Btrfs: use cluster->window_start when allocating from a cluster bitmap
authorJosef Bacik <josef@redhat.com>
Thu, 26 Jan 2012 20:01:11 +0000 (15:01 -0500)
committerChris Mason <chris.mason@oracle.com>
Thu, 26 Jan 2012 20:01:11 +0000 (15:01 -0500)
commit0b4a9d248f88e6773312f262e8185f23863d984a
treebd822950b56730d6be409c98291c4f2ba19678dc
parent8bedd51b6121c4607784d75f852828d25d119c52
Btrfs: use cluster->window_start when allocating from a cluster bitmap

We specifically set window_start in the cluster struct to indicate where the
cluster starts in a bitmap, but we've been using min_start to indicate where
we're searching from.  This is usually the start of the blockgroup, so
essentially means we're constantly searching from the start of any bitmap we
find, which completely negates all the trouble we go to in order to setup a
cluster.  So start using window_start to make sure we actually use the area we
found.  Thanks,

Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
fs/btrfs/free-space-cache.c