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authorRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2010-07-18 10:42:23 +0900
committerRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2010-07-23 10:02:15 +0900
commit26dfdd8e29f28c08aa67861b3c83d0f3f7d30cee (patch)
tree3cc14a71010b454f6524006e973147837f040a39 /fs/nilfs2/gcinode.c
parentf8e6cc013b896d75d6ce4ec9e168014af1257fd8 (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>
Diffstat (limited to 'fs/nilfs2/gcinode.c')
-rw-r--r--fs/nilfs2/gcinode.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/fs/nilfs2/gcinode.c b/fs/nilfs2/gcinode.c
index b6343825f91a..bed3a783129b 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;