mirror_zfs/config/kernel-filemap-splice-read.m4
Rob Norris 85391ee931 build: add SPDX license tags to build system files
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Signed-off-by: Rob Norris <robn@despairlabs.com>
Closes #18077
2026-01-08 15:08:03 -08:00

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dnl # SPDX-License-Identifier: CDDL-1.0
AC_DEFUN([ZFS_AC_KERNEL_SRC_COPY_SPLICE_READ], [
dnl #
dnl # Kernel 6.5 - generic_file_splice_read was removed in favor
dnl # of copy_splice_read for the .splice_read member of the
dnl # file_operations struct.
dnl #
ZFS_LINUX_TEST_SRC([has_copy_splice_read], [
#include <linux/fs.h>
struct file_operations fops __attribute__((unused)) = {
.splice_read = copy_splice_read,
};
],[])
])
AC_DEFUN([ZFS_AC_KERNEL_COPY_SPLICE_READ], [
AC_MSG_CHECKING([whether copy_splice_read() exists])
ZFS_LINUX_TEST_RESULT([has_copy_splice_read], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_COPY_SPLICE_READ, 1,
[copy_splice_read exists])
],[
AC_MSG_RESULT(no)
])
])