Btrfs: remove #if 0 code
Btrfs had some old code sitting around under #if 0, this drops it.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 44c94d8..77f9a3b 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -584,18 +584,7 @@
btrfs_set_work_high_prio(&async->work);
btrfs_queue_worker(&fs_info->workers, &async->work);
-#if 0
- int limit = btrfs_async_submit_limit(fs_info);
- if (atomic_read(&fs_info->nr_async_submits) > limit) {
- wait_event_timeout(fs_info->async_submit_wait,
- (atomic_read(&fs_info->nr_async_submits) < limit),
- HZ/10);
- wait_event_timeout(fs_info->async_submit_wait,
- (atomic_read(&fs_info->nr_async_bios) < limit),
- HZ/10);
- }
-#endif
while (atomic_read(&fs_info->async_submit_draining) &&
atomic_read(&fs_info->nr_async_submits)) {
wait_event(fs_info->async_submit_wait,
@@ -770,27 +759,6 @@
}
}
-#if 0
-static int btree_writepage(struct page *page, struct writeback_control *wbc)
-{
- struct buffer_head *bh;
- struct btrfs_root *root = BTRFS_I(page->mapping->host)->root;
- struct buffer_head *head;
- if (!page_has_buffers(page)) {
- create_empty_buffers(page, root->fs_info->sb->s_blocksize,
- (1 << BH_Dirty)|(1 << BH_Uptodate));
- }
- head = page_buffers(page);
- bh = head;
- do {
- if (buffer_dirty(bh))
- csum_tree_block(root, bh, 0);
- bh = bh->b_this_page;
- } while (bh != head);
- return block_write_full_page(page, btree_get_block, wbc);
-}
-#endif
-
static struct address_space_operations btree_aops = {
.readpage = btree_readpage,
.writepage = btree_writepage,
@@ -1278,11 +1246,7 @@
int ret = 0;
struct btrfs_device *device;
struct backing_dev_info *bdi;
-#if 0
- if ((bdi_bits & (1 << BDI_write_congested)) &&
- btrfs_congested_async(info, 0))
- return 1;
-#endif
+
list_for_each_entry(device, &info->fs_devices->devices, dev_list) {
if (!device->bdev)
continue;
@@ -2334,16 +2298,6 @@
btrfs_stop_workers(&fs_info->endio_write_workers);
btrfs_stop_workers(&fs_info->submit_workers);
-#if 0
- while (!list_empty(&fs_info->hashers)) {
- struct btrfs_hasher *hasher;
- hasher = list_entry(fs_info->hashers.next, struct btrfs_hasher,
- hashers);
- list_del(&hasher->hashers);
- crypto_free_hash(&fs_info->hash_tfm);
- kfree(hasher);
- }
-#endif
btrfs_close_devices(fs_info->fs_devices);
btrfs_mapping_tree_free(&fs_info->mapping_tree);