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Commit | Line | Data |
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ee5fd0bb ED |
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_DISCARD_GRANULARITY], [ | |
6 | AC_MSG_CHECKING([whether ql->discard_granularity is available]) | |
7 | ZFS_LINUX_TRY_COMPILE([ | |
8 | #include <linux/blkdev.h> | |
9 | ],[ | |
10 | struct queue_limits ql __attribute__ ((unused)); | |
11 | ||
12 | ql.discard_granularity = 0; | |
13 | ],[ | |
14 | AC_MSG_RESULT(yes) | |
15 | AC_DEFINE(HAVE_DISCARD_GRANULARITY, 1, | |
16 | [ql->discard_granularity is available]) | |
17 | ],[ | |
18 | AC_MSG_RESULT(no) | |
19 | ]) | |
20 | ]) |