From: Michel Hubert <mhubert@matrox.com>
To: linux-mm@kvack.org
Subject: [Fwd: remap_page_range() vs nopage()]
Date: 14 Jul 2004 18:43:06 -0400 [thread overview]
Message-ID: <1089844986.15840.144.camel@blackcomb> (raw)
Hello,
I previously posted this question to kernelnewbies.org but without
getting any answer. I hope it is not too basic for this mailing list...
It's written in Linux Device Driver 2nd edition that remap_page_range
(which maps an entire range at once) should be used for device IO
whereas nopage (which maps a single page at a time) should be used for
real physical memory.
However, I noticed that mmap_mem() in drivers/char/mem.c uses
exclusively remap_page_range. How could this work when dealing with non
contiguous physical memory ?
Thank you,
Michel
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next reply other threads:[~2004-07-14 22:41 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-07-14 22:43 Michel Hubert [this message]
2004-07-14 22:56 ` [Fwd: remap_page_range() vs nopage()] William Lee Irwin III
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