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-rw-r--r--config/kernel-blk-queue.m415
1 files changed, 15 insertions, 0 deletions
diff --git a/config/kernel-blk-queue.m4 b/config/kernel-blk-queue.m4
index bb5903b31..15dbe1c7d 100644
--- a/config/kernel-blk-queue.m4
+++ b/config/kernel-blk-queue.m4
@@ -377,6 +377,14 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_BLK_MQ], [
(void) blk_mq_alloc_tag_set(&tag_set);
return BLK_STS_OK;
], [])
+ ZFS_LINUX_TEST_SRC([blk_mq_rq_hctx], [
+ #include <linux/blk-mq.h>
+ #include <linux/blkdev.h>
+ ], [
+ struct request rq = {0};
+ struct blk_mq_hw_ctx *hctx = NULL;
+ rq.mq_hctx = hctx;
+ ], [])
])
AC_DEFUN([ZFS_AC_KERNEL_BLK_MQ], [
@@ -384,6 +392,13 @@ AC_DEFUN([ZFS_AC_KERNEL_BLK_MQ], [
ZFS_LINUX_TEST_RESULT([blk_mq], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_BLK_MQ, 1, [block multiqueue is available])
+ AC_MSG_CHECKING([whether block multiqueue hardware context is cached in struct request])
+ ZFS_LINUX_TEST_RESULT([blk_mq_rq_hctx], [
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_BLK_MQ_RQ_HCTX, 1, [block multiqueue hardware context is cached in struct request])
+ ], [
+ AC_MSG_RESULT(no)
+ ])
], [
AC_MSG_RESULT(no)
])