diff --git a/block-backup-loosen-restriction-on-readonly-bitmaps.patch b/block-backup-loosen-restriction-on-readonly-bitmaps.patch
new file mode 100644
index 0000000..ab0617c
--- /dev/null
+++ b/block-backup-loosen-restriction-on-readonly-bitmaps.patch
@@ -0,0 +1,51 @@
+From 801e9452bc80a38ee26fe12ba42356851acd6a9e Mon Sep 17 00:00:00 2001
+From: John Snow <jsnow@redhat.com>
+Date: Mon, 29 Jul 2019 16:35:54 -0400
+Subject: [PATCH] block/backup: loosen restriction on readonly bitmaps
+
+With the "never" sync policy, we actually can utilize readonly bitmaps
+now. Loosen the check at the QMP level, and tighten it based on
+provided arguments down at the job creation level instead.
+
+Signed-off-by: John Snow <jsnow@redhat.com>
+Reviewed-by: Max Reitz <mreitz@redhat.com>
+Message-id: 20190709232550.10724-19-jsnow@redhat.com
+Signed-off-by: John Snow <jsnow@redhat.com>
+---
+ block/backup.c | 6 ++++++
+ blockdev.c     | 2 +-
+ 2 files changed, 7 insertions(+), 1 deletion(-)
+
+diff --git a/block/backup.c b/block/backup.c
+index 84a56337ac..59ac2c0396 100644
+--- a/block/backup.c
++++ b/block/backup.c
+@@ -606,6 +606,12 @@ BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs,
+             return NULL;
+         }
+ 
++        /* If we need to write to this bitmap, check that we can: */
++        if (bitmap_mode != BITMAP_SYNC_MODE_NEVER &&
++            bdrv_dirty_bitmap_check(sync_bitmap, BDRV_BITMAP_DEFAULT, errp)) {
++            return NULL;
++        }
++
+         /* Create a new bitmap, and freeze/disable this one. */
+         if (bdrv_dirty_bitmap_create_successor(bs, sync_bitmap, errp) < 0) {
+             return NULL;
+diff --git a/blockdev.c b/blockdev.c
+index 34c8b651e1..efb69d343a 100644
+--- a/blockdev.c
++++ b/blockdev.c
+@@ -3533,7 +3533,7 @@ static BlockJob *do_backup_common(BackupCommon *backup,
+                        "when providing a bitmap");
+             return NULL;
+         }
+-        if (bdrv_dirty_bitmap_check(bmap, BDRV_BITMAP_DEFAULT, errp)) {
++        if (bdrv_dirty_bitmap_check(bmap, BDRV_BITMAP_ALLOW_RO, errp)) {
+             return NULL;
+         }
+     }
+-- 
+2.27.0
+