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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/gcinode.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/gcinode.c')
| -rw-r--r-- | fs/nilfs2/gcinode.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/fs/nilfs2/gcinode.c b/fs/nilfs2/gcinode.c index b634382..bed3a78 100644 --- a/fs/nilfs2/gcinode.c +++ b/fs/nilfs2/gcinode.c @@ -151,8 +151,10 @@ int nilfs_gccache_submit_read_data(struct inode *inode, sector_t blkoff, int nilfs_gccache_submit_read_node(struct inode *inode, sector_t pbn, __u64 vbn, struct buffer_head **out_bh) { - int ret = nilfs_btnode_submit_block(&NILFS_I(inode)->i_btnode_cache, - vbn ? : pbn, pbn, out_bh); + int ret; + + ret = nilfs_btnode_submit_block(&NILFS_I(inode)->i_btnode_cache, + vbn ? : pbn, pbn, READ, out_bh, &pbn); if (ret == -EEXIST) /* internal code (cache hit) */ ret = 0; return ret; |
