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mirror_zfs/config/kernel-blkdev.m4
Coleman Kane 43e8f6e37f
Linux 6.5 compat: blkdev changes 
Multiple changes to the blkdev API were introduced in Linux 6.5. This
includes passing (void* holder) to blkdev_put, adding a new
blk_holder_ops* arg to blkdev_get_by_path, adding a new blk_mode_t type
that replaces uses of fmode_t, and removing an argument from the release
handler on block_device_operations that we weren't using. The open
function definition has also changed to take gendisk* and blk_mode_t, so
update it accordingly, too.

Implement local wrappers for blkdev_get_by_path() and
vdev_blkdev_put() so that the in-line calls are cleaner, and place the
conditionally-compiled implementation details inside of both of these
local wrappers. Both calls are exclusively used within vdev_disk.c, at
this time.

Add blk_mode_is_open_write() to test FMODE_WRITE / BLK_OPEN_WRITE
The wrapper function is now used for testing using the appropriate
method for the kernel, whether the open mode is writable or not.

Emphasize fmode_t arg in zvol_release is not used

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Coleman Kane <ckane@colemankane.org>
Closes #15099
2023-08-01 08:37:20 -07:00

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dnl #
dnl # 2.6.38 API change,
dnl # Added blkdev_get_by_path()
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKDEV_GET_BY_PATH], [
ZFS_LINUX_TEST_SRC([blkdev_get_by_path], [
#include <linux/fs.h>
#include <linux/blkdev.h>
], [
struct block_device *bdev __attribute__ ((unused)) = NULL;
const char *path = "path";
fmode_t mode = 0;
void *holder = NULL;
bdev = blkdev_get_by_path(path, mode, holder);
])
])
dnl #
dnl # 6.5.x API change,
dnl # blkdev_get_by_path() takes 4 args
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKDEV_GET_BY_PATH_4ARG], [
ZFS_LINUX_TEST_SRC([blkdev_get_by_path_4arg], [
#include <linux/fs.h>
#include <linux/blkdev.h>
], [
struct block_device *bdev __attribute__ ((unused)) = NULL;
const char *path = "path";
fmode_t mode = 0;
void *holder = NULL;
struct blk_holder_ops h;
bdev = blkdev_get_by_path(path, mode, holder, &h);
])
])
AC_DEFUN([ZFS_AC_KERNEL_BLKDEV_GET_BY_PATH], [
AC_MSG_CHECKING([whether blkdev_get_by_path() exists and takes 3 args])
ZFS_LINUX_TEST_RESULT([blkdev_get_by_path], [
AC_MSG_RESULT(yes)
], [
AC_MSG_RESULT(no)
AC_MSG_CHECKING([whether blkdev_get_by_path() exists and takes 4 args])
ZFS_LINUX_TEST_RESULT([blkdev_get_by_path_4arg], [
AC_DEFINE(HAVE_BLKDEV_GET_BY_PATH_4ARG, 1,
[blkdev_get_by_path() exists and takes 4 args])
AC_MSG_RESULT(yes)
], [
ZFS_LINUX_TEST_ERROR([blkdev_get_by_path()])
])
])
])
dnl #
dnl # 6.5.x API change
dnl # blk_mode_t was added as a type to supercede some places where fmode_t
dnl # is used
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKDEV_BLK_MODE_T], [
ZFS_LINUX_TEST_SRC([blk_mode_t], [
#include <linux/fs.h>
#include <linux/blkdev.h>
], [
blk_mode_t m __attribute((unused)) = (blk_mode_t)0;
])
])
AC_DEFUN([ZFS_AC_KERNEL_BLKDEV_BLK_MODE_T], [
AC_MSG_CHECKING([whether blk_mode_t is defined])
ZFS_LINUX_TEST_RESULT([blk_mode_t], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_BLK_MODE_T, 1, [blk_mode_t is defined])
], [
AC_MSG_RESULT(no)
])
])
dnl #
dnl # 2.6.38 API change,
dnl # Added blkdev_put()
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKDEV_PUT], [
ZFS_LINUX_TEST_SRC([blkdev_put], [
#include <linux/fs.h>
#include <linux/blkdev.h>
], [
struct block_device *bdev = NULL;
fmode_t mode = 0;
blkdev_put(bdev, mode);
])
])
dnl #
dnl # 6.5.x API change.
dnl # blkdev_put() takes (void* holder) as arg 2
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKDEV_PUT_HOLDER], [
ZFS_LINUX_TEST_SRC([blkdev_put_holder], [
#include <linux/fs.h>
#include <linux/blkdev.h>
], [
struct block_device *bdev = NULL;
void *holder = NULL;
blkdev_put(bdev, holder);
])
])
AC_DEFUN([ZFS_AC_KERNEL_BLKDEV_PUT], [
AC_MSG_CHECKING([whether blkdev_put() exists])
ZFS_LINUX_TEST_RESULT([blkdev_put], [
AC_MSG_RESULT(yes)
], [
AC_MSG_CHECKING([whether blkdev_put() accepts void* as arg 2])
ZFS_LINUX_TEST_RESULT([blkdev_put_holder], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_BLKDEV_PUT_HOLDER, 1,
[blkdev_put() accepts void* as arg 2])
], [
ZFS_LINUX_TEST_ERROR([blkdev_put()])
])
])
])
dnl #
dnl # 4.1 API, exported blkdev_reread_part() symbol, back ported to the
dnl # 3.10.0 CentOS 7.x enterprise kernels.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKDEV_REREAD_PART], [
ZFS_LINUX_TEST_SRC([blkdev_reread_part], [
#include <linux/fs.h>
#include <linux/blkdev.h>
], [
struct block_device *bdev = NULL;
int error;
error = blkdev_reread_part(bdev);
])
])
AC_DEFUN([ZFS_AC_KERNEL_BLKDEV_REREAD_PART], [
AC_MSG_CHECKING([whether blkdev_reread_part() exists])
ZFS_LINUX_TEST_RESULT([blkdev_reread_part], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_BLKDEV_REREAD_PART, 1,
[blkdev_reread_part() exists])
], [
AC_MSG_RESULT(no)
])
])
dnl #
dnl # check_disk_change() was removed in 5.10
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKDEV_CHECK_DISK_CHANGE], [
ZFS_LINUX_TEST_SRC([check_disk_change], [
#include <linux/fs.h>
#include <linux/blkdev.h>
], [
struct block_device *bdev = NULL;
bool error;
error = check_disk_change(bdev);
])
])
AC_DEFUN([ZFS_AC_KERNEL_BLKDEV_CHECK_DISK_CHANGE], [
AC_MSG_CHECKING([whether check_disk_change() exists])
ZFS_LINUX_TEST_RESULT([check_disk_change], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_CHECK_DISK_CHANGE, 1,
[check_disk_change() exists])
], [
AC_MSG_RESULT(no)
])
])
dnl #
dnl # 6.5.x API change
dnl # disk_check_media_change() was added
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKDEV_DISK_CHECK_MEDIA_CHANGE], [
ZFS_LINUX_TEST_SRC([disk_check_media_change], [
#include <linux/fs.h>
#include <linux/blkdev.h>
], [
struct block_device *bdev = NULL;
bool error;
error = disk_check_media_change(bdev->bd_disk);
])
])
AC_DEFUN([ZFS_AC_KERNEL_BLKDEV_DISK_CHECK_MEDIA_CHANGE], [
AC_MSG_CHECKING([whether disk_check_media_change() exists])
ZFS_LINUX_TEST_RESULT([disk_check_media_change], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_DISK_CHECK_MEDIA_CHANGE, 1,
[disk_check_media_change() exists])
], [
AC_MSG_RESULT(no)
])
])
dnl #
dnl # bdev_kobj() is introduced from 5.12
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKDEV_BDEV_KOBJ], [
ZFS_LINUX_TEST_SRC([bdev_kobj], [
#include <linux/fs.h>
#include <linux/blkdev.h>
#include <linux/kobject.h>
], [
struct block_device *bdev = NULL;
struct kobject *disk_kobj;
disk_kobj = bdev_kobj(bdev);
])
])
AC_DEFUN([ZFS_AC_KERNEL_BLKDEV_BDEV_KOBJ], [
AC_MSG_CHECKING([whether bdev_kobj() exists])
ZFS_LINUX_TEST_RESULT([bdev_kobj], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_BDEV_KOBJ, 1,
[bdev_kobj() exists])
], [
AC_MSG_RESULT(no)
])
])
dnl #
dnl # part_to_dev() was removed in 5.12
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKDEV_PART_TO_DEV], [
ZFS_LINUX_TEST_SRC([part_to_dev], [
#include <linux/fs.h>
#include <linux/blkdev.h>
], [
struct hd_struct *p = NULL;
struct device *pdev;
pdev = part_to_dev(p);
])
])
AC_DEFUN([ZFS_AC_KERNEL_BLKDEV_PART_TO_DEV], [
AC_MSG_CHECKING([whether part_to_dev() exists])
ZFS_LINUX_TEST_RESULT([part_to_dev], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_PART_TO_DEV, 1,
[part_to_dev() exists])
], [
AC_MSG_RESULT(no)
])
])
dnl #
dnl # 5.10 API, check_disk_change() is removed, in favor of
dnl # bdev_check_media_change(), which doesn't force revalidation
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKDEV_BDEV_CHECK_MEDIA_CHANGE], [
ZFS_LINUX_TEST_SRC([bdev_check_media_change], [
#include <linux/fs.h>
#include <linux/blkdev.h>
], [
struct block_device *bdev = NULL;
int error;
error = bdev_check_media_change(bdev);
])
])
AC_DEFUN([ZFS_AC_KERNEL_BLKDEV_BDEV_CHECK_MEDIA_CHANGE], [
AC_MSG_CHECKING([whether bdev_check_media_change() exists])
ZFS_LINUX_TEST_RESULT([bdev_check_media_change], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_BDEV_CHECK_MEDIA_CHANGE, 1,
[bdev_check_media_change() exists])
], [
AC_MSG_RESULT(no)
])
])
dnl #
dnl # 2.6.22 API change
dnl # Single argument invalidate_bdev()
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKDEV_INVALIDATE_BDEV], [
ZFS_LINUX_TEST_SRC([invalidate_bdev], [
#include <linux/buffer_head.h>
#include <linux/blkdev.h>
],[
struct block_device *bdev = NULL;
invalidate_bdev(bdev);
])
])
AC_DEFUN([ZFS_AC_KERNEL_BLKDEV_INVALIDATE_BDEV], [
AC_MSG_CHECKING([whether invalidate_bdev() exists])
ZFS_LINUX_TEST_RESULT([invalidate_bdev], [
AC_MSG_RESULT(yes)
],[
ZFS_LINUX_TEST_ERROR([invalidate_bdev()])
])
])
dnl #
dnl # 5.11 API, lookup_bdev() takes dev_t argument.
dnl # 2.6.27 API, lookup_bdev() was first exported.
dnl # 4.4.0-6.21 API, lookup_bdev() on Ubuntu takes mode argument.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKDEV_LOOKUP_BDEV], [
ZFS_LINUX_TEST_SRC([lookup_bdev_devt], [
#include <linux/blkdev.h>
], [
int error __attribute__ ((unused));
const char path[] = "/example/path";
dev_t dev;
error = lookup_bdev(path, &dev);
])
ZFS_LINUX_TEST_SRC([lookup_bdev_1arg], [
#include <linux/fs.h>
#include <linux/blkdev.h>
], [
struct block_device *bdev __attribute__ ((unused));
const char path[] = "/example/path";
bdev = lookup_bdev(path);
])
ZFS_LINUX_TEST_SRC([lookup_bdev_mode], [
#include <linux/fs.h>
], [
struct block_device *bdev __attribute__ ((unused));
const char path[] = "/example/path";
bdev = lookup_bdev(path, FMODE_READ);
])
])
AC_DEFUN([ZFS_AC_KERNEL_BLKDEV_LOOKUP_BDEV], [
AC_MSG_CHECKING([whether lookup_bdev() wants dev_t arg])
ZFS_LINUX_TEST_RESULT_SYMBOL([lookup_bdev_devt],
[lookup_bdev], [fs/block_dev.c], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_DEVT_LOOKUP_BDEV, 1,
[lookup_bdev() wants dev_t arg])
], [
AC_MSG_RESULT(no)
AC_MSG_CHECKING([whether lookup_bdev() wants 1 arg])
ZFS_LINUX_TEST_RESULT_SYMBOL([lookup_bdev_1arg],
[lookup_bdev], [fs/block_dev.c], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_1ARG_LOOKUP_BDEV, 1,
[lookup_bdev() wants 1 arg])
], [
AC_MSG_RESULT(no)
AC_MSG_CHECKING([whether lookup_bdev() wants mode arg])
ZFS_LINUX_TEST_RESULT_SYMBOL([lookup_bdev_mode],
[lookup_bdev], [fs/block_dev.c], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_MODE_LOOKUP_BDEV, 1,
[lookup_bdev() wants mode arg])
], [
ZFS_LINUX_TEST_ERROR([lookup_bdev()])
])
])
])
])
dnl #
dnl # 2.6.30 API change
dnl #
dnl # The bdev_physical_block_size() interface was added to provide a way
dnl # to determine the smallest write which can be performed without a
dnl # read-modify-write operation.
dnl #
dnl # Unfortunately, this interface isn't entirely reliable because
dnl # drives are sometimes known to misreport this value.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKDEV_BDEV_PHYSICAL_BLOCK_SIZE], [
ZFS_LINUX_TEST_SRC([bdev_physical_block_size], [
#include <linux/blkdev.h>
],[
struct block_device *bdev __attribute__ ((unused)) = NULL;
bdev_physical_block_size(bdev);
])
])
AC_DEFUN([ZFS_AC_KERNEL_BLKDEV_BDEV_PHYSICAL_BLOCK_SIZE], [
AC_MSG_CHECKING([whether bdev_physical_block_size() is available])
ZFS_LINUX_TEST_RESULT([bdev_physical_block_size], [
AC_MSG_RESULT(yes)
],[
ZFS_LINUX_TEST_ERROR([bdev_physical_block_size()])
])
])
dnl #
dnl # 2.6.30 API change
dnl # Added bdev_logical_block_size().
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKDEV_BDEV_LOGICAL_BLOCK_SIZE], [
ZFS_LINUX_TEST_SRC([bdev_logical_block_size], [
#include <linux/blkdev.h>
],[
struct block_device *bdev __attribute__ ((unused)) = NULL;
bdev_logical_block_size(bdev);
])
])
AC_DEFUN([ZFS_AC_KERNEL_BLKDEV_BDEV_LOGICAL_BLOCK_SIZE], [
AC_MSG_CHECKING([whether bdev_logical_block_size() is available])
ZFS_LINUX_TEST_RESULT([bdev_logical_block_size], [
AC_MSG_RESULT(yes)
],[
ZFS_LINUX_TEST_ERROR([bdev_logical_block_size()])
])
])
dnl #
dnl # 5.11 API change
dnl # Added bdev_whole() helper.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKDEV_BDEV_WHOLE], [
ZFS_LINUX_TEST_SRC([bdev_whole], [
#include <linux/blkdev.h>
],[
struct block_device *bdev = NULL;
bdev = bdev_whole(bdev);
])
])
AC_DEFUN([ZFS_AC_KERNEL_BLKDEV_BDEV_WHOLE], [
AC_MSG_CHECKING([whether bdev_whole() is available])
ZFS_LINUX_TEST_RESULT([bdev_whole], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_BDEV_WHOLE, 1, [bdev_whole() is available])
],[
AC_MSG_RESULT(no)
])
])
dnl #
dnl # 5.20 API change,
dnl # Removed bdevname(), snprintf(.., %pg) should be used.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKDEV_BDEVNAME], [
ZFS_LINUX_TEST_SRC([bdevname], [
#include <linux/fs.h>
#include <linux/blkdev.h>
], [
struct block_device *bdev __attribute__ ((unused)) = NULL;
char path[BDEVNAME_SIZE];
(void) bdevname(bdev, path);
])
])
AC_DEFUN([ZFS_AC_KERNEL_BLKDEV_BDEVNAME], [
AC_MSG_CHECKING([whether bdevname() exists])
ZFS_LINUX_TEST_RESULT([bdevname], [
AC_DEFINE(HAVE_BDEVNAME, 1, [bdevname() is available])
AC_MSG_RESULT(yes)
], [
AC_MSG_RESULT(no)
])
])
dnl #
dnl # 5.19 API: blkdev_issue_secure_erase()
dnl # 3.10 API: blkdev_issue_discard(..., BLKDEV_DISCARD_SECURE)
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKDEV_ISSUE_SECURE_ERASE], [
ZFS_LINUX_TEST_SRC([blkdev_issue_secure_erase], [
#include <linux/blkdev.h>
],[
struct block_device *bdev = NULL;
sector_t sector = 0;
sector_t nr_sects = 0;
int error __attribute__ ((unused));
error = blkdev_issue_secure_erase(bdev,
sector, nr_sects, GFP_KERNEL);
])
ZFS_LINUX_TEST_SRC([blkdev_issue_discard_flags], [
#include <linux/blkdev.h>
],[
struct block_device *bdev = NULL;
sector_t sector = 0;
sector_t nr_sects = 0;
unsigned long flags = 0;
int error __attribute__ ((unused));
error = blkdev_issue_discard(bdev,
sector, nr_sects, GFP_KERNEL, flags);
])
])
AC_DEFUN([ZFS_AC_KERNEL_BLKDEV_ISSUE_SECURE_ERASE], [
AC_MSG_CHECKING([whether blkdev_issue_secure_erase() is available])
ZFS_LINUX_TEST_RESULT([blkdev_issue_secure_erase], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_BLKDEV_ISSUE_SECURE_ERASE, 1,
[blkdev_issue_secure_erase() is available])
],[
AC_MSG_RESULT(no)
AC_MSG_CHECKING([whether blkdev_issue_discard() is available])
ZFS_LINUX_TEST_RESULT([blkdev_issue_discard_flags], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_BLKDEV_ISSUE_DISCARD, 1,
[blkdev_issue_discard() is available])
],[
ZFS_LINUX_TEST_ERROR([blkdev_issue_discard()])
])
])
])
dnl #
dnl # 5.13 API change
dnl # blkdev_get_by_path() no longer handles ERESTARTSYS
dnl #
dnl # Unfortunately we're forced to rely solely on the kernel version
dnl # number in order to determine the expected behavior. This was an
dnl # internal change to blkdev_get_by_dev(), see commit a8ed1a0607.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_BLKDEV_GET_ERESTARTSYS], [
AC_MSG_CHECKING([whether blkdev_get_by_path() handles ERESTARTSYS])
AS_VERSION_COMPARE([$LINUX_VERSION], [5.13.0], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_BLKDEV_GET_ERESTARTSYS, 1,
[blkdev_get_by_path() handles ERESTARTSYS])
],[
AC_MSG_RESULT(no)
],[
AC_MSG_RESULT(no)
])
])
dnl #
dnl # 6.5.x API change
dnl # BLK_STS_NEXUS replaced with BLK_STS_RESV_CONFLICT
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKDEV_BLK_STS_RESV_CONFLICT], [
ZFS_LINUX_TEST_SRC([blk_sts_resv_conflict], [
#include <linux/blkdev.h>
],[
blk_status_t s __attribute__ ((unused)) = BLK_STS_RESV_CONFLICT;
])
])
AC_DEFUN([ZFS_AC_KERNEL_BLKDEV_BLK_STS_RESV_CONFLICT], [
AC_MSG_CHECKING([whether BLK_STS_RESV_CONFLICT is defined])
ZFS_LINUX_TEST_RESULT([blk_sts_resv_conflict], [
AC_DEFINE(HAVE_BLK_STS_RESV_CONFLICT, 1, [BLK_STS_RESV_CONFLICT is defined])
AC_MSG_RESULT(yes)
], [
AC_MSG_RESULT(no)
])
])
])
AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKDEV], [
ZFS_AC_KERNEL_SRC_BLKDEV_GET_BY_PATH
ZFS_AC_KERNEL_SRC_BLKDEV_GET_BY_PATH_4ARG
ZFS_AC_KERNEL_SRC_BLKDEV_PUT
ZFS_AC_KERNEL_SRC_BLKDEV_PUT_HOLDER
ZFS_AC_KERNEL_SRC_BLKDEV_REREAD_PART
ZFS_AC_KERNEL_SRC_BLKDEV_INVALIDATE_BDEV
ZFS_AC_KERNEL_SRC_BLKDEV_LOOKUP_BDEV
ZFS_AC_KERNEL_SRC_BLKDEV_BDEV_LOGICAL_BLOCK_SIZE
ZFS_AC_KERNEL_SRC_BLKDEV_BDEV_PHYSICAL_BLOCK_SIZE
ZFS_AC_KERNEL_SRC_BLKDEV_CHECK_DISK_CHANGE
ZFS_AC_KERNEL_SRC_BLKDEV_BDEV_CHECK_MEDIA_CHANGE
ZFS_AC_KERNEL_SRC_BLKDEV_BDEV_WHOLE
ZFS_AC_KERNEL_SRC_BLKDEV_BDEVNAME
ZFS_AC_KERNEL_SRC_BLKDEV_ISSUE_SECURE_ERASE
ZFS_AC_KERNEL_SRC_BLKDEV_BDEV_KOBJ
ZFS_AC_KERNEL_SRC_BLKDEV_PART_TO_DEV
ZFS_AC_KERNEL_SRC_BLKDEV_DISK_CHECK_MEDIA_CHANGE
ZFS_AC_KERNEL_SRC_BLKDEV_BLK_STS_RESV_CONFLICT
ZFS_AC_KERNEL_SRC_BLKDEV_BLK_MODE_T
])
AC_DEFUN([ZFS_AC_KERNEL_BLKDEV], [
ZFS_AC_KERNEL_BLKDEV_GET_BY_PATH
ZFS_AC_KERNEL_BLKDEV_PUT
ZFS_AC_KERNEL_BLKDEV_REREAD_PART
ZFS_AC_KERNEL_BLKDEV_INVALIDATE_BDEV
ZFS_AC_KERNEL_BLKDEV_LOOKUP_BDEV
ZFS_AC_KERNEL_BLKDEV_BDEV_LOGICAL_BLOCK_SIZE
ZFS_AC_KERNEL_BLKDEV_BDEV_PHYSICAL_BLOCK_SIZE
ZFS_AC_KERNEL_BLKDEV_CHECK_DISK_CHANGE
ZFS_AC_KERNEL_BLKDEV_BDEV_CHECK_MEDIA_CHANGE
ZFS_AC_KERNEL_BLKDEV_BDEV_WHOLE
ZFS_AC_KERNEL_BLKDEV_BDEVNAME
ZFS_AC_KERNEL_BLKDEV_GET_ERESTARTSYS
ZFS_AC_KERNEL_BLKDEV_ISSUE_SECURE_ERASE
ZFS_AC_KERNEL_BLKDEV_BDEV_KOBJ
ZFS_AC_KERNEL_BLKDEV_PART_TO_DEV
ZFS_AC_KERNEL_BLKDEV_DISK_CHECK_MEDIA_CHANGE
ZFS_AC_KERNEL_BLKDEV_BLK_STS_RESV_CONFLICT
ZFS_AC_KERNEL_BLKDEV_BLK_MODE_T
])
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