From: Tejun Heo <tj@kernel.org>
Date: Wed, 15 Apr 2009 13:10:23 +0000 (+0900)
Subject: scatterlist: make sure sg_miter_next() doesn't return 0 sized mappings
X-Git-Tag: v2.6.30-rc4~65^2~15
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=23c560a99d78bddf5c251bfa97bce19e4da4b3f3;p=pandora-kernel.git

scatterlist: make sure sg_miter_next() doesn't return 0 sized mappings

Impact: fix not-so-critical but annoying bug

sg_miter_next() returns 0 sized mapping if there is an zero sized sg
entry in the list or at the end of each iteration.  As the users
always check the ->length field, this bug shouldn't be critical other
than causing unnecessary iteration.

Fix it.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
---

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