On Wed, Dec 27, 2017 at 7:47 PM, <tang.junhui@xxxxxxxxxx> wrote:
> From: Tang Junhui <tang.junhui@xxxxxxxxxx>
>
> More importantly,
>> + while (!kthread_should_stop() && next) {
>> ...
>> + if (nk != 0 && !keys_contiguous(dc, keys[nk-1], next))
>> + break;
>> +
>> + size += KEY_SIZE(&next->key);
>> + keys[nk++] = next;
>> + } while ((next = bch_keybuf_next(&dc->writeback_keys)));
>
> if the "next" key does not satisfy the contiguous condition, does this
> key not write-back to the backend device?
I believe the current code is correct--- it is not written back *this
time* (since it is not contiguous), but will be written back the next
time through the loop (next is not changed).
Mike
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