Btrfs: When shrinking, only update disk size on success
authorChris Ball <cjb@laptop.org>
Mon, 27 Apr 2009 11:29:03 +0000 (07:29 -0400)
committerChris Mason <chris.mason@oracle.com>
Mon, 27 Apr 2009 11:40:51 +0000 (07:40 -0400)
commitd6397baee468809ef311e763dfc6e9f73418f8a6
treeb8f20c01239674eea287c1665fbf96fb92dfcb00
parent59bc5c758ece00fb0b2a170dd8fbbf31f1856c8a
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>
fs/btrfs/volumes.c
fs/btrfs/volumes.h