From: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Date: Thu, 11 Sep 2008 16:35:39 +0000 (+0200)
Subject: sg: disable interrupts inside sg_copy_buffer
X-Git-Tag: v2.6.27-rc7~51^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=50bed2e2862a8f3a4f7d683d0d27292e71ef18b9;p=pandora-kernel.git

sg: disable interrupts inside sg_copy_buffer

The callers of sg_copy_buffer must disable interrupts before calling
it (since it uses kmap_atomic). Some callers use it on
interrupt-disabled code but some need to take the trouble to disable
interrupts just for this. No wonder they forget about it and we hit a
bug like:

http://bugzilla.kernel.org/show_bug.cgi?id=11529

James said that it might be better to disable interrupts inside the
function rather than risk the callers getting it wrong.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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