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-rw-r--r--fs/nilfs2/btree.c77
1 files changed, 46 insertions, 31 deletions
diff --git a/fs/nilfs2/btree.c b/fs/nilfs2/btree.c
index d451ae0e0bf..b2e3ff34762 100644
--- a/fs/nilfs2/btree.c
+++ b/fs/nilfs2/btree.c
@@ -714,7 +714,7 @@ static void nilfs_btree_promote_key(struct nilfs_bmap *btree,
nilfs_btree_get_nonroot_node(path, level),
path[level].bp_index, key);
if (!buffer_dirty(path[level].bp_bh))
- nilfs_btnode_mark_dirty(path[level].bp_bh);
+ mark_buffer_dirty(path[level].bp_bh);
} while ((path[level].bp_index == 0) &&
(++level < nilfs_btree_height(btree) - 1));
}
@@ -739,7 +739,7 @@ static void nilfs_btree_do_insert(struct nilfs_bmap *btree,
nilfs_btree_node_insert(node, path[level].bp_index,
*keyp, *ptrp, ncblk);
if (!buffer_dirty(path[level].bp_bh))
- nilfs_btnode_mark_dirty(path[level].bp_bh);
+ mark_buffer_dirty(path[level].bp_bh);
if (path[level].bp_index == 0)
nilfs_btree_promote_key(btree, path, level + 1,
@@ -777,9 +777,9 @@ static void nilfs_btree_carry_left(struct nilfs_bmap *btree,
nilfs_btree_node_move_left(left, node, n, ncblk, ncblk);
if (!buffer_dirty(path[level].bp_bh))
- nilfs_btnode_mark_dirty(path[level].bp_bh);
+ mark_buffer_dirty(path[level].bp_bh);
if (!buffer_dirty(path[level].bp_sib_bh))
- nilfs_btnode_mark_dirty(path[level].bp_sib_bh);
+ mark_buffer_dirty(path[level].bp_sib_bh);
nilfs_btree_promote_key(btree, path, level + 1,
nilfs_btree_node_get_key(node, 0));
@@ -823,9 +823,9 @@ static void nilfs_btree_carry_right(struct nilfs_bmap *btree,
nilfs_btree_node_move_right(node, right, n, ncblk, ncblk);
if (!buffer_dirty(path[level].bp_bh))
- nilfs_btnode_mark_dirty(path[level].bp_bh);
+ mark_buffer_dirty(path[level].bp_bh);
if (!buffer_dirty(path[level].bp_sib_bh))
- nilfs_btnode_mark_dirty(path[level].bp_sib_bh);
+ mark_buffer_dirty(path[level].bp_sib_bh);
path[level + 1].bp_index++;
nilfs_btree_promote_key(btree, path, level + 1,
@@ -870,9 +870,9 @@ static void nilfs_btree_split(struct nilfs_bmap *btree,
nilfs_btree_node_move_right(node, right, n, ncblk, ncblk);
if (!buffer_dirty(path[level].bp_bh))
- nilfs_btnode_mark_dirty(path[level].bp_bh);
+ mark_buffer_dirty(path[level].bp_bh);
if (!buffer_dirty(path[level].bp_sib_bh))
- nilfs_btnode_mark_dirty(path[level].bp_sib_bh);
+ mark_buffer_dirty(path[level].bp_sib_bh);
newkey = nilfs_btree_node_get_key(right, 0);
newptr = path[level].bp_newreq.bpr_ptr;
@@ -919,7 +919,7 @@ static void nilfs_btree_grow(struct nilfs_bmap *btree,
nilfs_btree_node_set_level(root, level + 1);
if (!buffer_dirty(path[level].bp_sib_bh))
- nilfs_btnode_mark_dirty(path[level].bp_sib_bh);
+ mark_buffer_dirty(path[level].bp_sib_bh);
path[level].bp_bh = path[level].bp_sib_bh;
path[level].bp_sib_bh = NULL;
@@ -1194,7 +1194,7 @@ static void nilfs_btree_do_delete(struct nilfs_bmap *btree,
nilfs_btree_node_delete(node, path[level].bp_index,
keyp, ptrp, ncblk);
if (!buffer_dirty(path[level].bp_bh))
- nilfs_btnode_mark_dirty(path[level].bp_bh);
+ mark_buffer_dirty(path[level].bp_bh);
if (path[level].bp_index == 0)
nilfs_btree_promote_key(btree, path, level + 1,
nilfs_btree_node_get_key(node, 0));
@@ -1226,9 +1226,9 @@ static void nilfs_btree_borrow_left(struct nilfs_bmap *btree,
nilfs_btree_node_move_right(left, node, n, ncblk, ncblk);
if (!buffer_dirty(path[level].bp_bh))
- nilfs_btnode_mark_dirty(path[level].bp_bh);
+ mark_buffer_dirty(path[level].bp_bh);
if (!buffer_dirty(path[level].bp_sib_bh))
- nilfs_btnode_mark_dirty(path[level].bp_sib_bh);
+ mark_buffer_dirty(path[level].bp_sib_bh);
nilfs_btree_promote_key(btree, path, level + 1,
nilfs_btree_node_get_key(node, 0));
@@ -1258,9 +1258,9 @@ static void nilfs_btree_borrow_right(struct nilfs_bmap *btree,
nilfs_btree_node_move_left(node, right, n, ncblk, ncblk);
if (!buffer_dirty(path[level].bp_bh))
- nilfs_btnode_mark_dirty(path[level].bp_bh);
+ mark_buffer_dirty(path[level].bp_bh);
if (!buffer_dirty(path[level].bp_sib_bh))
- nilfs_btnode_mark_dirty(path[level].bp_sib_bh);
+ mark_buffer_dirty(path[level].bp_sib_bh);
path[level + 1].bp_index++;
nilfs_btree_promote_key(btree, path, level + 1,
@@ -1289,7 +1289,7 @@ static void nilfs_btree_concat_left(struct nilfs_bmap *btree,
nilfs_btree_node_move_left(left, node, n, ncblk, ncblk);
if (!buffer_dirty(path[level].bp_sib_bh))
- nilfs_btnode_mark_dirty(path[level].bp_sib_bh);
+ mark_buffer_dirty(path[level].bp_sib_bh);
nilfs_btnode_delete(path[level].bp_bh);
path[level].bp_bh = path[level].bp_sib_bh;
@@ -1315,7 +1315,7 @@ static void nilfs_btree_concat_right(struct nilfs_bmap *btree,
nilfs_btree_node_move_left(node, right, n, ncblk, ncblk);
if (!buffer_dirty(path[level].bp_bh))
- nilfs_btnode_mark_dirty(path[level].bp_bh);
+ mark_buffer_dirty(path[level].bp_bh);
nilfs_btnode_delete(path[level].bp_sib_bh);
path[level].bp_sib_bh = NULL;
@@ -1346,6 +1346,11 @@ static void nilfs_btree_shrink(struct nilfs_bmap *btree,
path[level].bp_bh = NULL;
}
+static void nilfs_btree_nop(struct nilfs_bmap *btree,
+ struct nilfs_btree_path *path,
+ int level, __u64 *keyp, __u64 *ptrp)
+{
+}
static int nilfs_btree_prepare_delete(struct nilfs_bmap *btree,
struct nilfs_btree_path *path,
@@ -1356,20 +1361,19 @@ static int nilfs_btree_prepare_delete(struct nilfs_bmap *btree,
struct buffer_head *bh;
struct nilfs_btree_node *node, *parent, *sib;
__u64 sibptr;
- int pindex, level, ncmin, ncmax, ncblk, ret;
+ int pindex, dindex, level, ncmin, ncmax, ncblk, ret;
ret = 0;
stats->bs_nblocks = 0;
ncmin = NILFS_BTREE_NODE_NCHILDREN_MIN(nilfs_btree_node_size(btree));
ncblk = nilfs_btree_nchildren_per_block(btree);
- for (level = NILFS_BTREE_LEVEL_NODE_MIN;
+ for (level = NILFS_BTREE_LEVEL_NODE_MIN, dindex = path[level].bp_index;
level < nilfs_btree_height(btree) - 1;
level++) {
node = nilfs_btree_get_nonroot_node(path, level);
path[level].bp_oldreq.bpr_ptr =
- nilfs_btree_node_get_ptr(node, path[level].bp_index,
- ncblk);
+ nilfs_btree_node_get_ptr(node, dindex, ncblk);
ret = nilfs_bmap_prepare_end_ptr(btree,
&path[level].bp_oldreq, dat);
if (ret < 0)
@@ -1383,6 +1387,7 @@ static int nilfs_btree_prepare_delete(struct nilfs_bmap *btree,
parent = nilfs_btree_get_node(btree, path, level + 1, &ncmax);
pindex = path[level + 1].bp_index;
+ dindex = pindex;
if (pindex > 0) {
/* left sibling */
@@ -1421,6 +1426,14 @@ static int nilfs_btree_prepare_delete(struct nilfs_bmap *btree,
path[level].bp_sib_bh = bh;
path[level].bp_op = nilfs_btree_concat_right;
stats->bs_nblocks++;
+ /*
+ * When merging right sibling node
+ * into the current node, pointer to
+ * the right sibling node must be
+ * terminated instead. The adjustment
+ * below is required for that.
+ */
+ dindex = pindex + 1;
/* continue; */
}
} else {
@@ -1431,29 +1444,31 @@ static int nilfs_btree_prepare_delete(struct nilfs_bmap *btree,
NILFS_BTREE_ROOT_NCHILDREN_MAX) {
path[level].bp_op = nilfs_btree_shrink;
stats->bs_nblocks += 2;
+ level++;
+ path[level].bp_op = nilfs_btree_nop;
+ goto shrink_root_child;
} else {
path[level].bp_op = nilfs_btree_do_delete;
stats->bs_nblocks++;
+ goto out;
}
-
- goto out;
-
}
}
+ /* child of the root node is deleted */
+ path[level].bp_op = nilfs_btree_do_delete;
+ stats->bs_nblocks++;
+
+shrink_root_child:
node = nilfs_btree_get_root(btree);
path[level].bp_oldreq.bpr_ptr =
- nilfs_btree_node_get_ptr(node, path[level].bp_index,
+ nilfs_btree_node_get_ptr(node, dindex,
NILFS_BTREE_ROOT_NCHILDREN_MAX);
ret = nilfs_bmap_prepare_end_ptr(btree, &path[level].bp_oldreq, dat);
if (ret < 0)
goto err_out_child_node;
- /* child of the root node is deleted */
- path[level].bp_op = nilfs_btree_do_delete;
- stats->bs_nblocks++;
-
/* success */
out:
*levelp = level;
@@ -1709,7 +1724,7 @@ nilfs_btree_commit_convert_and_insert(struct nilfs_bmap *btree,
nilfs_btree_node_init(node, 0, 1, n, ncblk, keys, ptrs);
nilfs_btree_node_insert(node, n, key, dreq->bpr_ptr, ncblk);
if (!buffer_dirty(bh))
- nilfs_btnode_mark_dirty(bh);
+ mark_buffer_dirty(bh);
if (!nilfs_bmap_dirty(btree))
nilfs_bmap_set_dirty(btree);
@@ -1787,7 +1802,7 @@ static int nilfs_btree_propagate_p(struct nilfs_bmap *btree,
{
while ((++level < nilfs_btree_height(btree) - 1) &&
!buffer_dirty(path[level].bp_bh))
- nilfs_btnode_mark_dirty(path[level].bp_bh);
+ mark_buffer_dirty(path[level].bp_bh);
return 0;
}
@@ -2229,7 +2244,7 @@ static int nilfs_btree_mark(struct nilfs_bmap *btree, __u64 key, int level)
}
if (!buffer_dirty(bh))
- nilfs_btnode_mark_dirty(bh);
+ mark_buffer_dirty(bh);
brelse(bh);
if (!nilfs_bmap_dirty(btree))
nilfs_bmap_set_dirty(btree);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-23 11:09:29 +0000