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Diffstat (limited to 'config/kernel-blk-end-request.m4')
| -rw-r--r-- | config/kernel-blk-end-request.m4 | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/config/kernel-blk-end-request.m4 b/config/kernel-blk-end-request.m4 new file mode 100644 index 000000000..20ad1a926 --- /dev/null +++ b/config/kernel-blk-end-request.m4 @@ -0,0 +1,37 @@ +dnl # +dnl # 2.6.31 API change +dnl # In 2.6.29 kernels blk_end_request() was a GPL-only symbol, this was +dnl # changed in 2.6.31 so it may be used by non-GPL modules. +dnl # +AC_DEFUN([ZFS_AC_KERNEL_BLK_END_REQUEST], [ + AC_MSG_CHECKING([whether blk_end_request() is available]) + ZFS_LINUX_TRY_COMPILE([ + #include <linux/blkdev.h> + ],[ + struct request *req = NULL; + (void) blk_end_request(req, 0, 0); + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_BLK_END_REQUEST, 1, + [blk_end_request() is available]) + ],[ + AC_MSG_RESULT(no) + ]) + + AC_MSG_CHECKING([whether blk_end_request() is GPL-only]) + ZFS_LINUX_TRY_COMPILE([ + #include <linux/module.h> + #include <linux/blkdev.h> + + MODULE_LICENSE("CDDL"); + ],[ + struct request *req = NULL; + (void) blk_end_request(req, 0, 0); + ],[ + AC_MSG_RESULT(no) + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_BLK_END_REQUEST_GPL_ONLY, 1, + [blk_end_request() is GPL-only]) + ]) +]) |