mirror of
https://git.proxmox.com/git/mirror_zfs.git
synced 2024-12-26 19:19:32 +03:00
02f4b63db9
All of these set a #define that doesn't appear anywhere in the tree. Sponsored-by: https://despairlabs.com/sponsor/ Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Tony Hutter <hutter2@llnl.gov> Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de> Signed-off-by: Rob Norris <robn@despairlabs.com> Closes #16479
134 lines
3.6 KiB
Plaintext
134 lines
3.6 KiB
Plaintext
dnl #
|
|
dnl # Check for available iov_iter functionality.
|
|
dnl #
|
|
AC_DEFUN([ZFS_AC_KERNEL_SRC_VFS_IOV_ITER], [
|
|
ZFS_LINUX_TEST_SRC([fault_in_iov_iter_readable], [
|
|
#include <linux/fs.h>
|
|
#include <linux/uio.h>
|
|
],[
|
|
struct iov_iter iter = { 0 };
|
|
size_t size = 512;
|
|
int error __attribute__ ((unused));
|
|
|
|
error = fault_in_iov_iter_readable(&iter, size);
|
|
])
|
|
|
|
ZFS_LINUX_TEST_SRC([iov_iter_get_pages2], [
|
|
#include <linux/uio.h>
|
|
], [
|
|
struct iov_iter iter = { 0 };
|
|
struct page **pages = NULL;
|
|
size_t maxsize = 4096;
|
|
unsigned maxpages = 1;
|
|
size_t start;
|
|
size_t ret __attribute__ ((unused));
|
|
|
|
ret = iov_iter_get_pages2(&iter, pages, maxsize, maxpages,
|
|
&start);
|
|
])
|
|
|
|
ZFS_LINUX_TEST_SRC([iov_iter_get_pages], [
|
|
#include <linux/uio.h>
|
|
], [
|
|
struct iov_iter iter = { 0 };
|
|
struct page **pages = NULL;
|
|
size_t maxsize = 4096;
|
|
unsigned maxpages = 1;
|
|
size_t start;
|
|
size_t ret __attribute__ ((unused));
|
|
|
|
ret = iov_iter_get_pages(&iter, pages, maxsize, maxpages,
|
|
&start);
|
|
])
|
|
|
|
ZFS_LINUX_TEST_SRC([iov_iter_type], [
|
|
#include <linux/fs.h>
|
|
#include <linux/uio.h>
|
|
],[
|
|
struct iov_iter iter = { 0 };
|
|
__attribute__((unused)) enum iter_type i = iov_iter_type(&iter);
|
|
])
|
|
|
|
ZFS_LINUX_TEST_SRC([iter_iov], [
|
|
#include <linux/fs.h>
|
|
#include <linux/uio.h>
|
|
],[
|
|
struct iov_iter iter = { 0 };
|
|
__attribute__((unused)) const struct iovec *iov = iter_iov(&iter);
|
|
])
|
|
])
|
|
|
|
AC_DEFUN([ZFS_AC_KERNEL_VFS_IOV_ITER], [
|
|
enable_vfs_iov_iter="yes"
|
|
|
|
AC_MSG_CHECKING([whether fault_in_iov_iter_readable() is available])
|
|
ZFS_LINUX_TEST_RESULT([fault_in_iov_iter_readable], [
|
|
AC_MSG_RESULT(yes)
|
|
AC_DEFINE(HAVE_FAULT_IN_IOV_ITER_READABLE, 1,
|
|
[fault_in_iov_iter_readable() is available])
|
|
],[
|
|
AC_MSG_RESULT(no)
|
|
])
|
|
|
|
dnl #
|
|
dnl # Kernel 6.0 changed iov_iter_get_pages() to iov_iter_page_pages2().
|
|
dnl #
|
|
AC_MSG_CHECKING([whether iov_iter_get_pages2() is available])
|
|
ZFS_LINUX_TEST_RESULT([iov_iter_get_pages2], [
|
|
AC_MSG_RESULT(yes)
|
|
AC_DEFINE(HAVE_IOV_ITER_GET_PAGES2, 1,
|
|
[iov_iter_get_pages2() is available])
|
|
], [
|
|
AC_MSG_RESULT(no)
|
|
AC_MSG_CHECKING([whether iov_iter_get_pages() is available])
|
|
ZFS_LINUX_TEST_RESULT([iov_iter_get_pages], [
|
|
AC_MSG_RESULT(yes)
|
|
AC_DEFINE(HAVE_IOV_ITER_GET_PAGES, 1,
|
|
[iov_iter_get_pages() is available])
|
|
], [
|
|
AC_MSG_RESULT(no)
|
|
enable_vfs_iov_iter="no"
|
|
])
|
|
])
|
|
|
|
dnl #
|
|
dnl # This checks for iov_iter_type() in linux/uio.h. It is not
|
|
dnl # required, however, and the module will compiled without it
|
|
dnl # using direct access of the member attribute
|
|
dnl #
|
|
AC_MSG_CHECKING([whether iov_iter_type() is available])
|
|
ZFS_LINUX_TEST_RESULT([iov_iter_type], [
|
|
AC_MSG_RESULT(yes)
|
|
AC_DEFINE(HAVE_IOV_ITER_TYPE, 1,
|
|
[iov_iter_type() is available])
|
|
],[
|
|
AC_MSG_RESULT(no)
|
|
])
|
|
|
|
dnl #
|
|
dnl # As of the 4.9 kernel support is provided for iovecs, kvecs,
|
|
dnl # bvecs and pipes in the iov_iter structure. As long as the
|
|
dnl # other support interfaces are all available the iov_iter can
|
|
dnl # be correctly used in the uio structure.
|
|
dnl #
|
|
AS_IF([test "x$enable_vfs_iov_iter" = "xyes"], [
|
|
AC_DEFINE(HAVE_VFS_IOV_ITER, 1,
|
|
[All required iov_iter interfaces are available])
|
|
])
|
|
|
|
dnl #
|
|
dnl # Kernel 6.5 introduces the iter_iov() function that returns the
|
|
dnl # __iov member of an iov_iter*. The iov member was renamed to this
|
|
dnl # __iov member, and is intended to be accessed via the helper
|
|
dnl # function now.
|
|
dnl #
|
|
AC_MSG_CHECKING([whether iter_iov() is available])
|
|
ZFS_LINUX_TEST_RESULT([iter_iov], [
|
|
AC_MSG_RESULT(yes)
|
|
AC_DEFINE(HAVE_ITER_IOV, 1,
|
|
[iter_iov() is available])
|
|
],[
|
|
AC_MSG_RESULT(no)
|
|
])
|
|
])
|