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authorRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2009-08-15 02:29:28 +0900
committerRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2009-09-14 18:27:16 +0900
commit0f3fe33b398abbecfcf9f08c16959d1a9a14a49a (patch)
treea60a3e8a3b90b173a58a2ba9d86e1363598bd279 /fs
parent2e0c2c73923fed27337039ddfd69985e6c4b91fe (diff)
downloadlinux-0f3fe33b398abbecfcf9f08c16959d1a9a14a49a.tar.gz
nilfs2: convert nilfs_bmap_lookup to an inline function
The nilfs_bmap_lookup() is now a wrapper function of nilfs_bmap_lookup_at_level(). This moves the nilfs_bmap_lookup() to a header file converting it to an inline function and gives an opportunity for optimization. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Diffstat (limited to 'fs')
-rw-r--r--fs/nilfs2/bmap.c53
-rw-r--r--fs/nilfs2/bmap.h7
-rw-r--r--fs/nilfs2/mdt.c4
3 files changed, 28 insertions, 36 deletions
diff --git a/fs/nilfs2/bmap.c b/fs/nilfs2/bmap.c
index f98c5c4cf6e..08834df6ec6 100644
--- a/fs/nilfs2/bmap.c
+++ b/fs/nilfs2/bmap.c
@@ -36,6 +36,26 @@ struct inode *nilfs_bmap_get_dat(const struct nilfs_bmap *bmap)
return nilfs_dat_inode(NILFS_I_NILFS(bmap->b_inode));
}
+/**
+ * nilfs_bmap_lookup_at_level - find a data block or node block
+ * @bmap: bmap
+ * @key: key
+ * @level: level
+ * @ptrp: place to store the value associated to @key
+ *
+ * Description: nilfs_bmap_lookup_at_level() finds a record whose key
+ * matches @key in the block at @level of the bmap.
+ *
+ * Return Value: On success, 0 is returned and the record associated with @key
+ * is stored in the place pointed by @ptrp. On error, one of the following
+ * negative error codes is returned.
+ *
+ * %-EIO - I/O error.
+ *
+ * %-ENOMEM - Insufficient amount of memory available.
+ *
+ * %-ENOENT - A record associated with @key does not exist.
+ */
int nilfs_bmap_lookup_at_level(struct nilfs_bmap *bmap, __u64 key, int level,
__u64 *ptrp)
{
@@ -69,39 +89,6 @@ int nilfs_bmap_lookup_contig(struct nilfs_bmap *bmap, __u64 key, __u64 *ptrp,
return ret;
}
-/**
- * nilfs_bmap_lookup - find a record
- * @bmap: bmap
- * @key: key
- * @recp: pointer to record
- *
- * Description: nilfs_bmap_lookup() finds a record whose key matches @key in
- * @bmap.
- *
- * Return Value: On success, 0 is returned and the record associated with @key
- * is stored in the place pointed by @recp. On error, one of the following
- * negative error codes is returned.
- *
- * %-EIO - I/O error.
- *
- * %-ENOMEM - Insufficient amount of memory available.
- *
- * %-ENOENT - A record associated with @key does not exist.
- */
-int nilfs_bmap_lookup(struct nilfs_bmap *bmap,
- unsigned long key,
- unsigned long *recp)
-{
- __u64 ptr;
- int ret;
-
- /* XXX: use macro for level 1 */
- ret = nilfs_bmap_lookup_at_level(bmap, key, 1, &ptr);
- if (recp != NULL)
- *recp = ptr;
- return ret;
-}
-
static int nilfs_bmap_do_insert(struct nilfs_bmap *bmap, __u64 key, __u64 ptr)
{
__u64 keys[NILFS_BMAP_SMALL_HIGH + 1];
diff --git a/fs/nilfs2/bmap.h b/fs/nilfs2/bmap.h
index a4f64e54424..9980d7dbab9 100644
--- a/fs/nilfs2/bmap.h
+++ b/fs/nilfs2/bmap.h
@@ -142,7 +142,6 @@ struct nilfs_bmap {
int nilfs_bmap_test_and_clear_dirty(struct nilfs_bmap *);
int nilfs_bmap_read(struct nilfs_bmap *, struct nilfs_inode *);
void nilfs_bmap_write(struct nilfs_bmap *, struct nilfs_inode *);
-int nilfs_bmap_lookup(struct nilfs_bmap *, unsigned long, unsigned long *);
int nilfs_bmap_lookup_contig(struct nilfs_bmap *, __u64, __u64 *, unsigned);
int nilfs_bmap_insert(struct nilfs_bmap *, unsigned long, unsigned long);
int nilfs_bmap_delete(struct nilfs_bmap *, unsigned long);
@@ -161,6 +160,12 @@ void nilfs_bmap_init_gcdat(struct nilfs_bmap *, struct nilfs_bmap *);
void nilfs_bmap_commit_gcdat(struct nilfs_bmap *, struct nilfs_bmap *);
+static inline int nilfs_bmap_lookup(struct nilfs_bmap *bmap, __u64 key,
+ __u64 *ptr)
+{
+ return nilfs_bmap_lookup_at_level(bmap, key, 1, ptr);
+}
+
/*
* Internal use only
*/
diff --git a/fs/nilfs2/mdt.c b/fs/nilfs2/mdt.c
index 9cb83189911..156bf6091a9 100644
--- a/fs/nilfs2/mdt.c
+++ b/fs/nilfs2/mdt.c
@@ -136,7 +136,7 @@ nilfs_mdt_submit_block(struct inode *inode, unsigned long blkoff,
int mode, struct buffer_head **out_bh)
{
struct buffer_head *bh;
- unsigned long blknum = 0;
+ __u64 blknum = 0;
int ret = -ENOMEM;
bh = nilfs_grab_buffer(inode, inode->i_mapping, blkoff, 0);
@@ -166,7 +166,7 @@ nilfs_mdt_submit_block(struct inode *inode, unsigned long blkoff,
goto failed_bh;
}
bh->b_bdev = NILFS_MDT(inode)->mi_nilfs->ns_bdev;
- bh->b_blocknr = blknum;
+ bh->b_blocknr = (sector_t)blknum;
set_buffer_mapped(bh);
bh->b_end_io = end_buffer_read_sync;