Re: mmap vs fs cache

From: Phillip Susi
Date: Mon Mar 11 2013 - 11:03:31 EST

On 3/11/2013 7:52 AM, Jan Kara wrote:
Yep, that's because it isn't implemented.
Why do you think so? AFAICS it is implemented by setting VM_RAND_READ
flag in the VMA and do_async_mmap_readahead() and do_sync_mmap_readahead()
check for the flag and don't do anything if it is set...

Oh, don't know how I missed that... I was just looking for it the other day and couldn't find any references to VM_RandomReadHint so I assumed it hadn't been implemented.

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