bcachefs: Convert compression_stats to for_each_btree_key2

for_each_btree_key2() runs each loop iteration in a btree transaction,
and thus does not cause SRCU lock hold time problems.

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

diff --git a/fs/bcachefs/sysfs.c b/fs/bcachefs/sysfs.c
index ab743115f169e5fc1a7c665148d0c877800fefab..f3cb7115b530bb29dcd35453931a05753438f0fb 100644 (file)
--- a/fs/bcachefs/sysfs.c
+++ b/fs/bcachefs/sysfs.c
@@ -276,8 +276,8 @@ static int bch2_compression_stats_to_text(struct printbuf *out, struct bch_fs *c
                if (!btree_type_has_ptrs(id))
                        continue;
 
-               for_each_btree_key(trans, iter, id, POS_MIN,
-                                  BTREE_ITER_ALL_SNAPSHOTS, k, ret) {
+               ret = for_each_btree_key2(trans, iter, id, POS_MIN,
+                                         BTREE_ITER_ALL_SNAPSHOTS, k, ({
                        struct bkey_ptrs_c ptrs = bch2_bkey_ptrs_c(k);
                        const union bch_extent_entry *entry;
                        struct extent_ptr_decoded p;
@@ -309,8 +309,8 @@ static int bch2_compression_stats_to_text(struct printbuf *out, struct bch_fs *c
                                nr_uncompressed_extents++;
                        else if (compressed)
                                nr_compressed_extents++;
-               }
-               bch2_trans_iter_exit(trans, &iter);
+                       0;
+               }));
        }
 
        bch2_trans_put(trans);