diff options
Diffstat (limited to 'config/kernel-block-device-operations.m4')
| -rw-r--r-- | config/kernel-block-device-operations.m4 | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/config/kernel-block-device-operations.m4 b/config/kernel-block-device-operations.m4 new file mode 100644 index 000000000..5f2811c15 --- /dev/null +++ b/config/kernel-block-device-operations.m4 @@ -0,0 +1,57 @@ +dnl # +dnl # 2.6.38 API change +dnl # +AC_DEFUN([ZFS_AC_KERNEL_BLOCK_DEVICE_OPERATIONS_CHECK_EVENTS], [ + AC_MSG_CHECKING([whether bops->check_events() exists]) + tmp_flags="$EXTRA_KCFLAGS" + EXTRA_KCFLAGS="${NO_UNUSED_BUT_SET_VARIABLE}" + ZFS_LINUX_TRY_COMPILE([ + #include <linux/blkdev.h> + + unsigned int blk_check_events(struct gendisk *disk, + unsigned int clearing) { return (0); } + + static const struct block_device_operations + bops __attribute__ ((unused)) = { + .check_events = blk_check_events, + }; + ],[ + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_BLOCK_DEVICE_OPERATIONS_CHECK_EVENTS, 1, + [bops->check_events() exists]) + ],[ + AC_MSG_RESULT(no) + ]) + EXTRA_KCFLAGS="$tmp_flags" +]) + +dnl # +dnl # 3.10.x API change +dnl # +AC_DEFUN([ZFS_AC_KERNEL_BLOCK_DEVICE_OPERATIONS_RELEASE_VOID], [ + AC_MSG_CHECKING([whether bops->release() is void]) + tmp_flags="$EXTRA_KCFLAGS" + EXTRA_KCFLAGS="${NO_UNUSED_BUT_SET_VARIABLE}" + ZFS_LINUX_TRY_COMPILE([ + #include <linux/blkdev.h> + + void blk_release(struct gendisk *g, fmode_t mode) { return; } + + static const struct block_device_operations + bops __attribute__ ((unused)) = { + .open = NULL, + .release = blk_release, + .ioctl = NULL, + .compat_ioctl = NULL, + }; + ],[ + ],[ + AC_MSG_RESULT(void) + AC_DEFINE(HAVE_BLOCK_DEVICE_OPERATIONS_RELEASE_VOID, 1, + [bops->release() returns void]) + ],[ + AC_MSG_RESULT(int) + ]) + EXTRA_KCFLAGS="$tmp_flags" +]) |