Linux 5.18 compat: 4-argument bio_alloc()
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
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@ -474,6 +474,41 @@ AC_DEFUN([ZFS_AC_KERNEL_BLK_CGROUP_HEADER], [
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])
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])
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dnl #
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dnl # Linux 5.18 API
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dnl #
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dnl # In 07888c665b405b1cd3577ddebfeb74f4717a84c4 ("block: pass a block_device and opf to bio_alloc")
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dnl # bio_alloc(gfp_t gfp_mask, unsigned short nr_iovecs)
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dnl # became
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dnl # bio_alloc(struct block_device *bdev, unsigned short nr_vecs, unsigned int opf, gfp_t gfp_mask)
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dnl # however
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dnl # > NULL/0 can be passed, both for the
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dnl # > passthrough case on a raw request_queue and to temporarily avoid
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dnl # > refactoring some nasty code.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_BIO_ALLOC_4ARG], [
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ZFS_LINUX_TEST_SRC([bio_alloc_4arg], [
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#include <linux/bio.h>
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],[
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gfp_t gfp_mask = 0;
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unsigned short nr_iovecs = 0;
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struct block_device *bdev = NULL;
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unsigned int opf = 0;
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struct bio *__attribute__((unused)) allocated = bio_alloc(bdev, nr_iovecs, opf, gfp_mask);
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])
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])
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AC_DEFUN([ZFS_AC_KERNEL_BIO_ALLOC_4ARG], [
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AC_MSG_CHECKING([for 4-argument bio_alloc()])
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ZFS_LINUX_TEST_RESULT([bio_alloc_4arg],[
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AC_MSG_RESULT(yes)
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AC_DEFINE([HAVE_BIO_ALLOC_4ARG], 1, [bio_alloc() takes 4 arguments])
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],[
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AC_MSG_RESULT(no)
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])
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])
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AC_DEFUN([ZFS_AC_KERNEL_SRC_BIO], [
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ZFS_AC_KERNEL_SRC_REQ
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ZFS_AC_KERNEL_SRC_BIO_OPS
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@ -488,6 +523,7 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_BIO], [
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ZFS_AC_KERNEL_SRC_BDEV_SUBMIT_BIO_RETURNS_VOID
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ZFS_AC_KERNEL_SRC_BIO_SET_DEV_MACRO
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ZFS_AC_KERNEL_SRC_BLK_CGROUP_HEADER
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ZFS_AC_KERNEL_SRC_BIO_ALLOC_4ARG
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])
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AC_DEFUN([ZFS_AC_KERNEL_BIO], [
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@ -512,4 +548,5 @@ AC_DEFUN([ZFS_AC_KERNEL_BIO], [
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ZFS_AC_KERNEL_BIO_BDEV_DISK
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ZFS_AC_KERNEL_BDEV_SUBMIT_BIO_RETURNS_VOID
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ZFS_AC_KERNEL_BLK_CGROUP_HEADER
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ZFS_AC_KERNEL_BIO_ALLOC_4ARG
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])
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@ -563,6 +563,10 @@ vdev_submit_bio(struct bio *bio)
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current->bio_list = bio_list;
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}
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#ifdef HAVE_BIO_ALLOC_4ARG
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#define bio_alloc(gfp_mask, nr_iovecs) bio_alloc(NULL, nr_iovecs, 0, gfp_mask)
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#endif
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static int
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__vdev_disk_physio(struct block_device *bdev, zio_t *zio,
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size_t io_size, uint64_t io_offset, int rw, int flags)
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