tree 0b79fd9bf377094f6fa6f5f923fe192515672af3
parent f679a84034be6f7da123be786bbd8838bf3e9207
author Yan, Zheng <zheng.yan@oracle.com> 1253798251 -0400
committer Chris Mason <chris.mason@oracle.com> 1253798251 -0400

Btrfs: relocate file extents in clusters

The extent relocation code copy file extents one by one when
relocating data block group. This is inefficient if file
extents are small. This patch makes the relocation code copy
file extents in clusters. So we can can make better use of
read-ahead.

Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>