From: Andrew Morton <andrewm@uow.edu.au>
To: "linux-mm@kvack.org" <linux-mm@kvack.org>
Subject: vmtruncate question
Date: Wed, 12 Jul 2000 01:53:44 +0000 [thread overview]
Message-ID: <396BCFA8.C033D94A@uow.edu.au> (raw)
The flushes which surround the second call to zap_page_range()
would appear to be flushing more memory than is to be
zapped. Is this correct, or should it be:
--- memory.c.orig Wed Jul 12 11:49:08 2000
+++ memory.c Wed Jul 12 11:49:31 2000
@@ -980,9 +980,9 @@
partial_clear(mpnt, start);
start = (start + ~PAGE_MASK) & PAGE_MASK;
}
- flush_cache_range(mm, start, end);
+ flush_cache_range(mm, start, start + len);
zap_page_range(mm, start, len);
- flush_tlb_range(mm, start, end);
+ flush_tlb_range(mm, start, start + len);
} while ((mpnt = mpnt->vm_next_share) != NULL);
out_unlock:
spin_unlock(&mapping->i_shared_lock);
--
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next reply other threads:[~2000-07-12 1:53 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-07-12 1:53 Andrew Morton [this message]
2000-07-14 10:18 ` Stephen C. Tweedie
2000-07-14 12:57 ` Andrew Morton
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