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From: David Howells <>
To: "Matthew Wilcox (Oracle)" <>
Subject: Re: [PATCH 0/3] readahead improvements
Date: Wed, 07 Apr 2021 23:43:31 +0100	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

Matthew Wilcox (Oracle) <> wrote:

> As requested, fix up readahead_expand() so as to not confuse the ondemand
> algorithm.  Also make the documentation slightly better.  Dave, could you
> put in some debug and check this actually works?  I don't generally test
> with any filesystems that use readahead_expand(), but printing (index,
> nr_to_read, lookahead_size) in page_cache_ra_unbounded() would let a human
> (such as your good self) determine whether it's working approximately
> as designed.

I added the patches to my fscache-netfs-lib branch and ran the quick group of
xfstests with afs and got the same results.


  parent reply	other threads:[~2021-04-07 22:43 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-07 20:18 Matthew Wilcox (Oracle)
2021-04-07 20:18 ` [PATCH 1/3] mm/filemap: Pass the file_ra_state in the ractl Matthew Wilcox (Oracle)
2021-04-07 20:18 ` [PATCH 2/3] fs: Document file_ra_state Matthew Wilcox (Oracle)
2021-04-07 20:18 ` [PATCH 3/3] mm/readahead: Adjust file_ra in readahead_expand Matthew Wilcox (Oracle)
2021-04-07 22:43 ` David Howells [this message]
2021-04-08 10:57 ` [PATCH 0/3] readahead improvements riteshh
2021-04-08 13:15   ` Brendan Gregg
2021-04-08 12:51 ` [PATCH] mm, netfs: Fix readahead bits David Howells
2021-04-08 13:09   ` Matthew Wilcox

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