File: kernel-discard-granularity.m4

package info (click to toggle)
zfs-linux 2.3.3-1
  • links: PTS, VCS
  • area: contrib
  • in suites: forky, sid
  • size: 70,488 kB
  • sloc: ansic: 393,047; sh: 67,422; asm: 47,734; python: 8,160; makefile: 5,105; perl: 859; sed: 41
file content (21 lines) | stat: -rw-r--r-- 568 bytes parent folder | download | duplicates (8)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
dnl #
dnl # 2.6.33 API change
dnl # Discard granularity and alignment restrictions may now be set.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_DISCARD_GRANULARITY], [
	ZFS_LINUX_TEST_SRC([discard_granularity], [
		#include <linux/blkdev.h>
	],[
		struct queue_limits ql __attribute__ ((unused));
		ql.discard_granularity = 0;
	])
])

AC_DEFUN([ZFS_AC_KERNEL_DISCARD_GRANULARITY], [
	AC_MSG_CHECKING([whether ql->discard_granularity is available])
	ZFS_LINUX_TEST_RESULT([discard_granularity], [
		AC_MSG_RESULT(yes)
	],[
		ZFS_LINUX_TEST_ERROR([ql->discard_granularity])
	])
])