553 lines
14 KiB
Plaintext
553 lines
14 KiB
Plaintext
dnl #
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dnl # 2.6.36 API change,
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dnl # REQ_FAILFAST_{DEV|TRANSPORT|DRIVER}
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dnl # REQ_DISCARD
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dnl # REQ_FLUSH
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dnl #
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dnl # 4.8 - 4.9 API,
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dnl # REQ_FLUSH was renamed to REQ_PREFLUSH
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_REQ], [
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ZFS_LINUX_TEST_SRC([req_failfast_mask], [
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#include <linux/bio.h>
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],[
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int flags __attribute__ ((unused));
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flags = REQ_FAILFAST_MASK;
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])
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ZFS_LINUX_TEST_SRC([req_discard], [
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#include <linux/bio.h>
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],[
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int flags __attribute__ ((unused));
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flags = REQ_DISCARD;
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])
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ZFS_LINUX_TEST_SRC([req_flush], [
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#include <linux/bio.h>
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],[
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int flags __attribute__ ((unused));
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flags = REQ_FLUSH;
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])
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ZFS_LINUX_TEST_SRC([req_preflush], [
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#include <linux/bio.h>
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],[
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int flags __attribute__ ((unused));
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flags = REQ_PREFLUSH;
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])
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])
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AC_DEFUN([ZFS_AC_KERNEL_BIO_REQ_FAILFAST_MASK], [
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AC_MSG_CHECKING([whether REQ_FAILFAST_MASK is defined])
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ZFS_LINUX_TEST_RESULT([req_failfast_mask], [
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AC_MSG_RESULT(yes)
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],[
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ZFS_LINUX_TEST_ERROR([REQ_FAILFAST_MASK])
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])
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])
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AC_DEFUN([ZFS_AC_KERNEL_BIO_REQ_DISCARD], [
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AC_MSG_CHECKING([whether REQ_DISCARD is defined])
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ZFS_LINUX_TEST_RESULT([req_discard], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_REQ_DISCARD, 1, [REQ_DISCARD is defined])
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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_BIO_REQ_FLUSH], [
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AC_MSG_CHECKING([whether REQ_FLUSH is defined])
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ZFS_LINUX_TEST_RESULT([req_flush], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_REQ_FLUSH, 1, [REQ_FLUSH is defined])
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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_BIO_REQ_PREFLUSH], [
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AC_MSG_CHECKING([whether REQ_PREFLUSH is defined])
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ZFS_LINUX_TEST_RESULT([req_preflush], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_REQ_PREFLUSH, 1, [REQ_PREFLUSH is defined])
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],[
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AC_MSG_RESULT(no)
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])
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])
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dnl #
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dnl # Linux 4.8 API,
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dnl #
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dnl # The bio_op() helper was introduced as a replacement for explicitly
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dnl # checking the bio->bi_rw flags. The following checks are used to
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dnl # detect if a specific operation is supported.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_BIO_OPS], [
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ZFS_LINUX_TEST_SRC([req_op_discard], [
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#include <linux/blk_types.h>
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],[
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int op __attribute__ ((unused)) = REQ_OP_DISCARD;
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])
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ZFS_LINUX_TEST_SRC([req_op_secure_erase], [
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#include <linux/blk_types.h>
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],[
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int op __attribute__ ((unused)) = REQ_OP_SECURE_ERASE;
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])
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ZFS_LINUX_TEST_SRC([req_op_flush], [
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#include <linux/blk_types.h>
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],[
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int op __attribute__ ((unused)) = REQ_OP_FLUSH;
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])
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ZFS_LINUX_TEST_SRC([bio_bi_opf], [
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#include <linux/bio.h>
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],[
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struct bio bio __attribute__ ((unused));
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bio.bi_opf = 0;
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])
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ZFS_LINUX_TEST_SRC([bio_set_op_attrs], [
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#include <linux/bio.h>
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],[
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struct bio *bio __attribute__ ((unused)) = NULL;
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bio_set_op_attrs(bio, 0, 0);
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])
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])
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AC_DEFUN([ZFS_AC_KERNEL_BIO_REQ_OP_DISCARD], [
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AC_MSG_CHECKING([whether REQ_OP_DISCARD is defined])
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ZFS_LINUX_TEST_RESULT([req_op_discard], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_REQ_OP_DISCARD, 1, [REQ_OP_DISCARD is defined])
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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_BIO_REQ_OP_SECURE_ERASE], [
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AC_MSG_CHECKING([whether REQ_OP_SECURE_ERASE is defined])
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ZFS_LINUX_TEST_RESULT([req_op_secure_erase], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_REQ_OP_SECURE_ERASE, 1,
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[REQ_OP_SECURE_ERASE is defined])
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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_BIO_REQ_OP_FLUSH], [
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AC_MSG_CHECKING([whether REQ_OP_FLUSH is defined])
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ZFS_LINUX_TEST_RESULT([req_op_flush], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_REQ_OP_FLUSH, 1, [REQ_OP_FLUSH is defined])
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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_BIO_BI_OPF], [
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AC_MSG_CHECKING([whether bio->bi_opf is defined])
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ZFS_LINUX_TEST_RESULT([bio_bi_opf], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_BIO_BI_OPF, 1, [bio->bi_opf is defined])
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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_BIO_SET_OP_ATTRS], [
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AC_MSG_CHECKING([whether bio_set_op_attrs is available])
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ZFS_LINUX_TEST_RESULT([bio_set_op_attrs], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_BIO_SET_OP_ATTRS, 1,
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[bio_set_op_attrs is available])
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],[
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AC_MSG_RESULT(no)
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])
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])
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dnl #
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dnl # Linux 4.14 API,
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dnl #
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dnl # The bio_set_dev() helper macro was introduced as part of the transition
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dnl # to have struct gendisk in struct bio.
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dnl #
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dnl # Linux 5.0 API,
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dnl #
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dnl # The bio_set_dev() helper macro was updated to internally depend on
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dnl # bio_associate_blkg() symbol which is exported GPL-only.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_BIO_SET_DEV], [
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ZFS_LINUX_TEST_SRC([bio_set_dev], [
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#include <linux/bio.h>
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#include <linux/fs.h>
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],[
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struct block_device *bdev = NULL;
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struct bio *bio = NULL;
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bio_set_dev(bio, bdev);
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], [], [ZFS_META_LICENSE])
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])
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dnl #
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dnl # Linux 5.16 API
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dnl #
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dnl # bio_set_dev is no longer a helper macro and is now an inline function,
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dnl # meaning that the function it calls internally can no longer be overridden
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dnl # by our code
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_BIO_SET_DEV_MACRO], [
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ZFS_LINUX_TEST_SRC([bio_set_dev_macro], [
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#include <linux/bio.h>
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#include <linux/fs.h>
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],[
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#ifndef bio_set_dev
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#error Not a macro
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#endif
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], [], [ZFS_META_LICENSE])
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])
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AC_DEFUN([ZFS_AC_KERNEL_BIO_SET_DEV], [
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AC_MSG_CHECKING([whether bio_set_dev() is available])
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ZFS_LINUX_TEST_RESULT([bio_set_dev], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_BIO_SET_DEV, 1, [bio_set_dev() is available])
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AC_MSG_CHECKING([whether bio_set_dev() is GPL-only])
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ZFS_LINUX_TEST_RESULT([bio_set_dev_license], [
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AC_MSG_RESULT(no)
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],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_BIO_SET_DEV_GPL_ONLY, 1,
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[bio_set_dev() GPL-only])
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])
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AC_MSG_CHECKING([whether bio_set_dev() is a macro])
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ZFS_LINUX_TEST_RESULT([bio_set_dev_macro], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_BIO_SET_DEV_MACRO, 1,
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[bio_set_dev() is a macro])
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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_MSG_RESULT(no)
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])
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])
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dnl #
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dnl # 4.3 API change
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dnl # Error argument dropped from bio_endio in favor of newly introduced
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dnl # bio->bi_error. This also replaces bio->bi_flags value BIO_UPTODATE.
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dnl # Introduced by torvalds/linux@4246a0b63bd8f56a1469b12eafeb875b1041a451
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dnl # ("block: add a bi_error field to struct bio").
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_BIO_END_IO_T_ARGS], [
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ZFS_LINUX_TEST_SRC([bio_end_io_t_args], [
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#include <linux/bio.h>
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static void wanted_end_io(struct bio *bio) { return; }
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bio_end_io_t *end_io __attribute__ ((unused)) = wanted_end_io;
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], [])
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])
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AC_DEFUN([ZFS_AC_KERNEL_BIO_END_IO_T_ARGS], [
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AC_MSG_CHECKING([whether bio_end_io_t wants 1 arg])
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ZFS_LINUX_TEST_RESULT([bio_end_io_t_args], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_1ARG_BIO_END_IO_T, 1,
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[bio_end_io_t wants 1 arg])
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], [
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AC_MSG_RESULT(no)
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])
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])
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dnl #
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dnl # 4.13 API change
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dnl # The bio->bi_error field was replaced with bio->bi_status which is an
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dnl # enum which describes all possible error types.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_BIO_BI_STATUS], [
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ZFS_LINUX_TEST_SRC([bio_bi_status], [
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#include <linux/bio.h>
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], [
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struct bio bio __attribute__ ((unused));
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blk_status_t status __attribute__ ((unused)) = BLK_STS_OK;
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bio.bi_status = status;
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])
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])
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AC_DEFUN([ZFS_AC_KERNEL_BIO_BI_STATUS], [
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AC_MSG_CHECKING([whether bio->bi_status exists])
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ZFS_LINUX_TEST_RESULT([bio_bi_status], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_BIO_BI_STATUS, 1, [bio->bi_status exists])
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],[
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AC_MSG_RESULT(no)
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])
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])
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dnl #
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dnl # 3.14 API change,
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dnl # Immutable biovecs. A number of fields of struct bio are moved to
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dnl # struct bvec_iter.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_BIO_BVEC_ITER], [
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ZFS_LINUX_TEST_SRC([bio_bvec_iter], [
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#include <linux/bio.h>
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],[
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struct bio bio;
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bio.bi_iter.bi_sector = 0;
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])
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])
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AC_DEFUN([ZFS_AC_KERNEL_BIO_BVEC_ITER], [
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AC_MSG_CHECKING([whether bio has bi_iter])
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ZFS_LINUX_TEST_RESULT([bio_bvec_iter], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_BIO_BVEC_ITER, 1, [bio has bi_iter])
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],[
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AC_MSG_RESULT(no)
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])
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])
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dnl #
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dnl # 4.8 API change
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dnl # The rw argument has been removed from submit_bio/submit_bio_wait.
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dnl # Callers are now expected to set bio->bi_rw instead of passing it in.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_BIO_SUBMIT_BIO], [
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ZFS_LINUX_TEST_SRC([submit_bio], [
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#include <linux/bio.h>
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],[
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struct bio *bio = NULL;
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(void) submit_bio(bio);
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])
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])
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AC_DEFUN([ZFS_AC_KERNEL_BIO_SUBMIT_BIO], [
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AC_MSG_CHECKING([whether submit_bio() wants 1 arg])
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ZFS_LINUX_TEST_RESULT([submit_bio], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_1ARG_SUBMIT_BIO, 1, [submit_bio() wants 1 arg])
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],[
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AC_MSG_RESULT(no)
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])
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])
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dnl #
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dnl # 2.6.34 API change
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dnl # current->bio_list
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_BIO_CURRENT_BIO_LIST], [
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ZFS_LINUX_TEST_SRC([current_bio_list], [
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#include <linux/sched.h>
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], [
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current->bio_list = (struct bio_list *) NULL;
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])
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])
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AC_DEFUN([ZFS_AC_KERNEL_BIO_CURRENT_BIO_LIST], [
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AC_MSG_CHECKING([whether current->bio_list exists])
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ZFS_LINUX_TEST_RESULT([current_bio_list], [
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AC_MSG_RESULT(yes)
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],[
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ZFS_LINUX_TEST_ERROR([bio_list])
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])
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])
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dnl #
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dnl # Linux 5.5 API,
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dnl #
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dnl # The Linux 5.5 kernel updated percpu_ref_tryget() which is inlined by
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dnl # blkg_tryget() to use rcu_read_lock() instead of rcu_read_lock_sched().
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dnl # As a side effect the function was converted to GPL-only.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKG_TRYGET], [
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ZFS_LINUX_TEST_SRC([blkg_tryget], [
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#include <linux/blk-cgroup.h>
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#include <linux/bio.h>
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#include <linux/fs.h>
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],[
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struct blkcg_gq blkg __attribute__ ((unused)) = {};
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bool rc __attribute__ ((unused));
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rc = blkg_tryget(&blkg);
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], [], [ZFS_META_LICENSE])
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])
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AC_DEFUN([ZFS_AC_KERNEL_BLKG_TRYGET], [
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AC_MSG_CHECKING([whether blkg_tryget() is available])
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ZFS_LINUX_TEST_RESULT([blkg_tryget], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_BLKG_TRYGET, 1, [blkg_tryget() is available])
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AC_MSG_CHECKING([whether blkg_tryget() is GPL-only])
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ZFS_LINUX_TEST_RESULT([blkg_tryget_license], [
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AC_MSG_RESULT(no)
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],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_BLKG_TRYGET_GPL_ONLY, 1,
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[blkg_tryget() GPL-only])
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])
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],[
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AC_MSG_RESULT(no)
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])
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])
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dnl #
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dnl # Linux 5.12 API,
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dnl #
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dnl # The Linux 5.12 kernel updated struct bio to create a new bi_bdev member
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dnl # and bio->bi_disk was moved to bio->bi_bdev->bd_disk
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_BIO_BDEV_DISK], [
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ZFS_LINUX_TEST_SRC([bio_bdev_disk], [
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#include <linux/blk_types.h>
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#include <linux/blkdev.h>
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],[
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struct bio *b = NULL;
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struct gendisk *d = b->bi_bdev->bd_disk;
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blk_register_queue(d);
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])
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])
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AC_DEFUN([ZFS_AC_KERNEL_BIO_BDEV_DISK], [
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AC_MSG_CHECKING([whether bio->bi_bdev->bd_disk exists])
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ZFS_LINUX_TEST_RESULT([bio_bdev_disk], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_BIO_BDEV_DISK, 1, [bio->bi_bdev->bd_disk exists])
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],[
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AC_MSG_RESULT(no)
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])
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])
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dnl #
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dnl # Linux 5.16 API
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dnl #
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dnl # The Linux 5.16 API for submit_bio changed the return type to be
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dnl # void instead of int
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_BDEV_SUBMIT_BIO_RETURNS_VOID], [
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ZFS_LINUX_TEST_SRC([bio_bdev_submit_bio_void], [
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#include <linux/blkdev.h>
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],[
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struct block_device_operations *bdev = NULL;
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__attribute__((unused)) void(*f)(struct bio *) = bdev->submit_bio;
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])
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])
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AC_DEFUN([ZFS_AC_KERNEL_BDEV_SUBMIT_BIO_RETURNS_VOID], [
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AC_MSG_CHECKING(
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[whether block_device_operations->submit_bio() returns void])
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ZFS_LINUX_TEST_RESULT([bio_bdev_submit_bio_void], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_BDEV_SUBMIT_BIO_RETURNS_VOID, 1,
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[block_device_operations->submit_bio() returns void])
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],[
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AC_MSG_RESULT(no)
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])
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])
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dnl #
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dnl # Linux 5.16 API
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dnl #
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dnl # The Linux 5.16 API moved struct blkcg_gq into linux/blk-cgroup.h, which
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dnl # has been around since 2015. This test looks for the presence of that
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dnl # header, so that it can be conditionally included where it exists, but
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dnl # still be backward compatible with kernels that pre-date its introduction.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_BLK_CGROUP_HEADER], [
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ZFS_LINUX_TEST_SRC([blk_cgroup_header], [
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#include <linux/blk-cgroup.h>
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], [])
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])
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AC_DEFUN([ZFS_AC_KERNEL_BLK_CGROUP_HEADER], [
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AC_MSG_CHECKING([whether linux/blk-cgroup.h exists])
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ZFS_LINUX_TEST_RESULT([blk_cgroup_header],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_LINUX_BLK_CGROUP_HEADER, 1,
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[linux/blk-cgroup.h exists])
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],[
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AC_MSG_RESULT(no)
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|
])
|
|
])
|
|
|
|
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([whether bio_alloc() wants 4 args])
|
|
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], [
|
|
ZFS_AC_KERNEL_SRC_REQ
|
|
ZFS_AC_KERNEL_SRC_BIO_OPS
|
|
ZFS_AC_KERNEL_SRC_BIO_SET_DEV
|
|
ZFS_AC_KERNEL_SRC_BIO_END_IO_T_ARGS
|
|
ZFS_AC_KERNEL_SRC_BIO_BI_STATUS
|
|
ZFS_AC_KERNEL_SRC_BIO_BVEC_ITER
|
|
ZFS_AC_KERNEL_SRC_BIO_SUBMIT_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
|
|
ZFS_AC_KERNEL_SRC_BIO_SET_DEV_MACRO
|
|
ZFS_AC_KERNEL_SRC_BLK_CGROUP_HEADER
|
|
ZFS_AC_KERNEL_SRC_BIO_ALLOC_4ARG
|
|
])
|
|
|
|
AC_DEFUN([ZFS_AC_KERNEL_BIO], [
|
|
ZFS_AC_KERNEL_BIO_REQ_FAILFAST_MASK
|
|
ZFS_AC_KERNEL_BIO_REQ_DISCARD
|
|
ZFS_AC_KERNEL_BIO_REQ_FLUSH
|
|
ZFS_AC_KERNEL_BIO_REQ_PREFLUSH
|
|
|
|
ZFS_AC_KERNEL_BIO_REQ_OP_DISCARD
|
|
ZFS_AC_KERNEL_BIO_REQ_OP_SECURE_ERASE
|
|
ZFS_AC_KERNEL_BIO_REQ_OP_FLUSH
|
|
ZFS_AC_KERNEL_BIO_BI_OPF
|
|
ZFS_AC_KERNEL_BIO_SET_OP_ATTRS
|
|
|
|
ZFS_AC_KERNEL_BIO_SET_DEV
|
|
ZFS_AC_KERNEL_BIO_END_IO_T_ARGS
|
|
ZFS_AC_KERNEL_BIO_BI_STATUS
|
|
ZFS_AC_KERNEL_BIO_BVEC_ITER
|
|
ZFS_AC_KERNEL_BIO_SUBMIT_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
|
|
ZFS_AC_KERNEL_BLK_CGROUP_HEADER
|
|
ZFS_AC_KERNEL_BIO_ALLOC_4ARG
|
|
])
|