On 2/16/12 2:39 AM, Andrea Righi wrote:
Arun, thank you very much for your review and testing. Probably we'll move to a different, memcg-based solution, so I don't think I'll post another version of this patch set as is. In case, I'll apply one of the workarounds for the rb_root attribute.
I'm not sure if the proposed memory.file.limit_in_bytes is the right interface. Two problems:
* The user is now required to figure out what is the right amount of page cache for the app (may change over time)
* If the app touches two sets of files, one with streaming access and the other which benefits from page cache (eg: a mapper task in a map reduce), memcg doesn't allow the user to specify the access pattern per-fd.
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