From: Nicholas Bellinger <nab@linux-iscsi.org>
Date: Thu, 30 May 2013 04:35:23 +0000 (-0700)
Subject: target/file: Fix off-by-one READ_CAPACITY bug for !S_ISBLK export
X-Git-Tag: v3.10-rc4~3^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=21363ca873334391992f2f424856aa864345bb61;p=pandora-kernel.git

target/file: Fix off-by-one READ_CAPACITY bug for !S_ISBLK export

This patch fixes a bug where FILEIO was incorrectly reporting the number
of logical blocks (+ 1) when using non struct block_device export mode.

It changes fd_get_blocks() to follow all other backend ->get_blocks() cases,
and reduces the calculated dev_size by one dev->dev_attrib.block_size
number of bytes, and also fixes initial fd_block_size assignment at
fd_configure_device() time introduced in commit 0fd97ccf4.

Reported-by: Wenchao Xia <xiawenc@linux.vnet.ibm.com>
Reported-by: Badari Pulavarty <pbadari@us.ibm.com>
Tested-by: Badari Pulavarty <pbadari@us.ibm.com>
Cc: stable@vger.kernel.org
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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