commit 26dfdd8e29f28c08aa67861b3c83d0f3f7d30cee
author Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Sun Jul 18 10:42:23 2010 +0900
committer Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Fri Jul 23 10:02:15 2010 +0900
tree 3cc14a71010b454f6524006e973147837f040a39
parent f8e6cc013b896d75d6ce4ec9e168014af1257fd8

nilfs2: add read ahead mode to nilfs_btnode_submit_block

This adds mode argument to nilfs_btnode_submit_block() function and
allows it to issue a read-ahead request.

An optional submit_ptr argument is also added to store the actual
block address for which bio is sent.  submit_ptr is used for a series
of read-ahead requests, and helps to decide if each requested block is
continous to the previous one on disk.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>