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Linux 5.18 compat: 4-argument bio_alloc()

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bio_alloc(gfp_t gfp_mask, unsigned short nr_iovecs)

became

  bio_alloc(struct block_device *bdev, unsigned short nr_vecs,
            unsigned int opf, gfp_t gfp_mask)
passing NULL/0 continues previous behaviour

Upstream-commit: 07888c665b405b1cd3577ddebfeb74f4717a84c4 ("block:
 pass a block_device and opf to bio_alloc")

Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #13251
This commit is contained in:
наб 2022-03-24 15:22:53 +01:00 committed by Brian Behlendorf
parent a5a28723bd
commit 215a8255a9
2 changed files with 41 additions and 0 deletions
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37
config/kernel-bio.m4
View File

@ -474,6 +474,41 @@ AC_DEFUN([ZFS_AC_KERNEL_BLK_CGROUP_HEADER], [
]) ])
]) ])
dnl #
dnl # Linux 5.18 API
dnl #
dnl # In 07888c665b405b1cd3577ddebfeb74f4717a84c4 ("block: pass a block_device and opf to bio_alloc")
dnl # bio_alloc(gfp_t gfp_mask, unsigned short nr_iovecs)
dnl # became
dnl # bio_alloc(struct block_device *bdev, unsigned short nr_vecs, unsigned int opf, gfp_t gfp_mask)
dnl # however
dnl # > NULL/0 can be passed, both for the
dnl # > passthrough case on a raw request_queue and to temporarily avoid
dnl # > refactoring some nasty code.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_BIO_ALLOC_4ARG], [
ZFS_LINUX_TEST_SRC([bio_alloc_4arg], [
#include <linux/bio.h>
],[
gfp_t gfp_mask = 0;
unsigned short nr_iovecs = 0;
struct block_device *bdev = NULL;
unsigned int opf = 0;
struct bio *__attribute__((unused)) allocated = bio_alloc(bdev, nr_iovecs, opf, gfp_mask);
])
])
AC_DEFUN([ZFS_AC_KERNEL_BIO_ALLOC_4ARG], [
AC_MSG_CHECKING([for 4-argument bio_alloc()])
ZFS_LINUX_TEST_RESULT([bio_alloc_4arg],[
AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_BIO_ALLOC_4ARG], 1, [bio_alloc() takes 4 arguments])
],[
AC_MSG_RESULT(no)
])
])
AC_DEFUN([ZFS_AC_KERNEL_SRC_BIO], [ AC_DEFUN([ZFS_AC_KERNEL_SRC_BIO], [
ZFS_AC_KERNEL_SRC_REQ ZFS_AC_KERNEL_SRC_REQ
ZFS_AC_KERNEL_SRC_BIO_OPS ZFS_AC_KERNEL_SRC_BIO_OPS
@ -488,6 +523,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_BIO], [
ZFS_AC_KERNEL_SRC_BDEV_SUBMIT_BIO_RETURNS_VOID ZFS_AC_KERNEL_SRC_BDEV_SUBMIT_BIO_RETURNS_VOID
ZFS_AC_KERNEL_SRC_BIO_SET_DEV_MACRO ZFS_AC_KERNEL_SRC_BIO_SET_DEV_MACRO
ZFS_AC_KERNEL_SRC_BLK_CGROUP_HEADER ZFS_AC_KERNEL_SRC_BLK_CGROUP_HEADER
ZFS_AC_KERNEL_SRC_BIO_ALLOC_4ARG
]) ])
AC_DEFUN([ZFS_AC_KERNEL_BIO], [ AC_DEFUN([ZFS_AC_KERNEL_BIO], [
@ -512,4 +548,5 @@ AC_DEFUN([ZFS_AC_KERNEL_BIO], [
ZFS_AC_KERNEL_BIO_BDEV_DISK ZFS_AC_KERNEL_BIO_BDEV_DISK
ZFS_AC_KERNEL_BDEV_SUBMIT_BIO_RETURNS_VOID ZFS_AC_KERNEL_BDEV_SUBMIT_BIO_RETURNS_VOID
ZFS_AC_KERNEL_BLK_CGROUP_HEADER ZFS_AC_KERNEL_BLK_CGROUP_HEADER
ZFS_AC_KERNEL_BIO_ALLOC_4ARG
]) ])

4
module/os/linux/zfs/vdev_disk.c
View File

@ -563,6 +563,10 @@ vdev_submit_bio(struct bio *bio)
current->bio_list = bio_list; current->bio_list = bio_list;
} }
#ifdef HAVE_BIO_ALLOC_4ARG
#define bio_alloc(gfp_mask, nr_iovecs) bio_alloc(NULL, nr_iovecs, 0, gfp_mask)
#endif
static int static int
__vdev_disk_physio(struct block_device *bdev, zio_t *zio, __vdev_disk_physio(struct block_device *bdev, zio_t *zio,
size_t io_size, uint64_t io_offset, int rw, int flags) size_t io_size, uint64_t io_offset, int rw, int flags)