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authorChristoph Hellwig <hch@lst.de>2010-07-23 09:35:04 +0200
committerKevin Wolf <kwolf@redhat.com>2010-07-26 13:39:39 +0200
commit55459498b226ab3314c463b2d5766f3650949e80 (patch)
tree1468fafd4472b78b84481d3f249b914f292f1c05
parent6c6b6ba20a167a89f85606125ee1e10eafef5b33 (diff)
downloadfocaccia-qemu-55459498b226ab3314c463b2d5766f3650949e80.tar.gz
focaccia-qemu-55459498b226ab3314c463b2d5766f3650949e80.zip
block: default to 0 minimal / optiomal I/O size
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 <hch@lst.de>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
-rw-r--r--block_int.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/block_int.h b/block_int.h
index 96ff4cf1bc..f075a8cba5 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 */