btrfs: make static code static & remove dead code
Big patch, but all it does is add statics to functions which
are in fact static, then remove the associated dead-code fallout.
removed functions:
btrfs_iref_to_path()
__btrfs_lookup_delayed_deletion_item()
__btrfs_search_delayed_insertion_item()
__btrfs_search_delayed_deletion_item()
find_eb_for_page()
btrfs_find_block_group()
range_straddles_pages()
extent_range_uptodate()
btrfs_file_extent_length()
btrfs_scrub_cancel_devid()
btrfs_start_transaction_lflush()
btrfs_print_tree() is left because it is used for debugging.
btrfs_start_transaction_lflush() and btrfs_reada_detach() are
left for symmetry.
ulist.c functions are left, another patch will take care of those.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index f651a37..ac132d9 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -70,6 +70,8 @@
int mark);
static int btrfs_destroy_pinned_extent(struct btrfs_root *root,
struct extent_io_tree *pinned_extents);
+static int btrfs_cleanup_transaction(struct btrfs_root *root);
+static void btrfs_error_commit_super(struct btrfs_root *root);
/*
* end_io_wq structs are used to do processing in task context when an IO is
@@ -531,41 +533,6 @@
return 0;
}
-struct extent_buffer *find_eb_for_page(struct extent_io_tree *tree,
- struct page *page, int max_walk)
-{
- struct extent_buffer *eb;
- u64 start = page_offset(page);
- u64 target = start;
- u64 min_start;
-
- if (start < max_walk)
- min_start = 0;
- else
- min_start = start - max_walk;
-
- while (start >= min_start) {
- eb = find_extent_buffer(tree, start, 0);
- if (eb) {
- /*
- * we found an extent buffer and it contains our page
- * horray!
- */
- if (eb->start <= target &&
- eb->start + eb->len > target)
- return eb;
-
- /* we found an extent buffer that wasn't for us */
- free_extent_buffer(eb);
- return NULL;
- }
- if (start == 0)
- break;
- start -= PAGE_CACHE_SIZE;
- }
- return NULL;
-}
-
static int btree_readpage_end_io_hook(struct page *page, u64 start, u64 end,
struct extent_state *state, int mirror)
{
@@ -3245,7 +3212,7 @@
return num_tolerated_disk_barrier_failures;
}
-int write_all_supers(struct btrfs_root *root, int max_mirrors)
+static int write_all_supers(struct btrfs_root *root, int max_mirrors)
{
struct list_head *head;
struct btrfs_device *dev;
@@ -3611,7 +3578,7 @@
return 0;
}
-void btrfs_error_commit_super(struct btrfs_root *root)
+static void btrfs_error_commit_super(struct btrfs_root *root)
{
mutex_lock(&root->fs_info->cleaner_mutex);
btrfs_run_delayed_iputs(root);
@@ -3879,7 +3846,7 @@
*/
}
-int btrfs_cleanup_transaction(struct btrfs_root *root)
+static int btrfs_cleanup_transaction(struct btrfs_root *root)
{
struct btrfs_transaction *t;
LIST_HEAD(list);