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-rw-r--r--config/kernel-get-disk-and-module.m419
-rw-r--r--config/kernel.m41
-rw-r--r--include/linux/blkdev_compat.h8
-rw-r--r--module/zfs/zvol.c2
4 files changed, 29 insertions, 1 deletions
diff --git a/config/kernel-get-disk-and-module.m4 b/config/kernel-get-disk-and-module.m4
new file mode 100644
index 000000000..2a51a5af7
--- /dev/null
+++ b/config/kernel-get-disk-and-module.m4
@@ -0,0 +1,19 @@
+dnl #
+dnl # 4.16 API change
+dnl # Verify if get_disk_and_module() symbol is available.
+dnl #
+AC_DEFUN([ZFS_AC_KERNEL_GET_DISK_AND_MODULE],
+ [AC_MSG_CHECKING([whether get_disk_and_module() is available])
+ ZFS_LINUX_TRY_COMPILE_SYMBOL([
+ #include <linux/genhd.h>
+ ], [
+ struct gendisk *disk = NULL;
+ (void) get_disk_and_module(disk);
+ ], [get_disk_and_module], [block/genhd.c], [
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_GET_DISK_AND_MODULE,
+ 1, [get_disk_and_module() is available])
+ ], [
+ AC_MSG_RESULT(no)
+ ])
+])
diff --git a/config/kernel.m4 b/config/kernel.m4
index a1bbbc2de..acd7f9618 100644
--- a/config/kernel.m4
+++ b/config/kernel.m4
@@ -40,6 +40,7 @@ AC_DEFUN([ZFS_AC_CONFIG_KERNEL], [
ZFS_AC_KERNEL_BLK_QUEUE_MAX_SEGMENTS
ZFS_AC_KERNEL_BLK_QUEUE_HAVE_BIO_RW_UNPLUG
ZFS_AC_KERNEL_BLK_QUEUE_HAVE_BLK_PLUG
+ ZFS_AC_KERNEL_GET_DISK_AND_MODULE
ZFS_AC_KERNEL_GET_DISK_RO
ZFS_AC_KERNEL_GET_GENDISK
ZFS_AC_KERNEL_HAVE_BIO_SET_OP_ATTRS
diff --git a/include/linux/blkdev_compat.h b/include/linux/blkdev_compat.h
index c8a8e856d..4406493e4 100644
--- a/include/linux/blkdev_compat.h
+++ b/include/linux/blkdev_compat.h
@@ -139,6 +139,14 @@ blk_queue_set_read_ahead(struct request_queue *q, unsigned long ra_pages)
#endif
}
+#ifndef HAVE_GET_DISK_AND_MODULE
+static inline struct kobject *
+get_disk_and_module(struct gendisk *disk)
+{
+ return (get_disk(disk));
+}
+#endif
+
#ifndef HAVE_GET_DISK_RO
static inline int
get_disk_ro(struct gendisk *disk)
diff --git a/module/zfs/zvol.c b/module/zfs/zvol.c
index b0622c2ba..d37e9e70a 100644
--- a/module/zfs/zvol.c
+++ b/module/zfs/zvol.c
@@ -1589,7 +1589,7 @@ zvol_probe(dev_t dev, int *part, void *arg)
struct kobject *kobj;
zv = zvol_find_by_dev(dev);
- kobj = zv ? get_disk(zv->zv_disk) : NULL;
+ kobj = zv ? get_disk_and_module(zv->zv_disk) : NULL;
ASSERT(zv == NULL || MUTEX_HELD(&zv->zv_state_lock));
if (zv)
mutex_exit(&zv->zv_state_lock);