tree 353960256ddf5f92aa391a2ea570bea1d2d11fa8
parent 5a3f23d515a2ebf0c750db80579ca57b28cbce6d
author Chris Mason <chris.mason@oracle.com> 1238521670 -0400
committer Chris Mason <chris.mason@oracle.com> 1238524078 -0400

Btrfs: try to free metadata pages when we free btree blocks

COW means we cycle though blocks fairly quickly, and once we
free an extent on disk, it doesn't make much sense to keep the pages around.

This commit tries to immediately free the page when we free the extent,
which lowers our memory footprint significantly.

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