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Commit 71db2a77 authored by Valentina Giusti's avatar Valentina Giusti Committed by Chris Mason
Browse files

btrfs: remove unused variables from disk-io.c 



Remove unused variables:
* tree from csum_dirty_buffer,
* tree from btree_readpage_end_io_hook,
* tree from btree_writepages,
* bytenr from btrfs_create_tree,
* fs_info from end_workqueue_fn.

Signed-off-by: default avatarValentina Giusti <valentina.giusti@microon.de>
Signed-off-by: default avatarJosef Bacik <jbacik@fusionio.com>
Signed-off-by: default avatarChris Mason <clm@fb.com>
parent 99e22f78

fs/btrfs/disk-io.c

+0 −11
Original line number Diff line number Diff line
@@ -465,13 +465,10 @@ static int btree_read_extent_buffer_pages(struct btrfs_root *root, 


static int csum_dirty_buffer(struct btrfs_root *root, struct page *page)

{

	struct extent_io_tree *tree;

	u64 start = page_offset(page);

	u64 found_start;

	struct extent_buffer *eb;



	tree = &BTRFS_I(page->mapping->host)->io_tree;



	eb = (struct extent_buffer *)page->private;

	if (page != eb->pages[0])

		return 0;
@@ -570,7 +567,6 @@ static int btree_readpage_end_io_hook(struct btrfs_io_bio *io_bio, 
				      u64 phy_offset, struct page *page,

				      u64 start, u64 end, int mirror)

{

	struct extent_io_tree *tree;

	u64 found_start;

	int found_level;

	struct extent_buffer *eb;
@@ -581,7 +577,6 @@ static int btree_readpage_end_io_hook(struct btrfs_io_bio *io_bio, 
	if (!page->private)

		goto out;



	tree = &BTRFS_I(page->mapping->host)->io_tree;

	eb = (struct extent_buffer *)page->private;



	/* the pending IO might have been the only thing that kept this buffer
@@ -968,11 +963,9 @@ static int btree_migratepage(struct address_space *mapping, 
static int btree_writepages(struct address_space *mapping,

			    struct writeback_control *wbc)

{

	struct extent_io_tree *tree;

	struct btrfs_fs_info *fs_info;

	int ret;



	tree = &BTRFS_I(mapping->host)->io_tree;

	if (wbc->sync_mode == WB_SYNC_NONE) {



		if (wbc->for_kupdate)
@@ -1274,7 +1267,6 @@ struct btrfs_root *btrfs_create_tree(struct btrfs_trans_handle *trans, 
	struct btrfs_root *root;

	struct btrfs_key key;

	int ret = 0;

	u64 bytenr;

	uuid_le uuid;



	root = btrfs_alloc_root(fs_info);
@@ -1296,7 +1288,6 @@ struct btrfs_root *btrfs_create_tree(struct btrfs_trans_handle *trans, 
		goto fail;

	}



	bytenr = leaf->start;

	memset_extent_buffer(leaf, 0, 0, sizeof(struct btrfs_header));

	btrfs_set_header_bytenr(leaf, leaf->start);

	btrfs_set_header_generation(leaf, trans->transid);
@@ -1685,12 +1676,10 @@ static void end_workqueue_fn(struct btrfs_work *work) 
{

	struct bio *bio;

	struct end_io_wq *end_io_wq;

	struct btrfs_fs_info *fs_info;

	int error;



	end_io_wq = container_of(work, struct end_io_wq, work);

	bio = end_io_wq->bio;

	fs_info = end_io_wq->info;



	error = end_io_wq->error;

	bio->bi_private = end_io_wq->private;