From: Nicholas Bellinger <nab@linux-iscsi.org>
Date: Wed, 16 May 2012 23:05:26 +0000 (-0700)
Subject: target: Fix bug in handling of FILEIO + block_device resize ops
X-Git-Tag: v3.2.18~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dc73d6c2c18e06f2b89401a12ad0a8976462901a;p=pandora-kernel.git

target: Fix bug in handling of FILEIO + block_device resize ops

commit cd9323fd68aee3c1c6b5b21e5746c9d1b586fb58 upstream.

This patch fixes a bug in the handling of FILEIO w/ underlying block_device
resize operations where the original fd_dev->fd_dev_size was incorrectly being
used in fd_get_blocks() for READ_CAPACITY response payloads.

This patch avoids using fd_dev->fd_dev_size for FILEIO devices with
an underlying block_device, and instead changes fd_get_blocks() to
get the sector count directly from i_size_read() as recommended by hch.

Reported-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
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