On 2021/5/18 20:51, Fengnan Chang wrote:
For now,when overwrite compressed file, we need read old data to page
cache first and update pages.
But when we need overwrite whole cluster, we don't need old data
anymore.
I only see you just check the whole page was dirty as below rather than
the whole cluster is dirty during write().
Thanks,
+ if (len == PAGE_SIZE)
+ return 0;
/* compressed case */
prealloc = (ret < cc->cluster_size);
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