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| author | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2010-07-18 10:42:23 +0900 |
|---|---|---|
| committer | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2010-07-23 10:02:15 +0900 |
| commit | 26dfdd8e29f28c08aa67861b3c83d0f3f7d30cee (patch) | |
| tree | 3cc14a71010b454f6524006e973147837f040a39 /fs/nilfs2/btree.c | |
| parent | f8e6cc013b896d75d6ce4ec9e168014af1257fd8 (diff) | |
| download | op-kernel-dev-26dfdd8e29f28c08aa67861b3c83d0f3f7d30cee.zip op-kernel-dev-26dfdd8e29f28c08aa67861b3c83d0f3f7d30cee.tar.gz | |
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>
Diffstat (limited to 'fs/nilfs2/btree.c')
| -rw-r--r-- | fs/nilfs2/btree.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/nilfs2/btree.c b/fs/nilfs2/btree.c index 6462c70..4669389 100644 --- a/fs/nilfs2/btree.c +++ b/fs/nilfs2/btree.c @@ -71,9 +71,10 @@ static int nilfs_btree_get_block(const struct nilfs_bmap *btree, __u64 ptr, { struct address_space *btnc = &NILFS_BMAP_I(btree)->i_btnode_cache; struct buffer_head *bh; + sector_t pbn = 0; int err; - err = nilfs_btnode_submit_block(btnc, ptr, 0, bhp); + err = nilfs_btnode_submit_block(btnc, ptr, pbn, READ, bhp, &pbn); if (err) return err == -EEXIST ? 0 : err; |
