From: Jens Axboe <jaxboe@fusionio.com>
Date: Thu, 15 Jul 2010 16:49:31 +0000 (-0600)
Subject: block: fix problem with sending down discard that isn't of correct granularity
X-Git-Tag: v2.6.36-rc1~288^2~83
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=10d1f9e2ccfff40665a00ea0e0a0d11e54c9cbb1;p=pandora-kernel.git

block: fix problem with sending down discard that isn't of correct granularity

If the queue doesn't have a limit set, or it just set UINT_MAX like
we default to, we coud be sending down a discard request that isn't
of the correct granularity if the block size is > 512b.

Fix this by adjusting max_discard_sectors down to the proper
alignment.

Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
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