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/extent-tree.c b/fs/btrfs/extent-tree.c
index b0a3fab..039a771 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -105,6 +105,8 @@
u64 num_bytes, int reserve);
static int block_rsv_use_bytes(struct btrfs_block_rsv *block_rsv,
u64 num_bytes);
+int btrfs_pin_extent(struct btrfs_root *root,
+ u64 bytenr, u64 num_bytes, int reserved);
static noinline int
block_group_cache_done(struct btrfs_block_group_cache *cache)
@@ -684,55 +686,6 @@
rcu_read_unlock();
}
-u64 btrfs_find_block_group(struct btrfs_root *root,
- u64 search_start, u64 search_hint, int owner)
-{
- struct btrfs_block_group_cache *cache;
- u64 used;
- u64 last = max(search_hint, search_start);
- u64 group_start = 0;
- int full_search = 0;
- int factor = 9;
- int wrapped = 0;
-again:
- while (1) {
- cache = btrfs_lookup_first_block_group(root->fs_info, last);
- if (!cache)
- break;
-
- spin_lock(&cache->lock);
- last = cache->key.objectid + cache->key.offset;
- used = btrfs_block_group_used(&cache->item);
-
- if ((full_search || !cache->ro) &&
- block_group_bits(cache, BTRFS_BLOCK_GROUP_METADATA)) {
- if (used + cache->pinned + cache->reserved <
- div_factor(cache->key.offset, factor)) {
- group_start = cache->key.objectid;
- spin_unlock(&cache->lock);
- btrfs_put_block_group(cache);
- goto found;
- }
- }
- spin_unlock(&cache->lock);
- btrfs_put_block_group(cache);
- cond_resched();
- }
- if (!wrapped) {
- last = search_start;
- wrapped = 1;
- goto again;
- }
- if (!full_search && factor < 10) {
- last = search_start;
- full_search = 1;
- factor = 10;
- goto again;
- }
-found:
- return group_start;
-}
-
/* simple helper to search for an existing extent at a given offset */
int btrfs_lookup_extent(struct btrfs_root *root, u64 start, u64 len)
{
@@ -3453,7 +3406,7 @@
* progress (either running or paused) picks the target profile (if it's
* already available), otherwise falls back to plain reducing.
*/
-u64 btrfs_reduce_alloc_profile(struct btrfs_root *root, u64 flags)
+static u64 btrfs_reduce_alloc_profile(struct btrfs_root *root, u64 flags)
{
/*
* we add in the count of missing devices because we want
@@ -3927,8 +3880,8 @@
return 0;
}
-void btrfs_writeback_inodes_sb_nr(struct btrfs_root *root,
- unsigned long nr_pages)
+static void btrfs_writeback_inodes_sb_nr(struct btrfs_root *root,
+ unsigned long nr_pages)
{
struct super_block *sb = root->fs_info->sb;
int started;
@@ -6652,10 +6605,9 @@
return ret;
}
-struct extent_buffer *btrfs_init_new_buffer(struct btrfs_trans_handle *trans,
- struct btrfs_root *root,
- u64 bytenr, u32 blocksize,
- int level)
+static struct extent_buffer *
+btrfs_init_new_buffer(struct btrfs_trans_handle *trans, struct btrfs_root *root,
+ u64 bytenr, u32 blocksize, int level)
{
struct extent_buffer *buf;