From: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Date: Thu, 12 Jul 2007 16:27:45 +0000 (+0100)
Subject: dm io: fix panic on large request
X-Git-Tag: v2.6.23-rc1~1095
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=596f138eede0c113aa655937c8be85fc15ccd61c;p=pandora-kernel.git

dm io: fix panic on large request

bio_alloc_bioset() will return NULL if 'num_vecs' is too large.
Use bio_get_nr_vecs() to get estimation of maximum number.

Cc: stable@kernel.org
Signed-off-by: "Jun'ichi Nomura" <j-nomura@ce.jp.nec.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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