kernel-discard-granularity.m4

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    1 dnl #
    2 dnl # 2.6.33 API change
    3 dnl # Discard granularity and alignment restrictions may now be set.
    4 dnl #
    5 AC_DEFUN([ZFS_AC_KERNEL_SRC_DISCARD_GRANULARITY], [
    6         ZFS_LINUX_TEST_SRC([discard_granularity], [
    7                 #include <linux/blkdev.h>
    8         ],[
    9                 struct queue_limits ql __attribute__ ((unused));
   10                 ql.discard_granularity = 0;
   11         ])
   12 ])
   13 
   14 AC_DEFUN([ZFS_AC_KERNEL_DISCARD_GRANULARITY], [
   15         AC_MSG_CHECKING([whether ql->discard_granularity is available])
   16         ZFS_LINUX_TEST_RESULT([discard_granularity], [
   17                 AC_MSG_RESULT(yes)
   18         ],[
   19                 ZFS_LINUX_TEST_ERROR([ql->discard_granularity])
   20         ])
   21 ])

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FreeBSD/Linux Kernel Cross Reference sys/contrib/openzfs/config/kernel-discard-granularity.m4

FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/config/kernel-discard-granularity.m4