File bsc-1206791-09-pmem-use-fs_dax_get_by_bdev-inst... of Package drbd

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File bsc-1206791-09-pmem-use-fs_dax_get_by_bdev-instead-of-dax_get_by_ho.patch of Package drbd (Revision 043352f6d0b0160c9337c84336af7a18)

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From 998a1faccbbb7e7b6d1042e7fe841734671ee365 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christoph=20B=C3=B6hmwalder?=
 <christoph.boehmwalder@linbit.com>
Date: Wed, 6 Apr 2022 13:39:44 +0200
Subject: [PATCH] pmem: use fs_dax_get_by_bdev instead of dax_get_by_host

The {fs,}dax_get_by_host helpers went away.

---
by heming.zhao on 20230105

This patch partly refer code from drbd-9.1 branch commit
a68200c121de9e17a73a53962697fa32239e99f6

---

--- drbd-9.0.30~1+git.8e9c0812/drbd/drbd_dax_pmem.c	2023-01-05 20:50:39.022187673 +0800
+++ b/drbd/drbd_dax_pmem.c	2023-01-05 20:40:10.878947325 +0800
@@ -56,14 +56,11 @@ static int map_superblock_for_dax(struct
  */
 int drbd_dax_open(struct drbd_backing_dev *bdev)
 {
-	const char *disk_name = bdev->md_bdev->bd_disk->disk_name;
 	struct dax_device *dax_dev;
 	int err;
+	u64 part_off;
 
-	if (!blk_queue_dax(bdev->md_bdev->bd_disk->queue))
-		return -ENODEV;
-
-	dax_dev = dax_get_by_host(disk_name);
+	dax_dev = fs_dax_get_by_bdev(bdev->md_bdev, &part_off, NULL, NULL);
 	if (!dax_dev)
 		return -ENODEV;

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File bsc-1206791-09-pmem-use-fs_dax_get_by_bdev-instead-of-dax_get_by_ho.patch of Package drbd (Revision 043352f6d0b0160c9337c84336af7a18)

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