X-Git-Url: https://git.camperquake.de/gitweb.cgi?a=blobdiff_plain;ds=sidebyside;f=config%2Fkernel-blk-fetch-request.m4;fp=config%2Fkernel-blk-fetch-request.m4;h=34a5d2fa8f6c1ba0e486a934f5e04a6f5af6f3c5;hb=c9c0d073da561bcbefbdf09c87fc75b227415619;hp=0000000000000000000000000000000000000000;hpb=40b84e7aec6392187722e61e5a4a853b530bf60f;p=zfs.git

diff --git a/config/kernel-blk-fetch-request.m4 b/config/kernel-blk-fetch-request.m4
new file mode 100644
index 0000000..34a5d2f
--- /dev/null
+++ b/config/kernel-blk-fetch-request.m4
@@ -0,0 +1,22 @@
+dnl #
+dnl # 2.6.31 API change
+dnl # Request queue peek/retrieval interface cleanup, the blk_fetch_request()
+dnl # function replaces the elv_next_request() and blk_fetch_request()
+dnl # functions.  The updated blk_fetch_request() function returns the
+dnl # next available request and removed it from the request queue.
+dnl #
+AC_DEFUN([ZFS_AC_KERNEL_BLK_FETCH_REQUEST], [
+	AC_MSG_CHECKING([whether blk_fetch_request() is available])
+	ZFS_LINUX_TRY_COMPILE([
+		#include <linux/blkdev.h>
+	],[
+		struct request_queue *q = NULL;
+		(void) blk_fetch_request(q);
+	],[
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE_BLK_FETCH_REQUEST, 1,
+		          [blk_fetch_request() is available])
+	],[
+		AC_MSG_RESULT(no)
+	])
+])