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| author | Christoph Hellwig <hch@lst.de> | 2010-06-15 17:52:52 +0200 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2010-06-22 14:38:01 +0200 |
| commit | 1e297c323590d3deae46e566956cc4351e2aa5da (patch) | |
| tree | beadd56b5142b32bc63002efdcfcee4a2ff82bf0 | |
| parent | c7126d5b3216e57b4e388e3fd34faa785b8e4bd0 (diff) | |
| download | qemu-1e297c323590d3deae46e566956cc4351e2aa5da.zip qemu-1e297c323590d3deae46e566956cc4351e2aa5da.tar.gz qemu-1e297c323590d3deae46e566956cc4351e2aa5da.tar.bz2 | |
block: fix physical_block_size calculation
Both SCSI and virtio expect the physical block size relative to the
logical block size. So get the factor first before calculating the
log2.
Reported-by: Mike Cao <bcao@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
| -rw-r--r-- | block_int.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/block_int.h b/block_int.h index e3bfd19..b64a009 100644 --- a/block_int.h +++ b/block_int.h @@ -224,7 +224,9 @@ static inline unsigned int get_physical_block_exp(BlockConf *conf) { unsigned int exp = 0, size; - for (size = conf->physical_block_size; size > 512; size >>= 1) { + for (size = conf->physical_block_size; + size > conf->logical_block_size; + size >>= 1) { exp++; } |