diff options
Diffstat (limited to 'config')
| -rw-r--r-- | config/kernel-discard-granularity.m4 | 20 | ||||
| -rw-r--r-- | config/kernel.m4 | 1 |
2 files changed, 21 insertions, 0 deletions
diff --git a/config/kernel-discard-granularity.m4 b/config/kernel-discard-granularity.m4 new file mode 100644 index 000000000..2c677c909 --- /dev/null +++ b/config/kernel-discard-granularity.m4 @@ -0,0 +1,20 @@ +dnl # +dnl # 2.6.33 API change +dnl # Discard granularity and alignment restrictions may now be set. +dnl # +AC_DEFUN([ZFS_AC_KERNEL_DISCARD_GRANULARITY], [ + AC_MSG_CHECKING([whether ql->discard_granularity is available]) + ZFS_LINUX_TRY_COMPILE([ + #include <linux/blkdev.h> + ],[ + struct queue_limits ql __attribute__ ((unused)); + + ql.discard_granularity = 0; + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_DISCARD_GRANULARITY, 1, + [ql->discard_granularity is available]) + ],[ + AC_MSG_RESULT(no) + ]) +]) diff --git a/config/kernel.m4 b/config/kernel.m4 index a40bb5b6c..260ad84f4 100644 --- a/config/kernel.m4 +++ b/config/kernel.m4 @@ -39,6 +39,7 @@ AC_DEFUN([ZFS_AC_CONFIG_KERNEL], [ ZFS_AC_KERNEL_GET_GENDISK ZFS_AC_KERNEL_RQ_IS_SYNC ZFS_AC_KERNEL_RQ_FOR_EACH_SEGMENT + ZFS_AC_KERNEL_DISCARD_GRANULARITY ZFS_AC_KERNEL_CONST_XATTR_HANDLER ZFS_AC_KERNEL_XATTR_HANDLER_GET ZFS_AC_KERNEL_XATTR_HANDLER_SET |