[LU-529] Fix Direct IO pages support in osc cache

Thu, 8 Feb 2018 18:13:46 +0000

There are several problems in current clio implementation:
1. may mix caching and direct io pages, this will cause problem if OST space is running out because it may return -ENOSPC even for OBD_BRW_FROM_GRANT pages;
2. after lu-485 is committed, there may be two cl_page in cache pointing to the same file index;

we should issue different RPCs for caching and direct pages to fix these issues.

Whamcloud Community JIRA

[LU-529] Fix Direct IO pages support in osc cache