| dnl # |
| dnl # Linux 2.6.38 - 3.x API |
| dnl # The fallocate callback was moved from the inode_operations |
| dnl # structure to the file_operations structure. |
| dnl # |
| dnl # |
| dnl # Linux 3.15+ |
| dnl # fallocate learned a new flag, FALLOC_FL_ZERO_RANGE |
| dnl # |
| AC_DEFUN([ZFS_AC_KERNEL_SRC_FALLOCATE], [ |
| ZFS_LINUX_TEST_SRC([file_fallocate], [ |
| #include <linux/fs.h> |
| |
| long test_fallocate(struct file *file, int mode, |
| loff_t offset, loff_t len) { return 0; } |
| |
| static const struct file_operations |
| fops __attribute__ ((unused)) = { |
| .fallocate = test_fallocate, |
| }; |
| ], []) |
| ZFS_LINUX_TEST_SRC([falloc_fl_zero_range], [ |
| #include <linux/falloc.h> |
| ],[ |
| int flags __attribute__ ((unused)); |
| flags = FALLOC_FL_ZERO_RANGE; |
| ]) |
| ]) |
| |
| AC_DEFUN([ZFS_AC_KERNEL_FALLOCATE], [ |
| AC_MSG_CHECKING([whether fops->fallocate() exists]) |
| ZFS_LINUX_TEST_RESULT([file_fallocate], [ |
| AC_MSG_RESULT(yes) |
| AC_MSG_CHECKING([whether FALLOC_FL_ZERO_RANGE exists]) |
| ZFS_LINUX_TEST_RESULT([falloc_fl_zero_range], [ |
| AC_MSG_RESULT(yes) |
| AC_DEFINE(HAVE_FALLOC_FL_ZERO_RANGE, 1, [FALLOC_FL_ZERO_RANGE is defined]) |
| ],[ |
| AC_MSG_RESULT(no) |
| ]) |
| ],[ |
| ZFS_LINUX_TEST_ERROR([file_fallocate]) |
| ]) |
| ]) |
