Remove rq_for_each_segment() autotools check

Signed-off-by: Richard Yao <[email protected]>

3 files changed, 0 insertions, 90 deletions

diff --git a/config/kernel-rq-for-each_segment.m4 b/config/kernel-rq-for-each_segment.m4
deleted file mode 100644
index 84ce7d1ec..000000000
--- a/config/kernel-rq-for-each_segment.m4
+++ /dev/null
@@ -1,47 +0,0 @@
-dnl #
-dnl # 2.6.x API change
-dnl #
-dnl # 3.14 API change
-dnl #
-AC_DEFUN([ZFS_AC_KERNEL_RQ_FOR_EACH_SEGMENT], [
-	tmp_flags="$EXTRA_KCFLAGS"
-	EXTRA_KCFLAGS="${NO_UNUSED_BUT_SET_VARIABLE}"
-
-	AC_MSG_CHECKING([whether rq_for_each_segment() wants bio_vec *])
-	ZFS_LINUX_TRY_COMPILE([
-		#include <linux/blkdev.h>
-	],[
-		struct bio_vec *bv;
-		struct req_iterator iter;
-		struct request *req = NULL;
-		rq_for_each_segment(bv, req, iter) { }
-	],[
-		AC_MSG_RESULT(yes)
-		AC_DEFINE(HAVE_RQ_FOR_EACH_SEGMENT, 1,
-		          [rq_for_each_segment() is available])
-		AC_DEFINE(HAVE_RQ_FOR_EACH_SEGMENT_BVP, 1,
-		          [rq_for_each_segment() wants bio_vec *])
-	],[
-		AC_MSG_RESULT(no)
-	])
-
-	AC_MSG_CHECKING([whether rq_for_each_segment() wants bio_vec])
-	ZFS_LINUX_TRY_COMPILE([
-		#include <linux/blkdev.h>
-	],[
-		struct bio_vec bv;
-		struct req_iterator iter;
-		struct request *req = NULL;
-		rq_for_each_segment(bv, req, iter) { }
-	],[
-		AC_MSG_RESULT(yes)
-		AC_DEFINE(HAVE_RQ_FOR_EACH_SEGMENT, 1,
-		          [rq_for_each_segment() is available])
-		AC_DEFINE(HAVE_RQ_FOR_EACH_SEGMENT_BV, 1,
-		          [rq_for_each_segment() wants bio_vec])
-	],[
-		AC_MSG_RESULT(no)
-	])
-
-	EXTRA_KCFLAGS="$tmp_flags"
-])
diff --git a/config/kernel.m4 b/config/kernel.m4
index b3dd7232c..245406297 100644
--- a/config/kernel.m4
+++ b/config/kernel.m4
@@ -42,7 +42,6 @@ AC_DEFUN([ZFS_AC_CONFIG_KERNEL], [
 	ZFS_AC_KERNEL_GET_DISK_RO
 	ZFS_AC_KERNEL_GET_GENDISK
 	ZFS_AC_KERNEL_RQ_IS_SYNC
-	ZFS_AC_KERNEL_RQ_FOR_EACH_SEGMENT
 	ZFS_AC_KERNEL_DISCARD_GRANULARITY
 	ZFS_AC_KERNEL_CONST_XATTR_HANDLER
 	ZFS_AC_KERNEL_XATTR_HANDLER_GET
diff --git a/include/linux/blkdev_compat.h b/include/linux/blkdev_compat.h
index 0b5c8af42..b2b641840 100644
--- a/include/linux/blkdev_compat.h
+++ b/include/linux/blkdev_compat.h
@@ -249,48 +249,6 @@ rq_is_sync(struct request *req)
 }
 #endif /* HAVE_RQ_IS_SYNC */
 
-#ifndef HAVE_RQ_FOR_EACH_SEGMENT
-struct req_iterator {
-	int i;
-	struct bio *bio;
-};
-
-#define	for_each_bio(_bio)              \
-	for (; _bio; _bio = _bio->bi_next)
-
-#define	__rq_for_each_bio(_bio, rq)     \
-	if ((rq->bio))                  \
-		for (_bio = (rq)->bio; _bio; _bio = _bio->bi_next)
-
-#define	rq_for_each_segment(bvl, _rq, _iter)                    \
-	__rq_for_each_bio(_iter.bio, _rq)                       \
-		bio_for_each_segment(bvl, _iter.bio, _iter.i)
-
-#define	HAVE_RQ_FOR_EACH_SEGMENT_BVP 1
-#endif /* HAVE_RQ_FOR_EACH_SEGMENT */
-
-/*
- * 3.14 API change
- * rq_for_each_segment changed from taking bio_vec * to taking bio_vec.
- * We provide rq_for_each_segment4 which takes both.
- * You should not modify the fields in @bv and @bvp.
- *
- * Note: the if-else is just to inject the assignment before the loop body.
- */
-#ifdef HAVE_RQ_FOR_EACH_SEGMENT_BVP
-#define	rq_for_each_segment4(bv, bvp, rq, iter)	\
-	rq_for_each_segment(bvp, rq, iter)	\
-		if ((bv = *bvp), 0)		\
-			;			\
-		else
-#else
-#define	rq_for_each_segment4(bv, bvp, rq, iter)	\
-	rq_for_each_segment(bv, rq, iter)	\
-		if ((bvp = &bv), 0)		\
-			;			\
-		else
-#endif
-
 #ifdef HAVE_BIO_BVEC_ITER
 #define	BIO_BI_SECTOR(bio)	(bio)->bi_iter.bi_sector
 #define	BIO_BI_SIZE(bio)	(bio)->bi_iter.bi_size