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bucket size must be a power of two

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Kent Overstreet 2016-09-05 18:20:21 -08:00
parent 580ec0497a
commit 837a476cc1
1 changed files with 2 additions and 0 deletions
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libbcache.c
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@ -90,6 +90,8 @@ void bcache_format(struct dev_opts *devs, size_t nr_devs,
unsigned scale = max(1U, unsigned scale = max(1U,
ilog2(i->size / min_size(i->bucket_size)) / 4); ilog2(i->size / min_size(i->bucket_size)) / 4);
scale = rounddown_pow_of_two(scale);
/* max bucket size 1 mb */ /* max bucket size 1 mb */
i->bucket_size = min(i->bucket_size * scale, 1U << 11); i->bucket_size = min(i->bucket_size * scale, 1U << 11);
} else { } else {