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Linux 5.16: block_device_operations->submit_bio now returns void 

The return type for the submit_bio member of struct
block_device_operations was changed to no longer return a value.

Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Coleman Kane <ckane@colemankane.org>
Closes #12819
This commit is contained in:
Coleman Kane 2021-12-02 22:54:05 -05:00 committed by Brian Behlendorf
parent 376027331d
commit 435a451e5c
2 changed files with 37 additions and 2 deletions
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29
config/kernel-bio.m4
View File

@ -395,6 +395,33 @@ AC_DEFUN([ZFS_AC_KERNEL_BIO_BDEV_DISK], [
])
])
dnl #
dnl # Linux 5.16 API
dnl #
dnl # The Linux 5.16 API for submit_bio changed the return type to be
dnl # void instead of int
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_BDEV_SUBMIT_BIO_RETURNS_VOID], [
ZFS_LINUX_TEST_SRC([bio_bdev_submit_bio_void], [
#include <linux/blkdev.h>
],[
struct block_device_operations *bdev = NULL;
__attribute__((unused)) void(*f)(struct bio *) = bdev->submit_bio;
])
])
AC_DEFUN([ZFS_AC_KERNEL_BDEV_SUBMIT_BIO_RETURNS_VOID], [
AC_MSG_CHECKING(
[whether block_device_operations->submit_bio() returns void])
ZFS_LINUX_TEST_RESULT([bio_bdev_submit_bio_void], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_BDEV_SUBMIT_BIO_RETURNS_VOID, 1,
[block_device_operations->submit_bio() returns void])
],[
AC_MSG_RESULT(no)
])
])
AC_DEFUN([ZFS_AC_KERNEL_SRC_BIO], [
ZFS_AC_KERNEL_SRC_REQ
ZFS_AC_KERNEL_SRC_BIO_OPS
@ -406,6 +433,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_BIO], [
ZFS_AC_KERNEL_SRC_BIO_CURRENT_BIO_LIST
ZFS_AC_KERNEL_SRC_BLKG_TRYGET
ZFS_AC_KERNEL_SRC_BIO_BDEV_DISK
ZFS_AC_KERNEL_SRC_BDEV_SUBMIT_BIO_RETURNS_VOID
])
AC_DEFUN([ZFS_AC_KERNEL_BIO], [
@ -428,4 +456,5 @@ AC_DEFUN([ZFS_AC_KERNEL_BIO], [
ZFS_AC_KERNEL_BIO_CURRENT_BIO_LIST
ZFS_AC_KERNEL_BLKG_TRYGET
ZFS_AC_KERNEL_BIO_BDEV_DISK
ZFS_AC_KERNEL_BDEV_SUBMIT_BIO_RETURNS_VOID
])

10
module/os/linux/zfs/zvol_os.c
View File

@ -337,8 +337,13 @@ zvol_read_task(void *arg)
}
#ifdef HAVE_SUBMIT_BIO_IN_BLOCK_DEVICE_OPERATIONS
#ifdef HAVE_BDEV_SUBMIT_BIO_RETURNS_VOID
static void
zvol_submit_bio(struct bio *bio)
#else
static blk_qc_t
zvol_submit_bio(struct bio *bio)
#endif
#else
static MAKE_REQUEST_FN_RET
zvol_request(struct request_queue *q, struct bio *bio)
@ -479,8 +484,9 @@ zvol_request(struct request_queue *q, struct bio *bio)
out:
spl_fstrans_unmark(cookie);
#if defined(HAVE_MAKE_REQUEST_FN_RET_QC) || \
defined(HAVE_SUBMIT_BIO_IN_BLOCK_DEVICE_OPERATIONS)
#if (defined(HAVE_MAKE_REQUEST_FN_RET_QC) || \
defined(HAVE_SUBMIT_BIO_IN_BLOCK_DEVICE_OPERATIONS)) && \
!defined(HAVE_BDEV_SUBMIT_BIO_RETURNS_VOID)
return (BLK_QC_T_NONE);
#endif
}