From: "Juan J. Quintela" <quintela@fi.udc.es>
To: lkml <linux-kernel@vger.rutgers.edu>,
linux-mm@kvack.org, linus@orzan.fi.udc.es
Subject: PATCH:
Date: 12 Jul 2000 18:24:39 +0200 [thread overview]
Message-ID: <yttpuoj8gfs.fsf@serpe.mitica> (raw)
Hi
somebody pointed out that mm->rss is defined as an unsigned
long, I think this patch is needed to do the desired effect.
I have not founded other invalid uses of mm->rss. Only that
in someplaces it is tested against (mm->rss <= 0) instead of
(mm->rss == 0). I think that the last checks are harmless.
Later, Juan.
diff -urN --exclude-from=/home/lfcia/quintela/work/kernel/exclude base/mm/memory.c working/mm/memory.c
--- base/mm/memory.c Mon May 15 21:00:33 2000
+++ working/mm/memory.c Wed Jul 12 03:55:11 2000
@@ -373,12 +373,12 @@
spin_unlock(&mm->page_table_lock);
/*
* Update rss for the mm_struct (not necessarily current->mm)
+ * Notice that rss is an unsigned long.
*/
- if (mm->rss > 0) {
+ if (mm->rss > freed)
mm->rss -= freed;
- if (mm->rss < 0)
- mm->rss = 0;
- }
+ else
+ mm->rss = 0;
}
--
In theory, practice and theory are the same, but in practice they
are different -- Larry McVoy
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reply other threads:[~2000-07-12 16:24 UTC|newest]
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