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block: default to 0 minimal / optiomal I/O size

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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>
(cherry picked from commit 55459498b226ab3314c463b2d5766f3650949e80)

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Christoph Hellwig 2010-07-23 09:35:04 +02:00 committed by Anthony Liguori
parent 50aa457e1d
commit cc12b5c748
1 changed files with 2 additions and 2 deletions
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4
block_int.h
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@ -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 */