diff options
| author | Stanley Zhang <stazhang@purestorage.com> | 2026-01-08 02:19:37 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2026-01-12 09:16:38 -0700 |
| commit | be82a89066d595da334f6e153ababcedc3f92ad6 (patch) | |
| tree | 747e87ae09f2814d5f90c048bff9f596957c8e34 /include | |
| parent | fd5a005fa6a261762292a2d89ef8d0174b66f541 (diff) | |
ublk: implement integrity user copy
Add a function ublk_copy_user_integrity() to copy integrity information
between a request and a user iov_iter. This mirrors the existing
ublk_copy_user_pages() but operates on request integrity data instead of
regular data. Check UBLKSRV_IO_INTEGRITY_FLAG in iocb->ki_pos in
ublk_user_copy() to choose between copying data or integrity data.
[csander: change offset units from data bytes to integrity data bytes,
fix CONFIG_BLK_DEV_INTEGRITY=n build, rebase on user copy refactor]
Signed-off-by: Stanley Zhang <stazhang@purestorage.com>
Signed-off-by: Caleb Sander Mateos <csander@purestorage.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include')
| -rw-r--r-- | include/uapi/linux/ublk_cmd.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/uapi/linux/ublk_cmd.h b/include/uapi/linux/ublk_cmd.h index dfde4aee39eb..61ac5d8e1078 100644 --- a/include/uapi/linux/ublk_cmd.h +++ b/include/uapi/linux/ublk_cmd.h @@ -134,6 +134,10 @@ #define UBLKSRV_IO_BUF_TOTAL_BITS (UBLK_QID_OFF + UBLK_QID_BITS) #define UBLKSRV_IO_BUF_TOTAL_SIZE (1ULL << UBLKSRV_IO_BUF_TOTAL_BITS) +/* Copy to/from request integrity buffer instead of data buffer */ +#define UBLK_INTEGRITY_FLAG_OFF 62 +#define UBLKSRV_IO_INTEGRITY_FLAG (1ULL << UBLK_INTEGRITY_FLAG_OFF) + /* * ublk server can register data buffers for incoming I/O requests with a sparse * io_uring buffer table. The request buffer can then be used as the data buffer |