nilfs2: move get block functions in bmap.c into btree codes

Two get block function for btree nodes, nilfs_bmap_get_block() and
nilfs_bmap_get_new_block(), are called only from the btree codes.
This relocation will increase opportunities of compiler optimization.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>

diff --git a/fs/nilfs2/bmap.c b/fs/nilfs2/bmap.c
index d7dbedf..cf5c5d2 100644 (file)
--- a/fs/nilfs2/bmap.c
+++ b/fs/nilfs2/bmap.c
@@ -417,26 +417,6 @@ void nilfs_bmap_sub_blocks(const struct nilfs_bmap *bmap, int n)
                mark_inode_dirty(bmap->b_inode);
 }
 
-int nilfs_bmap_get_block(const struct nilfs_bmap *bmap, __u64 ptr,
-                        struct buffer_head **bhp)
-{
-       return nilfs_btnode_get(&NILFS_BMAP_I(bmap)->i_btnode_cache,
-                               ptr, 0, bhp, 0);
-}
-
-int nilfs_bmap_get_new_block(const struct nilfs_bmap *bmap, __u64 ptr,
-                            struct buffer_head **bhp)
-{
-       int ret;
-
-       ret = nilfs_btnode_get(&NILFS_BMAP_I(bmap)->i_btnode_cache,
-                              ptr, 0, bhp, 1);
-       if (ret < 0)
-               return ret;
-       set_buffer_nilfs_volatile(*bhp);
-       return 0;
-}
-
 __u64 nilfs_bmap_data_get_key(const struct nilfs_bmap *bmap,
                              const struct buffer_head *bh)
 {

diff --git a/fs/nilfs2/bmap.h b/fs/nilfs2/bmap.h
index 0af3190..978073b 100644 (file)
--- a/fs/nilfs2/bmap.h
+++ b/fs/nilfs2/bmap.h
@@ -202,12 +202,6 @@ void nilfs_bmap_add_blocks(const struct nilfs_bmap *, int);
 void nilfs_bmap_sub_blocks(const struct nilfs_bmap *, int);
 
 
-int nilfs_bmap_get_block(const struct nilfs_bmap *, __u64,
-                        struct buffer_head **);
-int nilfs_bmap_get_new_block(const struct nilfs_bmap *, __u64,
-                            struct buffer_head **);
-
-
 /* Assume that bmap semaphore is locked. */
 static inline int nilfs_bmap_dirty(const struct nilfs_bmap *bmap)
 {

diff --git a/fs/nilfs2/btree.c b/fs/nilfs2/btree.c
index 61e70d7..63ee350 100644 (file)
--- a/fs/nilfs2/btree.c
+++ b/fs/nilfs2/btree.c
@@ -122,10 +122,29 @@ static void nilfs_btree_clear_path(const struct nilfs_btree *btree,
        }
 }
 
-
 /*
  * B-tree node operations
  */
+static int nilfs_btree_get_block(const struct nilfs_btree *btree, __u64 ptr,
+                                struct buffer_head **bhp)
+{
+       struct address_space *btnc =
+               &NILFS_BMAP_I((struct nilfs_bmap *)btree)->i_btnode_cache;
+       return nilfs_btnode_get(btnc, ptr, 0, bhp, 0);
+}
+
+static int nilfs_btree_get_new_block(const struct nilfs_btree *btree,
+                                    __u64 ptr, struct buffer_head **bhp)
+{
+       struct address_space *btnc =
+               &NILFS_BMAP_I((struct nilfs_bmap *)btree)->i_btnode_cache;
+       int ret;
+
+       ret = nilfs_btnode_get(btnc, ptr, 0, bhp, 1);
+       if (!ret)
+               set_buffer_nilfs_volatile(*bhp);
+       return ret;
+}
 
 static inline int
 nilfs_btree_node_get_flags(const struct nilfs_btree *btree,
@@ -487,8 +506,7 @@ static int nilfs_btree_do_lookup(const struct nilfs_btree *btree,
        path[level].bp_index = index;
 
        for (level--; level >= minlevel; level--) {
-               ret = nilfs_bmap_get_block(&btree->bt_bmap, ptr,
-                                          &path[level].bp_bh);
+               ret = nilfs_btree_get_block(btree, ptr, &path[level].bp_bh);
                if (ret < 0)
                        return ret;
                node = nilfs_btree_get_nonroot_node(btree, path, level);
@@ -534,8 +552,7 @@ static int nilfs_btree_do_lookup_last(const struct nilfs_btree *btree,
        path[level].bp_index = index;
 
        for (level--; level > 0; level--) {
-               ret = nilfs_bmap_get_block(&btree->bt_bmap, ptr,
-                                          &path[level].bp_bh);
+               ret = nilfs_btree_get_block(btree, ptr, &path[level].bp_bh);
                if (ret < 0)
                        return ret;
                node = nilfs_btree_get_nonroot_node(btree, path, level);
@@ -923,8 +940,7 @@ static int nilfs_btree_prepare_insert(struct nilfs_btree *btree,
                if (pindex > 0) {
                        sibptr = nilfs_btree_node_get_ptr(btree, parent,
                                                          pindex - 1);
-                       ret = nilfs_bmap_get_block(&btree->bt_bmap, sibptr,
-                                                  &bh);
+                       ret = nilfs_btree_get_block(btree, sibptr, &bh);
                        if (ret < 0)
                                goto err_out_child_node;
                        sib = (struct nilfs_btree_node *)bh->b_data;
@@ -943,8 +959,7 @@ static int nilfs_btree_prepare_insert(struct nilfs_btree *btree,
                    nilfs_btree_node_get_nchildren(btree, parent) - 1) {
                        sibptr = nilfs_btree_node_get_ptr(btree, parent,
                                                          pindex + 1);
-                       ret = nilfs_bmap_get_block(&btree->bt_bmap, sibptr,
-                                                  &bh);
+                       ret = nilfs_btree_get_block(btree, sibptr, &bh);
                        if (ret < 0)
                                goto err_out_child_node;
                        sib = (struct nilfs_btree_node *)bh->b_data;
@@ -965,9 +980,9 @@ static int nilfs_btree_prepare_insert(struct nilfs_btree *btree,
                        &btree->bt_bmap, &path[level].bp_newreq);
                if (ret < 0)
                        goto err_out_child_node;
-               ret = nilfs_bmap_get_new_block(&btree->bt_bmap,
-                                              path[level].bp_newreq.bpr_ptr,
-                                              &bh);
+               ret = nilfs_btree_get_new_block(btree,
+                                               path[level].bp_newreq.bpr_ptr,
+                                               &bh);
                if (ret < 0)
                        goto err_out_curr_node;
 
@@ -997,8 +1012,8 @@ static int nilfs_btree_prepare_insert(struct nilfs_btree *btree,
                &btree->bt_bmap, &path[level].bp_newreq);
        if (ret < 0)
                goto err_out_child_node;
-       ret = nilfs_bmap_get_new_block(&btree->bt_bmap,
-                                      path[level].bp_newreq.bpr_ptr, &bh);
+       ret = nilfs_btree_get_new_block(btree, path[level].bp_newreq.bpr_ptr,
+                                       &bh);
        if (ret < 0)
                goto err_out_curr_node;
 
@@ -1320,8 +1335,7 @@ static int nilfs_btree_prepare_delete(struct nilfs_btree *btree,
                        /* left sibling */
                        sibptr = nilfs_btree_node_get_ptr(btree, parent,
                                                          pindex - 1);
-                       ret = nilfs_bmap_get_block(&btree->bt_bmap, sibptr,
-                                                  &bh);
+                       ret = nilfs_btree_get_block(btree, sibptr, &bh);
                        if (ret < 0)
                                goto err_out_curr_node;
                        sib = (struct nilfs_btree_node *)bh->b_data;
@@ -1342,8 +1356,7 @@ static int nilfs_btree_prepare_delete(struct nilfs_btree *btree,
                        /* right sibling */
                        sibptr = nilfs_btree_node_get_ptr(btree, parent,
                                                          pindex + 1);
-                       ret = nilfs_bmap_get_block(&btree->bt_bmap, sibptr,
-                                                  &bh);
+                       ret = nilfs_btree_get_block(btree, sibptr, &bh);
                        if (ret < 0)
                                goto err_out_curr_node;
                        sib = (struct nilfs_btree_node *)bh->b_data;
@@ -1500,7 +1513,7 @@ static int nilfs_btree_check_delete(struct nilfs_bmap *bmap, __u64 key)
                if (nchildren > 1)
                        return 0;
                ptr = nilfs_btree_node_get_ptr(btree, root, nchildren - 1);
-               ret = nilfs_bmap_get_block(bmap, ptr, &bh);
+               ret = nilfs_btree_get_block(btree, ptr, &bh);
                if (ret < 0)
                        return ret;
                node = (struct nilfs_btree_node *)bh->b_data;
@@ -1541,7 +1554,7 @@ static int nilfs_btree_gather_data(struct nilfs_bmap *bmap,
                nchildren = nilfs_btree_node_get_nchildren(btree, root);
                WARN_ON(nchildren > 1);
                ptr = nilfs_btree_node_get_ptr(btree, root, nchildren - 1);
-               ret = nilfs_bmap_get_block(bmap, ptr, &bh);
+               ret = nilfs_btree_get_block(btree, ptr, &bh);
                if (ret < 0)
                        return ret;
                node = (struct nilfs_btree_node *)bh->b_data;
@@ -1598,7 +1611,7 @@ nilfs_btree_prepare_convert_and_insert(struct nilfs_bmap *bmap, __u64 key,
                if (ret < 0)
                        goto err_out_dreq;
 
-               ret = nilfs_bmap_get_new_block(bmap, nreq->bpr_ptr, &bh);
+               ret = nilfs_btree_get_new_block(btree, nreq->bpr_ptr, &bh);
                if (ret < 0)
                        goto err_out_nreq;
 
@@ -2167,7 +2180,7 @@ static int nilfs_btree_mark(struct nilfs_bmap *bmap, __u64 key, int level)
                WARN_ON(ret == -ENOENT);
                goto out;
        }
-       ret = nilfs_bmap_get_block(&btree->bt_bmap, ptr, &bh);
+       ret = nilfs_btree_get_block(btree, ptr, &bh);
        if (ret < 0) {
                WARN_ON(ret == -ENOENT);
                goto out;