Btrfs: Optimize csum insertion to create larger items when possible

This reduces the number of calls to btrfs_extend_item and greatly lowers
the cpu usage while writing large files.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
3 files changed
tree: bb89f7548f3c537ed34ddf9d0ac71f3a6fefff85
  1. fs/