All of lore.kernel.org
 help / color / mirror / Atom feed
From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
To: David Howells <dhowells@redhat.com>
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>,
	linux-fsdevel@vger.kernel.org
Subject: [PATCH 3/3] mm/readahead: Adjust file_ra in readahead_expand
Date: Wed,  7 Apr 2021 21:18:57 +0100	[thread overview]
Message-ID: <20210407201857.3582797-4-willy@infradead.org> (raw)
In-Reply-To: <20210407201857.3582797-1-willy@infradead.org>

If we grow the readahead window, we should tell the ondemand algorithm
that we've grown it, so that the next readahead starts at the right place.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
---
 mm/readahead.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/mm/readahead.c b/mm/readahead.c
index e115b1174981..65215c48f25c 100644
--- a/mm/readahead.c
+++ b/mm/readahead.c
@@ -661,6 +661,7 @@ void readahead_expand(struct readahead_control *ractl,
 		      loff_t new_start, size_t new_len)
 {
 	struct address_space *mapping = ractl->mapping;
+	struct file_ra_state *ra = ractl->ra;
 	pgoff_t new_index, new_nr_pages;
 	gfp_t gfp_mask = readahead_gfp_mask(mapping);
 
@@ -705,6 +706,8 @@ void readahead_expand(struct readahead_control *ractl,
 			return;
 		}
 		ractl->_nr_pages++;
+		ra->size++;
+		ra->async_size++;
 	}
 }
 EXPORT_SYMBOL(readahead_expand);
-- 
2.30.2


  parent reply	other threads:[~2021-04-07 20:22 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-07 20:18 [PATCH 0/3] readahead improvements 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 ` Matthew Wilcox (Oracle) [this message]
2021-04-07 22:43 ` [PATCH 0/3] readahead improvements David Howells
2021-04-08 10:57 ` 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

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210407201857.3582797-4-willy@infradead.org \
    --to=willy@infradead.org \
    --cc=dhowells@redhat.com \
    --cc=linux-fsdevel@vger.kernel.org \
    --subject='Re: [PATCH 3/3] mm/readahead: Adjust file_ra in readahead_expand' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.