mirror of
https://git.proxmox.com/git/mirror_zfs
synced 2025-11-04 08:52:47 +00:00
6b0a4be5fe
Redhat have backported copy_file_range and clone_file_range to the EL7 kernel using an "extended file operations" wrapper structure. This connects all that up to let cloning work there too. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Kay Pedersen <mail@mkwg.de> Signed-off-by: Rob Norris <rob.norris@klarasystems.com> Sponsored-By: OpenDrives Inc. Sponsored-By: Klara Inc. Closes #15050
51 lines
1.6 KiB
Plaintext
51 lines
1.6 KiB
Plaintext
dnl #
|
|
dnl # EL7 have backported copy_file_range and clone_file_range and
|
|
dnl # added them to an "extended" file_operations struct.
|
|
dnl #
|
|
dnl # We're testing for both functions in one here, because they will only
|
|
dnl # ever appear together and we don't want to match a similar method in
|
|
dnl # some future vendor kernel.
|
|
dnl #
|
|
AC_DEFUN([ZFS_AC_KERNEL_SRC_VFS_FILE_OPERATIONS_EXTEND], [
|
|
ZFS_LINUX_TEST_SRC([vfs_file_operations_extend], [
|
|
#include <linux/fs.h>
|
|
|
|
static ssize_t test_copy_file_range(struct file *src_file,
|
|
loff_t src_off, struct file *dst_file, loff_t dst_off,
|
|
size_t len, unsigned int flags) {
|
|
(void) src_file; (void) src_off;
|
|
(void) dst_file; (void) dst_off;
|
|
(void) len; (void) flags;
|
|
return (0);
|
|
}
|
|
|
|
static int test_clone_file_range(struct file *src_file,
|
|
loff_t src_off, struct file *dst_file, loff_t dst_off,
|
|
u64 len) {
|
|
(void) src_file; (void) src_off;
|
|
(void) dst_file; (void) dst_off;
|
|
(void) len;
|
|
return (0);
|
|
}
|
|
|
|
static const struct file_operations_extend
|
|
fops __attribute__ ((unused)) = {
|
|
.kabi_fops = {},
|
|
.copy_file_range = test_copy_file_range,
|
|
.clone_file_range = test_clone_file_range,
|
|
};
|
|
],[])
|
|
])
|
|
AC_DEFUN([ZFS_AC_KERNEL_VFS_FILE_OPERATIONS_EXTEND], [
|
|
AC_MSG_CHECKING([whether file_operations_extend takes \
|
|
.copy_file_range() and .clone_file_range()])
|
|
ZFS_LINUX_TEST_RESULT([vfs_file_operations_extend], [
|
|
AC_MSG_RESULT([yes])
|
|
AC_DEFINE(HAVE_VFS_FILE_OPERATIONS_EXTEND, 1,
|
|
[file_operations_extend takes .copy_file_range()
|
|
and .clone_file_range()])
|
|
],[
|
|
AC_MSG_RESULT([no])
|
|
])
|
|
])
|