tree 8816eaabd20cfce5e37432ecf61cc8303863c48d
parent 0b4dcea579a1b6f4d249d61f5bc8adeaa7c895d8
author Chris Mason <chris.mason@oracle.com> 1244733887 -0400
committer Chris Mason <chris.mason@oracle.com> 1244733887 -0400

Btrfs: fix extent_buffer leak during tree log replay

During tree log replay, we read in the tree log roots,
process them and then free them.  A recent change
takes an extra reference on the root node of the tree
when the root is read in, and stores that reference
in root->commit_root.

This reference was not being freed, leaving us with
one buffer pinned in ram for each subvol with
a tree log root after a crash.

Signed-off-by: Chris Mason <chris.mason@oracle.com>