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Date: Mon, 23 Mar 1998 21:20:06 GMT
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From: "Stephen C. Tweedie" <sct@dcs.ed.ac.uk>
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Subject: Re: __free_page() and free_pages() - Differences?
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To: Chirayu Patel <chirayu@wipro.tcpn.com>
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Hi,

On Sun, 22 Mar 1998 18:57:28 +0530 (GMT+0530), Chirayu Patel
<chirayu@wipro.tcpn.com> said:

> Hi ,
> I am having trouble understanding the difference between 
> the __free_page function and free_pages function in page_alloc.c

They are identical functions with different calling conventions.  When
we are freeing a page, we often have a page struct already in hand, so
__free_page is an alternative way of freeing a page which avoids the
unnecessary page map lookup.

--Stephen