[PATCH v5 2/8] block-backend: Introduce blk_get_guest_block_size()

From: Xie Yongji <xieyongji@bytedance.com>
To: mst@redhat.com, jasowang@redhat.com, stefanha@redhat.com,
	sgarzare@redhat.com, kwolf@redhat.com, mreitz@redhat.com,
	mlureau@redhat.com, jsnow@redhat.com, eblake@redhat.com,
	Coiby.Xu@gmail.com, hreitz@redhat.com
Cc: qemu-block@nongnu.org, qemu-devel@nongnu.org
Subject: [PATCH v5 2/8] block-backend: Introduce blk_get_guest_block_size()
Date: Wed,  4 May 2022 15:40:45 +0800	[thread overview]
Message-ID: <20220504074051.90-3-xieyongji@bytedance.com> (raw)
In-Reply-To: <20220504074051.90-1-xieyongji@bytedance.com>

Support getting the guest block size for the block backend.
It's needed for the following commit.

Signed-off-by: Xie Yongji <xieyongji@bytedance.com>
---
 block/block-backend.c             | 6 ++++++
 include/sysemu/block-backend-io.h | 1 +
 2 files changed, 7 insertions(+)

diff --git a/block/block-backend.c b/block/block-backend.c
index 35457a6a1d..1582ff81c9 100644
--- a/block/block-backend.c
+++ b/block/block-backend.c
@@ -2106,6 +2106,12 @@ void blk_set_guest_block_size(BlockBackend *blk, int align)
     blk->guest_block_size = align;
 }
 
+int blk_get_guest_block_size(BlockBackend *blk)
+{
+    IO_CODE();
+    return blk->guest_block_size;
+}
+
 void *blk_try_blockalign(BlockBackend *blk, size_t size)
 {
     IO_CODE();
diff --git a/include/sysemu/block-backend-io.h b/include/sysemu/block-backend-io.h
index 6517c39295..7600822196 100644
--- a/include/sysemu/block-backend-io.h
+++ b/include/sysemu/block-backend-io.h
@@ -73,6 +73,7 @@ void blk_iostatus_set_err(BlockBackend *blk, int error);
 int blk_get_max_iov(BlockBackend *blk);
 int blk_get_max_hw_iov(BlockBackend *blk);
 void blk_set_guest_block_size(BlockBackend *blk, int align);
+int blk_get_guest_block_size(BlockBackend *blk);
 
 void blk_io_plug(BlockBackend *blk);
 void blk_io_unplug(BlockBackend *blk);
-- 
2.20.1


