From: Chris Ball <cjb@laptop.org>
Date: Mon, 27 Apr 2009 11:29:03 +0000 (-0400)
Subject: Btrfs: When shrinking, only update disk size on success
X-Git-Tag: v2.6.30-rc4~21^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d6397baee468809ef311e763dfc6e9f73418f8a6;p=pandora-kernel.git

Btrfs: When shrinking, only update disk size on success

Previously, we updated a device's size prior to attempting a shrink
operation.  This patch moves the device resizing logic to only happen if
the shrink completes successfully.  In the process, it introduces a new
field to btrfs_device -- disk_total_bytes -- to track the on-disk size.

Signed-off-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
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