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mirror_zfs/config/kernel-blkdev.m4
Rob N ba9f587a77
vdev_disk: ensure trim errors are returned immediately 
After 06e25f9c4, the discard issuing code was organised such that if
requesting an async discard or secure erase failed before the IO was
issued (that is, calling __blkdev_issue_discard() returned an error),
the failed zio would never be executed, resulting in txg_sync hanging
forever waiting for IO to finish.

This commit fixes that by immediately executing a failed zio on error.
To handle the successful synchronous op case, we fake an async op by,
when not using an asynchronous submission method, queuing the successful
result zio as part of the discard handler.

Since it was hard to understand the differences between discard and
secure erase, and sync and async, across different kernel versions, I've
commented and reorganised the code a bit to try and make everything more
contained and linear.

Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.
Reviewed-by: Ameer Hamza <ahamza@ixsystems.com>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Closes #16070
2024-04-08 11:50:24 -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);
])
])
dnl #
dnl # 6.8.x API change
dnl # bdev_open_by_path() replaces blkdev_get_by_path()
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKDEV_BDEV_OPEN_BY_PATH], [
ZFS_LINUX_TEST_SRC([bdev_open_by_path], [
#include <linux/fs.h>
#include <linux/blkdev.h>
], [
struct bdev_handle *bdh __attribute__ ((unused)) = NULL;
const char *path = "path";
fmode_t mode = 0;
void *holder = NULL;
struct blk_holder_ops h;
bdh = bdev_open_by_path(path, mode, holder, &h);
])
])
dnl #
dnl # 6.9.x API change
dnl # bdev_file_open_by_path() replaced bdev_open_by_path(),
dnl # and returns struct file*
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_BDEV_FILE_OPEN_BY_PATH], [
ZFS_LINUX_TEST_SRC([bdev_file_open_by_path], [
#include <linux/fs.h>
#include <linux/blkdev.h>
], [
struct file *file __attribute__ ((unused)) = NULL;
const char *path = "path";
fmode_t mode = 0;
void *holder = NULL;
struct blk_holder_ops h;
file = bdev_file_open_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)
], [
AC_MSG_RESULT(no)
AC_MSG_CHECKING([whether bdev_open_by_path() exists])
ZFS_LINUX_TEST_RESULT([bdev_open_by_path], [
AC_DEFINE(HAVE_BDEV_OPEN_BY_PATH, 1,
[bdev_open_by_path() exists])
AC_MSG_RESULT(yes)
], [
AC_MSG_RESULT(no)
AC_MSG_CHECKING([whether bdev_file_open_by_path() exists])
ZFS_LINUX_TEST_RESULT([bdev_file_open_by_path], [
AC_DEFINE(HAVE_BDEV_FILE_OPEN_BY_PATH, 1,
[bdev_file_open_by_path() exists])
AC_MSG_RESULT(yes)
], [
AC_MSG_RESULT(no)
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);
])
])
dnl #
dnl # 6.8.x API change
dnl # bdev_release() replaces blkdev_put()
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKDEV_BDEV_RELEASE], [
ZFS_LINUX_TEST_SRC([bdev_release], [
#include <linux/fs.h>
#include <linux/blkdev.h>
], [
struct bdev_handle *bdh = NULL;
bdev_release(bdh);
])
])
dnl #
dnl # 6.9.x API change
dnl #
dnl # bdev_release() now private, but because bdev_file_open_by_path() returns
dnl # struct file*, we can just use fput(). So the blkdev_put test no longer
dnl # fails if not found.
dnl #
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_DEFINE(HAVE_BLKDEV_PUT, 1, [blkdev_put() exists])
], [
AC_MSG_RESULT(no)
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])
], [
AC_MSG_RESULT(no)
AC_MSG_CHECKING([whether bdev_release() exists])
ZFS_LINUX_TEST_RESULT([bdev_release], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_BDEV_RELEASE, 1,
[bdev_release() exists])
], [
AC_MSG_RESULT(no)
])
])
])
])
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 # TRIM support: discard and secure erase. We make use of asynchronous
dnl # functions when available.
dnl #
dnl # 3.10:
dnl # sync discard: blkdev_issue_discard(..., 0)
dnl # sync erase: blkdev_issue_discard(..., BLKDEV_DISCARD_SECURE)
dnl # async discard: [not available]
dnl # async erase: [not available]
dnl #
dnl # 4.7:
dnl # sync discard: blkdev_issue_discard(..., 0)
dnl # sync erase: blkdev_issue_discard(..., BLKDEV_DISCARD_SECURE)
dnl # async discard: __blkdev_issue_discard(..., 0)
dnl # async erase: __blkdev_issue_discard(..., BLKDEV_DISCARD_SECURE)
dnl #
dnl # 5.19:
dnl # sync discard: blkdev_issue_discard(...)
dnl # sync erase: blkdev_issue_secure_erase(...)
dnl # async discard: __blkdev_issue_discard(...)
dnl # async erase: [not available]
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKDEV_ISSUE_DISCARD], [
ZFS_LINUX_TEST_SRC([blkdev_issue_discard_noflags], [
#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_discard(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);
])
ZFS_LINUX_TEST_SRC([blkdev_issue_discard_async_noflags], [
#include <linux/blkdev.h>
],[
struct block_device *bdev = NULL;
sector_t sector = 0;
sector_t nr_sects = 0;
struct bio *biop = NULL;
int error __attribute__ ((unused));
error = __blkdev_issue_discard(bdev,
sector, nr_sects, GFP_KERNEL, &biop);
])
ZFS_LINUX_TEST_SRC([blkdev_issue_discard_async_flags], [
#include <linux/blkdev.h>
],[
struct block_device *bdev = NULL;
sector_t sector = 0;
sector_t nr_sects = 0;
unsigned long flags = 0;
struct bio *biop = NULL;
int error __attribute__ ((unused));
error = __blkdev_issue_discard(bdev,
sector, nr_sects, GFP_KERNEL, flags, &biop);
])
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);
])
])
AC_DEFUN([ZFS_AC_KERNEL_BLKDEV_ISSUE_DISCARD], [
AC_MSG_CHECKING([whether blkdev_issue_discard() is available])
ZFS_LINUX_TEST_RESULT([blkdev_issue_discard_noflags], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_BLKDEV_ISSUE_DISCARD_NOFLAGS, 1,
[blkdev_issue_discard() is available])
],[
AC_MSG_RESULT(no)
])
AC_MSG_CHECKING([whether blkdev_issue_discard(flags) is available])
ZFS_LINUX_TEST_RESULT([blkdev_issue_discard_flags], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_BLKDEV_ISSUE_DISCARD_FLAGS, 1,
[blkdev_issue_discard(flags) is available])
],[
AC_MSG_RESULT(no)
])
AC_MSG_CHECKING([whether __blkdev_issue_discard() is available])
ZFS_LINUX_TEST_RESULT([blkdev_issue_discard_async_noflags], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_BLKDEV_ISSUE_DISCARD_ASYNC_NOFLAGS, 1,
[__blkdev_issue_discard() is available])
],[
AC_MSG_RESULT(no)
])
AC_MSG_CHECKING([whether __blkdev_issue_discard(flags) is available])
ZFS_LINUX_TEST_RESULT([blkdev_issue_discard_async_flags], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_BLKDEV_ISSUE_DISCARD_ASYNC_FLAGS, 1,
[__blkdev_issue_discard(flags) is available])
],[
AC_MSG_RESULT(no)
])
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)
])
])
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_BDEV_OPEN_BY_PATH
ZFS_AC_KERNEL_SRC_BDEV_FILE_OPEN_BY_PATH
ZFS_AC_KERNEL_SRC_BLKDEV_PUT
ZFS_AC_KERNEL_SRC_BLKDEV_PUT_HOLDER
ZFS_AC_KERNEL_SRC_BLKDEV_BDEV_RELEASE
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_DISCARD
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_DISCARD
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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