum field and a new flag that indicates the presence of the reference tag. This removes up to two layers of indirect calls, remove the need to offload the no-op verification of non-PI metadata to a workqueue and generally simplifies the code. The downside is that block/t10-pi.c now has to be built into the kernel when CONFIG_BLK_DEV_INTEGRITY is supported. Given that both nvme and SCSI require t10-pi.ko, it is loaded for all usual configurations that enabled CONFIG_BLK_DEV_INTEGRITY already, though. Signed-off-by: Christoph Hellwig Reviewed-by: Kanchan Joshi Reviewed-by: Hannes Reinecke Reviewed-by: Martin K. Petersen Link: https://lore.kernel.org/r/20240613084839.1044015-6-hch@lst.de Signed-off-by: Jens Axboe