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bcachefs: Fix a locking bug in fsck

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This works around a btree locking issue - we can't be holding read locks
while taking write locks, which currently means we can't have live
iterators holding read locks at commit time.

Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2020-03-21 14:47:00 -04:00 committed by Kent Overstreet
parent fa4dc3987b
commit 0728eed7b6
1 changed files with 2 additions and 1 deletions
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3
fs/bcachefs/fsck.c
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@ -478,7 +478,8 @@ static int check_extents(struct bch_fs *c)
bch_verbose(c, "checking extents");
iter = bch2_trans_get_iter(&trans, BTREE_ID_EXTENTS,
POS(BCACHEFS_ROOT_INO, 0), 0);
POS(BCACHEFS_ROOT_INO, 0),
BTREE_ITER_INTENT);
retry:
for_each_btree_key_continue(iter, 0, k, ret) {
if (bkey_cmp(prev.p, bkey_start_pos(k.k)) > 0) {