kernel/linux.git/drivers/mmc/core/block.c, branch v6.18.22

rpmb: move rpmb_frame struct and constants to common header

2025-10-13T11:18:03+00:00

Move struct rpmb_frame and RPMB operation constants from MMC block driver to include/linux/rpmb.h for reuse across different RPMB implementations (UFS, NVMe, etc.). Signed-off-by: Bean Huo Reviewed-by: Avri Altman Acked-by: Jens Wiklander Reviewed-by: Bart Van Assche Signed-off-by: Ulf Hansson

Merge tag 'for-6.18/block-20250929' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux

2025-10-02T17:16:56+00:00

Pull block updates from Jens Axboe: - NVMe pull request via Keith: - FC target fixes (Daniel) - Authentication fixes and updates (Martin, Chris) - Admin controller handling (Kamaljit) - Target lockdep assertions (Max) - Keep-alive updates for discovery (Alastair) - Suspend quirk (Georg) - MD pull request via Yu: - Add support for a lockless bitmap. A key feature for the new bitmap are that the IO fastpath is lockless. If a user issues lots of write IO to the same bitmap bit in a short time, only the first write has additional overhead to update bitmap bit, no additional overhead for the following writes. By supporting only resync or recover written data, means in the case creating new array or replacing with a new disk, there is no need to do a full disk resync/recovery. - Switch ->getgeo() and ->bios_param() to using struct gendisk rather than struct block_device. - Rust block changes via Andreas. This series adds configuration via configfs and remote completion to the rnull driver. The series also includes a set of changes to the rust block device driver API: a few cleanup patches, and a few features supporting the rnull changes. The series removes the raw buffer formatting logic from `kernel::block` and improves the logic available in `kernel::string` to support the same use as the removed logic. - floppy arch cleanups - Reduce the number of dereferencing needed for ublk commands - Restrict supported sockets for nbd. Mostly done to eliminate a class of issues perpetually reported by syzbot, by using nonsensical socket setups. - A few s390 dasd block fixes - Fix a few issues around atomic writes - Improve DMA interation for integrity requests - Improve how iovecs are treated with regards to O_DIRECT aligment constraints. We used to require each segment to adhere to the constraints, now only the request as a whole needs to. - Clean up and improve p2p support, enabling use of p2p for metadata payloads - Improve locking of request lookup, using SRCU where appropriate - Use page references properly for brd, avoiding very long RCU sections - Fix ordering of recursively submitted IOs - Clean up and improve updating nr_requests for a live device - Various fixes and cleanups * tag 'for-6.18/block-20250929' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux: (164 commits) s390/dasd: enforce dma_alignment to ensure proper buffer validation s390/dasd: Return BLK_STS_INVAL for EINVAL from do_dasd_request ublk: remove redundant zone op check in ublk_setup_iod() nvme: Use non zero KATO for persistent discovery connections nvmet: add safety check for subsys lock nvme-core: use nvme_is_io_ctrl() for I/O controller check nvme-core: do ioccsz/iorcsz validation only for I/O controllers nvme-core: add method to check for an I/O controller blk-cgroup: fix possible deadlock while configuring policy blk-mq: fix null-ptr-deref in blk_mq_free_tags() from error path blk-mq: Fix more tag iteration function documentation selftests: ublk: fix behavior when fio is not installed ublk: don't access ublk_queue in ublk_unmap_io() ublk: pass ublk_io to __ublk_complete_rq() ublk: don't access ublk_queue in ublk_need_complete_req() ublk: don't access ublk_queue in ublk_check_commit_and_fetch() ublk: don't pass ublk_queue to ublk_fetch() ublk: don't access ublk_queue in ublk_config_io_buf() ublk: don't access ublk_queue in ublk_check_fetch_buf() ublk: pass q_id and tag to __ublk_check_and_get_req() ...

mmc: core: Improve RPMB frame handling code

2025-09-12T13:09:53+00:00

Introduce RPMB_FRAME_SIZE, CHECK_SIZE_NEQ(), and CHECK_SIZE_ALIGNED() macros to replace repetitive sizeof(struct rpmb_frame) checks in mmc_route_rpmb_frames(). Signed-off-by: Bean Huo Reviewed-by: Avri Altman Signed-off-by: Ulf Hansson

mmc: core: Fix variable shadowing in mmc_route_rpmb_frames()

2025-09-12T13:09:53+00:00

Rename the inner 'frm' variable to 'resp_frm' in the write path of mmc_route_rpmb_frames() to avoid shadowing the outer 'frm' variable. The function declares 'frm' at function scope pointing to the request frame, but then redeclares another 'frm' variable inside the write block pointing to the response frame. This shadowing makes the code confusing and error-prone. Using 'resp_frm' for the response frame makes the distinction clear and improves code readability. Fixes: 7852028a35f0 ("mmc: block: register RPMB partition with the RPMB subsystem") Reviewed-by: Avri Altman Reviewed-by: Jens Wiklander Signed-off-by: Bean Huo Signed-off-by: Ulf Hansson

mmc: block: use mmc_card cmd23 helpers

2025-08-19T12:34:15+00:00

Use the dedicated helpers for CMD23 card support. Signed-off-by: Benoît Monin Link: https://lore.kernel.org/r/20250818-mobileye-emmc-for-upstream-4-v4-4-34ecb3995e96@bootlin.com Signed-off-by: Ulf Hansson

block: switch ->getgeo() to struct gendisk

2025-08-13T06:59:29+00:00

Instances are happier that way and it makes more sense anyway - the only part of the result that is related to partition we are given is the start sector, and that has been filled in by the caller. Everything else is a function of the disk. Only one instance (DASD) is ever looking at anything other than bdev->bd_disk and that one is trivial to adjust. Reviewed-by: Martin K. Petersen Reviewed-by: Christoph Hellwig Acked-by: Jens Axboe Signed-off-by: Al Viro

mmc: core: Scan the eMMC boot areas for partition table

2025-05-19T11:22:10+00:00

It appears that some vendors provision the boot areas with valid part tables (GPT) in order to have identifiable partitions for device and firmware specific data, such has the qualcomm CDT (Qualcomm Config Data Table). Additionally, these boot areas can be utilized to host device-specific IDs, calibration data, and other critical information. Signed-off-by: Loic Poulain Link: https://lore.kernel.org/r/20250507134538.575912-1-loic.poulain@oss.qualcomm.com Signed-off-by: Ulf Hansson

mmc: rename mmc_host_done_complete() to mmc_host_can_done_complete()

2025-05-14T15:07:48+00:00

It is not obvious that this functions checks capabilities. Rename it to include '_can' like other capability helpers. Signed-off-by: Wolfram Sang Link: https://lore.kernel.org/r/20250501063325.7262-8-wsa+renesas@sang-engineering.com Signed-off-by: Ulf Hansson

mmc: rename mmc_host_cmd23() to mmc_host_can_cmd23()

2025-05-14T15:07:48+00:00

It is not obvious that this functions checks capabilities. Rename it to include '_can' like other capability helpers. Signed-off-by: Wolfram Sang Link: https://lore.kernel.org/r/20250501063325.7262-7-wsa+renesas@sang-engineering.com Signed-off-by: Ulf Hansson

mmc: rename mmc_can_trim() to mmc_card_can_trim()

2025-05-14T14:59:17+00:00

mmc_can_* functions sometimes relate to the card and sometimes to the host. Make it obvious by renaming this function to include 'card'. Also, convert to proper bool type while we are here. Signed-off-by: Wolfram Sang Link: https://lore.kernel.org/r/20250401095847.29271-10-wsa+renesas@sang-engineering.com Signed-off-by: Ulf Hansson