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Btrfs: Use writepages for the metadata too 

Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason 2007-11-07 21:08:01 -05:00
parent 008630c17c
commit 0da5468f47
1 changed files with 26 additions and 3 deletions
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29
fs/btrfs/disk-io.c
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@ -43,6 +43,8 @@ static int check_tree_block(struct btrfs_root *root, struct extent_buffer *buf)
}
#endif
static struct extent_map_ops btree_extent_map_ops;
struct extent_buffer *btrfs_find_tree_block(struct btrfs_root *root,
u64 bytenr, u32 blocksize)
{
@ -188,15 +190,29 @@ out:
return 0;
}
static int btree_writepage_io_hook(struct page *page, u64 start, u64 end)
{
struct btrfs_root *root = BTRFS_I(page->mapping->host)->root;
csum_dirty_buffer(root, page);
return 0;
}
static int btree_writepage(struct page *page, struct writeback_control *wbc)
{
struct extent_map_tree *tree;
struct btrfs_root *root = BTRFS_I(page->mapping->host)->root;
tree = &BTRFS_I(page->mapping->host)->extent_tree;
csum_dirty_buffer(root, page);
return extent_write_full_page(tree, page, btree_get_extent, wbc);
}
static int btree_writepages(struct address_space *mapping,
struct writeback_control *wbc)
{
struct extent_map_tree *tree;
tree = &BTRFS_I(mapping->host)->extent_tree;
return extent_writepages(tree, mapping, btree_get_extent, wbc);
}
int btree_readpage(struct file *file, struct page *page)
{
struct extent_map_tree *tree;
@ -251,6 +267,7 @@ static int btree_writepage(struct page *page, struct writeback_control *wbc)
static struct address_space_operations btree_aops = {
.readpage = btree_readpage,
.writepage = btree_writepage,
.writepages = btree_writepages,
.releasepage = btree_releasepage,
.invalidatepage = btree_invalidatepage,
.sync_page = block_sync_page,
@ -538,6 +555,8 @@ struct btrfs_root *open_ctree(struct super_block *sb)
extent_map_tree_init(&BTRFS_I(fs_info->btree_inode)->extent_tree,
fs_info->btree_inode->i_mapping,
GFP_NOFS);
BTRFS_I(fs_info->btree_inode)->extent_tree.ops = &btree_extent_map_ops;
extent_map_tree_init(&fs_info->free_space_cache,
fs_info->btree_inode->i_mapping, GFP_NOFS);
extent_map_tree_init(&fs_info->block_group_cache,
@ -832,3 +851,7 @@ int btrfs_read_buffer(struct extent_buffer *buf)
return read_extent_buffer_pages(&BTRFS_I(btree_inode)->extent_tree,
buf, 0, 1);
}
static struct extent_map_ops btree_extent_map_ops = {
.writepage_io_hook = btree_writepage_io_hook,
};