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Commit | Line | Data |
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34037afe ED |
1 | dnl # |
2 | dnl # 2.6.30 API change | |
3 | dnl # The blk_queue_io_opt() function was added to indicate the optimal | |
4 | dnl # I/O size for the device. | |
5 | dnl # | |
6 | AC_DEFUN([ZFS_AC_KERNEL_BLK_QUEUE_IO_OPT], [ | |
7 | AC_MSG_CHECKING([whether blk_queue_io_opt() is available]) | |
8 | tmp_flags="$EXTRA_KCFLAGS" | |
9 | EXTRA_KCFLAGS="-Wno-unused-but-set-variable" | |
10 | ZFS_LINUX_TRY_COMPILE([ | |
11 | #include <linux/blkdev.h> | |
12 | ],[ | |
13 | struct request_queue *q = NULL; | |
14 | unsigned int opt = 1; | |
15 | (void) blk_queue_io_opt(q, opt); | |
16 | ],[ | |
17 | AC_MSG_RESULT(yes) | |
18 | AC_DEFINE(HAVE_BLK_QUEUE_IO_OPT, 1, | |
19 | [blk_queue_io_opt() is available]) | |
20 | ],[ | |
21 | AC_MSG_RESULT(no) | |
22 | ]) | |
23 | EXTRA_KCFLAGS="$tmp_flags" | |
24 | ]) |