[RFC] A couple of questions about the paged I/O sub system
From: Ian Kent
Date: Wed Oct 21 2015 - 02:40:10 EST
Hi all,
I've been looking through some of the page reclaim code and at
truncate_inode_pages().
I'm not familiar with the code and I'm struggling to understand it.
One thing that is puzzling me right now is, if a file has pages that
have been modified and are swapped out when pagevec_lookup_entries() is
called will they be found?
If not then how does truncate_inode_pages(_range)() handle waiting for
these pages to be swapped back in to perform the writeback and
truncation?
Anyone, please?
Ian
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