[Qemu-devel] [PATCH 5/7] block: default to 0 minimal / optiomal I/O size

[Kevin Wolf]

From: Christoph Hellwig <address@hidden>

Currently we set them to 512 bytes unless manually specified.  Unforuntaly
some brain-dead partitioning tools create unaligned partitions if they
get low enough optiomal I/O size values, so don't report any at all
unless explicitly set.

Signed-off-by: Christoph Hellwig <address@hidden>
Signed-off-by: Kevin Wolf <address@hidden>
---
 block_int.h |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/block_int.h b/block_int.h
index 96ff4cf..f075a8c 100644
--- a/block_int.h
+++ b/block_int.h
@@ -243,7 +243,7 @@ static inline unsigned int get_physical_block_exp(BlockConf 
*conf)
                        _conf.logical_block_size, 512),                  \
     DEFINE_PROP_UINT16("physical_block_size", _state,                   \
                        _conf.physical_block_size, 512),                 \
-    DEFINE_PROP_UINT16("min_io_size", _state, _conf.min_io_size, 512),  \
-    DEFINE_PROP_UINT32("opt_io_size", _state, _conf.opt_io_size, 512)
+    DEFINE_PROP_UINT16("min_io_size", _state, _conf.min_io_size, 0),  \
+    DEFINE_PROP_UINT32("opt_io_size", _state, _conf.opt_io_size, 0)
 
 #endif /* BLOCK_INT_H */
-- 
1.7.1.1