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os/bluestore/StupidAllocator: use cbits instead of calculating shift manually

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Signed-off-by: Sage Weil <sage@redhat.com>
This commit is contained in:
Sage Weil 2016-06-06 13:33:44 -04:00
parent e411302229
commit 3e3f48b908
1 changed files with 1 additions and 5 deletions
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6
src/os/bluestore/StupidAllocator.cc
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@ -26,11 +26,7 @@ StupidAllocator::~StupidAllocator()
unsigned StupidAllocator::_choose_bin(uint64_t orig_len)
{
uint64_t len = orig_len / g_conf->bdev_block_size;
int bin = 0;
while (len && bin + 1 < (int)free.size()) {
len >>= 1;
bin++;
}
int bin = std::min((int)cbits(len), (int)free.size() - 1);
dout(30) << __func__ << " len " << orig_len << " -> " << bin << dendl;
return bin;
}