[RFC PATCH v4 16/34] ext4: drop ext4_es_delayed_clu()

Zhang Yi
2024-04-10T14:38:39Z

ext4_es_delayed_clu() and __es_delayed_clu() are not used, drop them.

Signed-off-by: Zhang Yi <yi.zhang@huawei.com>
---
fs/ext4/extents_status.c | 88 ----------------------------------------
fs/ext4/extents_status.h | 2 -
2 files changed, 90 deletions(-)

diff --git a/fs/ext4/extents_status.c b/fs/ext4/extents_status.c
index 75227f151b8f..9cac4ea57b73 100644
--- a/fs/ext4/extents_status.c
+++ b/fs/ext4/extents_status.c
@@ -2182,94 +2182,6 @@ void ext4_es_insert_delayed_extent(struct inode *inode, ext4_lblk_t lblk,
return;
}

-/*
- * __es_delayed_clu - count number of clusters containing blocks that
- * are delayed only
- *
- * @inode - file containing block range
- * @start - logical block defining start of range
- * @end - logical block defining end of range
- *
- * Returns the number of clusters containing only delayed (not delayed
- * and unwritten) blocks in the range specified by @start and @end. Any
- * cluster or part of a cluster within the range and containing a delayed
- * and not unwritten block within the range is counted as a whole cluster.
- */
-static unsigned int __es_delayed_clu(struct inode *inode, ext4_lblk_t start,
- ext4_lblk_t end)
-{
- struct ext4_es_tree *tree = &EXT4_I(inode)->i_es_tree;
- struct extent_status *es;
- struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
- struct rb_node *node;
- ext4_lblk_t first_lclu, last_lclu;
- unsigned long long last_counted_lclu;
- unsigned int n = 0;
-
- /* guaranteed to be unequal to any ext4_lblk_t value */
- last_counted_lclu = ~0ULL;
-
- es = __es_tree_search(&tree->root, start);
-
- while (es && (es->es_lblk <= end)) {
- if (ext4_es_is_delonly(es)) {
- if (es->es_lblk <= start)
- first_lclu = EXT4_B2C(sbi, start);
- else
- first_lclu = EXT4_B2C(sbi, es->es_lblk);
-
- if (ext4_es_end(es) >= end)
- last_lclu = EXT4_B2C(sbi, end);
- else
- last_lclu = EXT4_B2C(sbi, ext4_es_end(es));
-
- if (first_lclu == last_counted_lclu)
- n += last_lclu - first_lclu;
- else
- n += last_lclu - first_lclu + 1;
- last_counted_lclu = last_lclu;
- }
- node = rb_next(&es->rb_node);
- if (!node)
- break;
- es = rb_entry(node, struct extent_status, rb_node);
- }
-
- return n;
-}
-
-/*
- * ext4_es_delayed_clu - count number of clusters containing blocks that
- * are both delayed and unwritten
- *
- * @inode - file containing block range
- * @lblk - logical block defining start of range
- * @len - number of blocks in range
- *
- * Locking for external use of __es_delayed_clu().
- */
-unsigned int ext4_es_delayed_clu(struct inode *inode, ext4_lblk_t lblk,
- ext4_lblk_t len)
-{
- struct ext4_inode_info *ei = EXT4_I(inode);
- ext4_lblk_t end;
- unsigned int n;
-
- if (len == 0)
- return 0;
-
- end = lblk + len - 1;
- WARN_ON(end < lblk);
-
- read_lock(&ei->i_es_lock);
-
- n = __es_delayed_clu(inode, lblk, end);
-
- read_unlock(&ei->i_es_lock);
-
- return n;
-}
-
/*
* __revise_pending - makes, cancels, or leaves unchanged pending cluster
* reservations for a specified block range depending
diff --git a/fs/ext4/extents_status.h b/fs/ext4/extents_status.h
index 3c8e2edee5d5..5b49cb3b9aff 100644
--- a/fs/ext4/extents_status.h
+++ b/fs/ext4/extents_status.h
@@ -252,8 +252,6 @@ extern bool ext4_is_pending(struct inode *inode, ext4_lblk_t lblk);
extern void ext4_es_insert_delayed_extent(struct inode *inode, ext4_lblk_t lblk,
ext4_lblk_t len, bool lclu_allocated,
bool end_allocated);
-extern unsigned int ext4_es_delayed_clu(struct inode *inode, ext4_lblk_t lblk,
- ext4_lblk_t len);
extern void ext4_clear_inode_es(struct inode *inode);

#endif /* _EXT4_EXTENTS_STATUS_H */
--
2.39.2