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block-backend: add blk_get_max_iov()
authorStefan Hajnoczi <stefanha@redhat.com>
Thu, 9 Jul 2015 09:56:45 +0000 (10:56 +0100)
committerStefan Hajnoczi <stefanha@redhat.com>
Tue, 22 Dec 2015 08:01:07 +0000 (16:01 +0800)
Add a function to query BlockLimits.max_iov.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
block/block-backend.c
include/sysemu/block-backend.h

index 36ccc9e..f41d326 100644 (file)
@@ -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;
index fb068ea..dc24476 100644 (file)
@@ -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);