linux-kernel - Re: [RFC] [PATCH] Fix up needless kmap:s

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Message-ID: <147773.6460.qm@web36702.mail.mud.yahoo.com>
Date:	Sat, 3 Feb 2007 18:03:03 -0800 (PST)
From:	Alex Dubov <oakad@...oo.com>
To:	Pierre Ossman <drzeus-list@...eus.cx>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [RFC] [PATCH] Fix up needless kmap:s

The patch looks ok.

However, due to certain peculiarities with memorystick and xd I have to emulate a scatter-gather
in software. Considering that this particular aspect of implementation is the same for all card
types on this TI chip, it can be shared by tifm_sd driver as well. In this case highmem won't be
needed to be avoided and kmap_atomic will come back (may be).

And, by the way, to what extent pagefault_enable/pagefault_disable calls are needed? They are
present in k(u)map_atomic even for non-highmem pages/architectures.

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