From: Miklos Szeredi <mszeredi@suse.cz>
Date: Mon, 12 Jul 2010 12:41:40 +0000 (+0200)
Subject: fuse: don't use atomic kmap
X-Git-Tag: v2.6.36-rc1~499^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7909b1c64078087ac153fb47a2f50793fe3ee7d0;p=pandora-kernel.git

fuse: don't use atomic kmap

Don't use atomic kmap for mapping userspace buffers in device
read/write/splice.

This is necessary because the next patch (adding store notify)
requires that caller of fuse_copy_page() may sleep between
invocations.  The simplest way to ensure this is to change the atomic
kmaps to non-atomic ones.

Thankfully architectures where kmap() is not a no-op are going out of
fashion, so we can ignore the (probably negligible) performance impact
of this change.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
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