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nilfs2: add read ahead mode to nilfs_btnode_submit_block
authorRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Sun, 18 Jul 2010 01:42:23 +0000 (10:42 +0900)
committerRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Fri, 23 Jul 2010 01:02:15 +0000 (10:02 +0900)
commit26dfdd8e29f28c08aa67861b3c83d0f3f7d30cee
tree3cc14a71010b454f6524006e973147837f040a39tree | snapshot (tar.gz zip)
parentf8e6cc013b896d75d6ce4ec9e168014af1257fd8commit | diff
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>
fs/nilfs2/btnode.c diff | blob | blame | history
fs/nilfs2/btnode.h diff | blob | blame | history
fs/nilfs2/btree.c diff | blob | blame | history
fs/nilfs2/gcinode.c diff | blob | blame | history