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btrfs: remove unused variables from disk-io.c

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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: Valentina Giusti <valentina.giusti@microon.de>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <clm@fb.com>
This commit is contained in:
Valentina Giusti 2013-11-04 22:34:23 +01:00 • committed by Chris Mason
parent 99e22f783b
commit 71db2a7751
1 changed files with 0 additions and 11 deletions
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11
fs/btrfs/disk-io.c
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@ -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;