From: hunghochak@netscape.net (Ho Chak Hung)
To: linux-kernel@vger.kernel.org
Subject: about get_zeroed_page() and page_address()
Date: Tue, 26 Jun 2001 17:02:12 -0400 [thread overview]
Message-ID: <2BC44B50.39C55AFA.0F76C228@netscape.net> (raw)
In the get_zeroed_page()function, address = page_address(page)
1)Does address point to a contiguous block of 4KB of physical memory? i.e.can I access the individual bytes by *address++?
2)How is page_address() function defined? I did a grep and found something like: #define page_address(page) ({ if (!(page)->virtual) BUG(); (page)->virtual; })? What's (page)->virtual?
Thanks
Any help would be greatly appreciated.
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reply other threads:[~2001-06-26 21:02 UTC|newest]
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