bcachefs: kill bch2_fs_usage_read()

With bch2_ioctl_fs_usage(), this is now dead code.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

1 files changed, 0 insertions, 34 deletions

diff --git a/fs/bcachefs/buckets.c b/fs/bcachefs/buckets.c
index 2fd7a55f6373..07cdb4299918 100644
--- a/fs/bcachefs/buckets.c
+++ b/fs/bcachefs/buckets.c
@@ -64,40 +64,6 @@ u64 bch2_fs_usage_read_one(struct bch_fs *c, u64 *v)
 	return ret;
 }
 
-struct bch_fs_usage_online *bch2_fs_usage_read(struct bch_fs *c)
-{
-	struct bch_fs_usage_online *ret;
-	unsigned nr_replicas = READ_ONCE(c->replicas.nr);
-	unsigned seq, i;
-retry:
-	ret = kmalloc(__fs_usage_online_u64s(nr_replicas) * sizeof(u64), GFP_KERNEL);
-	if (unlikely(!ret))
-		return NULL;
-
-	percpu_down_read(&c->mark_lock);
-
-	if (nr_replicas != c->replicas.nr) {
-		nr_replicas = c->replicas.nr;
-		percpu_up_read(&c->mark_lock);
-		kfree(ret);
-		goto retry;
-	}
-
-	ret->online_reserved = percpu_u64_get(c->online_reserved);
-
-	do {
-		seq = read_seqcount_begin(&c->usage_lock);
-		unsafe_memcpy(&ret->u, c->usage_base,
-			      __fs_usage_u64s(nr_replicas) * sizeof(u64),
-			      "embedded variable length struct");
-		for (i = 0; i < ARRAY_SIZE(c->usage); i++)
-			acc_u64s_percpu((u64 *) &ret->u, (u64 __percpu *) c->usage[i],
-					__fs_usage_u64s(nr_replicas));
-	} while (read_seqcount_retry(&c->usage_lock, seq));
-
-	return ret;
-}
-
 void bch2_fs_usage_acc_to_base(struct bch_fs *c, unsigned idx)
 {
 	unsigned u64s = fs_usage_u64s(c);