From: "Juan J. Quintela" <quintela@fi.udc.es>
To: ac@muc.de
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>,
Dave Jones <dave@denial.force9.co.uk>,
Rik van Riel <riel@conectiva.com.br>,
linux-mm@kvack.org, lkml <linux-kernel@vger.rutgers.edu>
Subject: Re: PATCH: Improvement in shrink_mmap (take 2)
Date: 15 Jun 2000 02:18:31 +0200 [thread overview]
Message-ID: <yttsnuf6bl4.fsf@serpe.mitica> (raw)
In-Reply-To: "Juan J. Quintela"'s message of "15 Jun 2000 00:19:41 +0200"
Hi
James Manning told me that this test is easier to optimize
(global result is the same).
Later, Juan.
diff -urN --exclude-from=/home/lfcia/quintela/work/kernel/exclude ac18/mm/filemap.c prueba/mm/filemap.c
--- ac18/mm/filemap.c Thu Jun 15 00:28:22 2000
+++ prueba/mm/filemap.c Thu Jun 15 02:14:59 2000
@@ -351,7 +351,9 @@
* of zone - it's old.
*/
if (page->buffers) {
- int wait = ((gfp_mask & __GFP_IO) && (nr_dirty-- < 0));
+ int wait = ((gfp_mask & __GFP_IO) && (--nr_dirty < 0));
+ if(nr_dirty < 0)
+ nr_dirty = priority;
if (!try_to_free_buffers(page, wait))
goto unlock_continue;
/* page was locked, inode can't go away under us */
--
In theory, practice and theory are the same, but in practice they
are different -- Larry McVoy
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prev parent reply other threads:[~2000-06-15 0:18 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-06-14 22:19 PATCH: Improvement in shrink_mmap Juan J. Quintela
2000-06-15 0:18 ` Juan J. Quintela [this message]
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