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58211157bf
Linux 6.8 removes generic_copy_file_range(), which had been reduced to a
simple wrapper around splice_copy_file_range(). Detect that function
directly and use it if generic_ is not available.
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <robn@despairlabs.com>
Closes #15930
Closes #15931
(cherry picked from commit ef08a4d406)
192 lines
5.8 KiB
Plaintext
192 lines
5.8 KiB
Plaintext
dnl #
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dnl # The *_file_range APIs have a long history:
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dnl #
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dnl # 2.6.29: BTRFS_IOC_CLONE and BTRFS_IOC_CLONE_RANGE ioctl introduced
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dnl # 3.12: BTRFS_IOC_FILE_EXTENT_SAME ioctl introduced
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dnl #
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dnl # 4.5: copy_file_range() syscall introduced, added to VFS
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dnl # 4.5: BTRFS_IOC_CLONE and BTRFS_IOC_CLONE_RANGE renamed to FICLONE ands
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dnl # FICLONERANGE, added to VFS as clone_file_range()
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dnl # 4.5: BTRFS_IOC_FILE_EXTENT_SAME renamed to FIDEDUPERANGE, added to VFS
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dnl # as dedupe_file_range()
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dnl #
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dnl # 4.20: VFS clone_file_range() and dedupe_file_range() replaced by
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dnl # remap_file_range()
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dnl #
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dnl # 5.3: VFS copy_file_range() expected to do its own fallback,
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dnl # generic_copy_file_range() added to support it
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dnl #
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dnl # 6.8: generic_copy_file_range() removed, replaced by
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dnl # splice_copy_file_range()
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_VFS_COPY_FILE_RANGE], [
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ZFS_LINUX_TEST_SRC([vfs_copy_file_range], [
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#include <linux/fs.h>
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static ssize_t test_copy_file_range(struct file *src_file,
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loff_t src_off, struct file *dst_file, loff_t dst_off,
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size_t len, unsigned int flags) {
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(void) src_file; (void) src_off;
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(void) dst_file; (void) dst_off;
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(void) len; (void) flags;
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return (0);
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}
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static const struct file_operations
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fops __attribute__ ((unused)) = {
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.copy_file_range = test_copy_file_range,
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};
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],[])
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])
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AC_DEFUN([ZFS_AC_KERNEL_VFS_COPY_FILE_RANGE], [
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AC_MSG_CHECKING([whether fops->copy_file_range() is available])
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ZFS_LINUX_TEST_RESULT([vfs_copy_file_range], [
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AC_MSG_RESULT([yes])
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AC_DEFINE(HAVE_VFS_COPY_FILE_RANGE, 1,
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[fops->copy_file_range() 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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AC_DEFUN([ZFS_AC_KERNEL_SRC_VFS_GENERIC_COPY_FILE_RANGE], [
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ZFS_LINUX_TEST_SRC([generic_copy_file_range], [
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#include <linux/fs.h>
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], [
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struct file *src_file __attribute__ ((unused)) = NULL;
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loff_t src_off __attribute__ ((unused)) = 0;
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struct file *dst_file __attribute__ ((unused)) = NULL;
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loff_t dst_off __attribute__ ((unused)) = 0;
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size_t len __attribute__ ((unused)) = 0;
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unsigned int flags __attribute__ ((unused)) = 0;
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generic_copy_file_range(src_file, src_off, dst_file, dst_off,
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len, flags);
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])
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])
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AC_DEFUN([ZFS_AC_KERNEL_VFS_GENERIC_COPY_FILE_RANGE], [
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AC_MSG_CHECKING([whether generic_copy_file_range() is available])
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ZFS_LINUX_TEST_RESULT_SYMBOL([generic_copy_file_range],
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[generic_copy_file_range], [fs/read_write.c], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_VFS_GENERIC_COPY_FILE_RANGE, 1,
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[generic_copy_file_range() 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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AC_DEFUN([ZFS_AC_KERNEL_SRC_VFS_SPLICE_COPY_FILE_RANGE], [
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ZFS_LINUX_TEST_SRC([splice_copy_file_range], [
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#include <linux/splice.h>
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], [
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struct file *src_file __attribute__ ((unused)) = NULL;
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loff_t src_off __attribute__ ((unused)) = 0;
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struct file *dst_file __attribute__ ((unused)) = NULL;
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loff_t dst_off __attribute__ ((unused)) = 0;
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size_t len __attribute__ ((unused)) = 0;
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splice_copy_file_range(src_file, src_off, dst_file, dst_off,
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len);
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])
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])
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AC_DEFUN([ZFS_AC_KERNEL_VFS_SPLICE_COPY_FILE_RANGE], [
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AC_MSG_CHECKING([whether splice_copy_file_range() is available])
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ZFS_LINUX_TEST_RESULT([splice_copy_file_range], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_VFS_SPLICE_COPY_FILE_RANGE, 1,
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[splice_copy_file_range() 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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AC_DEFUN([ZFS_AC_KERNEL_SRC_VFS_CLONE_FILE_RANGE], [
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ZFS_LINUX_TEST_SRC([vfs_clone_file_range], [
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#include <linux/fs.h>
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static int test_clone_file_range(struct file *src_file,
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loff_t src_off, struct file *dst_file, loff_t dst_off,
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u64 len) {
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(void) src_file; (void) src_off;
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(void) dst_file; (void) dst_off;
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(void) len;
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return (0);
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}
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static const struct file_operations
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fops __attribute__ ((unused)) = {
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.clone_file_range = test_clone_file_range,
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};
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],[])
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])
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AC_DEFUN([ZFS_AC_KERNEL_VFS_CLONE_FILE_RANGE], [
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AC_MSG_CHECKING([whether fops->clone_file_range() is available])
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ZFS_LINUX_TEST_RESULT([vfs_clone_file_range], [
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AC_MSG_RESULT([yes])
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AC_DEFINE(HAVE_VFS_CLONE_FILE_RANGE, 1,
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[fops->clone_file_range() 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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AC_DEFUN([ZFS_AC_KERNEL_SRC_VFS_DEDUPE_FILE_RANGE], [
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ZFS_LINUX_TEST_SRC([vfs_dedupe_file_range], [
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#include <linux/fs.h>
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static int test_dedupe_file_range(struct file *src_file,
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loff_t src_off, struct file *dst_file, loff_t dst_off,
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u64 len) {
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(void) src_file; (void) src_off;
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(void) dst_file; (void) dst_off;
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(void) len;
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return (0);
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}
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static const struct file_operations
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fops __attribute__ ((unused)) = {
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.dedupe_file_range = test_dedupe_file_range,
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};
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],[])
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])
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AC_DEFUN([ZFS_AC_KERNEL_VFS_DEDUPE_FILE_RANGE], [
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AC_MSG_CHECKING([whether fops->dedupe_file_range() is available])
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ZFS_LINUX_TEST_RESULT([vfs_dedupe_file_range], [
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AC_MSG_RESULT([yes])
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AC_DEFINE(HAVE_VFS_DEDUPE_FILE_RANGE, 1,
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[fops->dedupe_file_range() 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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AC_DEFUN([ZFS_AC_KERNEL_SRC_VFS_REMAP_FILE_RANGE], [
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ZFS_LINUX_TEST_SRC([vfs_remap_file_range], [
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#include <linux/fs.h>
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static loff_t test_remap_file_range(struct file *src_file,
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loff_t src_off, struct file *dst_file, loff_t dst_off,
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loff_t len, unsigned int flags) {
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(void) src_file; (void) src_off;
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(void) dst_file; (void) dst_off;
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(void) len; (void) flags;
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return (0);
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}
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static const struct file_operations
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fops __attribute__ ((unused)) = {
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.remap_file_range = test_remap_file_range,
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};
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],[])
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])
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AC_DEFUN([ZFS_AC_KERNEL_VFS_REMAP_FILE_RANGE], [
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AC_MSG_CHECKING([whether fops->remap_file_range() is available])
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ZFS_LINUX_TEST_RESULT([vfs_remap_file_range], [
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AC_MSG_RESULT([yes])
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AC_DEFINE(HAVE_VFS_REMAP_FILE_RANGE, 1,
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[fops->remap_file_range() 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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