projects / mirror_zfs-debian.git / blame
| Commit | Line | Data |
|---|---|---|
| c9c0d073 BB |
1 | dnl # |
| 2 | dnl # 2.6.29 API change | |
| 3 | dnl # In the 2.6.29 kernel blk_rq_bytes() was available as a GPL-only symbol. | |
| 4 | dnl # So we need to check the symbol license as well. As of 2.6.31 the | |
| 5 | dnl blk_rq_bytes() helper was changed to a static inline which we can use. | |
| 6 | dnl # | |
| 7 | AC_DEFUN([ZFS_AC_KERNEL_BLK_RQ_BYTES], [ | |
| 8 | AC_MSG_CHECKING([whether blk_rq_bytes() is available]) | |
| b9c59ec8 | 9 | tmp_flags="$EXTRA_KCFLAGS" |
| e191b54e | 10 | EXTRA_KCFLAGS="${NO_UNUSED_BUT_SET_VARIABLE}" |
| c9c0d073 BB |
11 | ZFS_LINUX_TRY_COMPILE([ |
| 12 | #include <linux/blkdev.h> | |
| 13 | ],[ | |
| 14 | struct request *req = NULL; | |
| 15 | (void) blk_rq_bytes(req); | |
| 16 | ],[ | |
| 17 | AC_MSG_RESULT(yes) | |
| 18 | AC_DEFINE(HAVE_BLK_RQ_BYTES, 1, | |
| 19 | [blk_rq_bytes() is available]) | |
| 20 | ],[ | |
| 21 | AC_MSG_RESULT(no) | |
| 22 | ]) | |
| 23 | ||
| 24 | AC_MSG_CHECKING([whether blk_rq_bytes() is GPL-only]) | |
| 25 | ZFS_LINUX_TRY_COMPILE([ | |
| 26 | #include <linux/module.h> | |
| 27 | #include <linux/blkdev.h> | |
| 28 | ||
| ea04106b | 29 | MODULE_LICENSE("$ZFS_META_LICENSE"); |
| c9c0d073 BB |
30 | ],[ |
| 31 | struct request *req = NULL; | |
| 32 | (void) blk_rq_bytes(req); | |
| 33 | ],[ | |
| 34 | AC_MSG_RESULT(no) | |
| 35 | ],[ | |
| 36 | AC_MSG_RESULT(yes) | |
| 37 | AC_DEFINE(HAVE_BLK_RQ_BYTES_GPL_ONLY, 1, | |
| 38 | [blk_rq_bytes() is GPL-only]) | |
| 39 | ]) | |
| b9c59ec8 | 40 | EXTRA_KCFLAGS="$tmp_flags" |
| c9c0d073 | 41 | ]) |