[Qemu-devel] [PATCH for-2.5 2/4] block-backend: add blk_get_max_iov()

[Stefan Hajnoczi <stefanha@redhat.com>]

Add a function to query BlockLimits.max_iov.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
---
 block/block-backend.c          | 5 +++++
 include/sysemu/block-backend.h | 1 +
 2 files changed, 6 insertions(+)

diff --git a/block/block-backend.c b/block/block-backend.c
index aee8a12..5108aec 100644
--- a/block/block-backend.c
+++ b/block/block-backend.c
@@ -777,6 +777,11 @@ int blk_get_max_transfer_length(BlockBackend *blk)
     return blk->bs->bl.max_transfer_length;
 }
 
+int blk_get_max_iov(BlockBackend *blk)
+{
+    return blk->bs->bl.max_iov;
+}
+
 void blk_set_guest_block_size(BlockBackend *blk, int align)
 {
     bdrv_set_guest_block_size(blk->bs, align);
diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h
index 8fc960f..c114440 100644
--- a/include/sysemu/block-backend.h
+++ b/include/sysemu/block-backend.h
@@ -135,6 +135,7 @@ void blk_lock_medium(BlockBackend *blk, bool locked);
 void blk_eject(BlockBackend *blk, bool eject_flag);
 int blk_get_flags(BlockBackend *blk);
 int blk_get_max_transfer_length(BlockBackend *blk);
+int blk_get_max_iov(BlockBackend *blk);
 void blk_set_guest_block_size(BlockBackend *blk, int align);
 void *blk_blockalign(BlockBackend *blk, size_t size);
 bool blk_op_is_blocked(BlockBackend *blk, BlockOpType op, Error **errp);
-- 
2.4.3