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Btrfs: Allow tree blocks larger than the page size

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Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason 2007-10-15 16:15:53 -04:00
parent 1a5bc167f6
commit db94535db7
15 changed files with 738 additions and 497 deletions
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18
fs/btrfs/tree-defrag.c
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@ -27,13 +27,15 @@ static void reada_defrag(struct btrfs_root *root,
{
int i;
u32 nritems;
u64 blocknr;
u64 bytenr;
u32 blocksize;
int ret;
blocksize = btrfs_level_size(root, btrfs_header_level(node) - 1);
nritems = btrfs_header_nritems(node);
for (i = 0; i < nritems; i++) {
blocknr = btrfs_node_blockptr(node, i);
ret = readahead_tree_block(root, blocknr);
bytenr = btrfs_node_blockptr(node, i);
ret = readahead_tree_block(root, bytenr, blocksize);
if (ret)
break;
}
@ -46,7 +48,7 @@ static int defrag_walk_down(struct btrfs_trans_handle *trans,
{
struct extent_buffer *next;
struct extent_buffer *cur;
u64 blocknr;
u64 bytenr;
int ret = 0;
int is_extent = 0;
@ -80,10 +82,11 @@ static int defrag_walk_down(struct btrfs_trans_handle *trans,
break;
}
blocknr = btrfs_node_blockptr(cur, path->slots[*level]);
bytenr = btrfs_node_blockptr(cur, path->slots[*level]);
if (cache_only) {
next = btrfs_find_tree_block(root, blocknr);
next = btrfs_find_tree_block(root, bytenr,
btrfs_level_size(root, *level - 1));
/* FIXME, test for defrag */
if (!next || !btrfs_buffer_uptodate(next)) {
free_extent_buffer(next);
@ -91,7 +94,8 @@ static int defrag_walk_down(struct btrfs_trans_handle *trans,
continue;
}
} else {
next = read_tree_block(root, blocknr);
next = read_tree_block(root, bytenr,
btrfs_level_size(root, *level - 1));
}
ret = btrfs_cow_block(trans, root, next, path->nodes[*level],
path->slots[*level], &next);