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Btrfs: Add back the online defragging code

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Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason
2007-10-15 16:17:34 -04:00
parent 09e71a3263
commit 6b80053d02
7 changed files with 166 additions and 106 deletions
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60
fs/btrfs/disk-io.c
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@@ -678,3 +678,63 @@ void btrfs_btree_balance_dirty(struct btrfs_root *root, unsigned long nr)
balance_dirty_pages_ratelimited_nr(
root->fs_info->btree_inode->i_mapping, nr);
}
void btrfs_set_buffer_defrag(struct extent_buffer *buf)
{
struct btrfs_root *root = BTRFS_I(buf->pages[0]->mapping->host)->root;
struct inode *btree_inode = root->fs_info->btree_inode;
set_extent_bits(&BTRFS_I(btree_inode)->extent_tree, buf->start,
buf->start + buf->len - 1, EXTENT_DEFRAG, GFP_NOFS);
}
void btrfs_set_buffer_defrag_done(struct extent_buffer *buf)
{
struct btrfs_root *root = BTRFS_I(buf->pages[0]->mapping->host)->root;
struct inode *btree_inode = root->fs_info->btree_inode;
set_extent_bits(&BTRFS_I(btree_inode)->extent_tree, buf->start,
buf->start + buf->len - 1, EXTENT_DEFRAG_DONE,
GFP_NOFS);
}
int btrfs_buffer_defrag(struct extent_buffer *buf)
{
struct btrfs_root *root = BTRFS_I(buf->pages[0]->mapping->host)->root;
struct inode *btree_inode = root->fs_info->btree_inode;
return test_range_bit(&BTRFS_I(btree_inode)->extent_tree,
buf->start, buf->start + buf->len - 1, EXTENT_DEFRAG, 0);
}
int btrfs_buffer_defrag_done(struct extent_buffer *buf)
{
struct btrfs_root *root = BTRFS_I(buf->pages[0]->mapping->host)->root;
struct inode *btree_inode = root->fs_info->btree_inode;
return test_range_bit(&BTRFS_I(btree_inode)->extent_tree,
buf->start, buf->start + buf->len - 1,
EXTENT_DEFRAG_DONE, 0);
}
int btrfs_clear_buffer_defrag_done(struct extent_buffer *buf)
{
struct btrfs_root *root = BTRFS_I(buf->pages[0]->mapping->host)->root;
struct inode *btree_inode = root->fs_info->btree_inode;
return clear_extent_bits(&BTRFS_I(btree_inode)->extent_tree,
buf->start, buf->start + buf->len - 1,
EXTENT_DEFRAG_DONE, GFP_NOFS);
}
int btrfs_clear_buffer_defrag(struct extent_buffer *buf)
{
struct btrfs_root *root = BTRFS_I(buf->pages[0]->mapping->host)->root;
struct inode *btree_inode = root->fs_info->btree_inode;
return clear_extent_bits(&BTRFS_I(btree_inode)->extent_tree,
buf->start, buf->start + buf->len - 1,
EXTENT_DEFRAG, GFP_NOFS);
}
int btrfs_read_buffer(struct extent_buffer *buf)
{
struct btrfs_root *root = BTRFS_I(buf->pages[0]->mapping->host)->root;
struct inode *btree_inode = root->fs_info->btree_inode;
return read_extent_buffer_pages(&BTRFS_I(btree_inode)->extent_tree,
buf, 1);
}