Commit 0f3fe33b authored by Ryusuke Konishi's avatar Ryusuke Konishi

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: default avatarRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
parent 2e0c2c73
...@@ -36,6 +36,26 @@ struct inode *nilfs_bmap_get_dat(const struct nilfs_bmap *bmap) ...@@ -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)); 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, int nilfs_bmap_lookup_at_level(struct nilfs_bmap *bmap, __u64 key, int level,
__u64 *ptrp) __u64 *ptrp)
{ {
...@@ -69,39 +89,6 @@ int nilfs_bmap_lookup_contig(struct nilfs_bmap *bmap, __u64 key, __u64 *ptrp, ...@@ -69,39 +89,6 @@ int nilfs_bmap_lookup_contig(struct nilfs_bmap *bmap, __u64 key, __u64 *ptrp,
return ret; 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) static int nilfs_bmap_do_insert(struct nilfs_bmap *bmap, __u64 key, __u64 ptr)
{ {
__u64 keys[NILFS_BMAP_SMALL_HIGH + 1]; __u64 keys[NILFS_BMAP_SMALL_HIGH + 1];
......
...@@ -142,7 +142,6 @@ struct nilfs_bmap { ...@@ -142,7 +142,6 @@ struct nilfs_bmap {
int nilfs_bmap_test_and_clear_dirty(struct nilfs_bmap *); int nilfs_bmap_test_and_clear_dirty(struct nilfs_bmap *);
int nilfs_bmap_read(struct nilfs_bmap *, struct nilfs_inode *); int nilfs_bmap_read(struct nilfs_bmap *, struct nilfs_inode *);
void nilfs_bmap_write(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_lookup_contig(struct nilfs_bmap *, __u64, __u64 *, unsigned);
int nilfs_bmap_insert(struct nilfs_bmap *, unsigned long, unsigned long); int nilfs_bmap_insert(struct nilfs_bmap *, unsigned long, unsigned long);
int nilfs_bmap_delete(struct nilfs_bmap *, 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 *); ...@@ -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 *); 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 * Internal use only
*/ */
......
...@@ -136,7 +136,7 @@ nilfs_mdt_submit_block(struct inode *inode, unsigned long blkoff, ...@@ -136,7 +136,7 @@ nilfs_mdt_submit_block(struct inode *inode, unsigned long blkoff,
int mode, struct buffer_head **out_bh) int mode, struct buffer_head **out_bh)
{ {
struct buffer_head *bh; struct buffer_head *bh;
unsigned long blknum = 0; __u64 blknum = 0;
int ret = -ENOMEM; int ret = -ENOMEM;
bh = nilfs_grab_buffer(inode, inode->i_mapping, blkoff, 0); bh = nilfs_grab_buffer(inode, inode->i_mapping, blkoff, 0);
...@@ -166,7 +166,7 @@ nilfs_mdt_submit_block(struct inode *inode, unsigned long blkoff, ...@@ -166,7 +166,7 @@ nilfs_mdt_submit_block(struct inode *inode, unsigned long blkoff,
goto failed_bh; goto failed_bh;
} }
bh->b_bdev = NILFS_MDT(inode)->mi_nilfs->ns_bdev; bh->b_bdev = NILFS_MDT(inode)->mi_nilfs->ns_bdev;
bh->b_blocknr = blknum; bh->b_blocknr = (sector_t)blknum;
set_buffer_mapped(bh); set_buffer_mapped(bh);
bh->b_end_io = end_buffer_read_sync; bh->b_end_io = end_buffer_read_sync;
......
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