diff mbox

[PULL,03/10] block-backend: add blk_get_max_iov()

Message ID 1450774460-17259-4-git-send-email-stefanha@redhat.com
State New
Headers show

Commit Message

Stefan Hajnoczi Dec. 22, 2015, 8:54 a.m. UTC 
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(+)
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Patch

diff --git a/block/block-backend.c b/block/block-backend.c
index 36ccc9e..f41d326 100644
--- a/block/block-backend.c
+++ b/block/block-backend.c
@@ -1023,6 +1023,11 @@  int blk_get_max_transfer_length(BlockBackend *blk)
     }
 }
 
+int blk_get_max_iov(BlockBackend *blk)
+{
+    return blk->bs->bl.max_iov;
+}
+
 void blk_set_guest_block_size(BlockBackend *blk, int align)
 {
     blk->guest_block_size = align;
diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h
index fb068ea4..dc24476 100644
--- a/include/sysemu/block-backend.h
+++ b/include/sysemu/block-backend.h
@@ -146,6 +146,7 @@  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);