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bcachefs: Fix a locking bug in the do_discard_fast() path

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We can't discard a bucket while it's still open; this needs the
bucket_is_open_safe() version, which takes the open_buckets lock.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2024-06-17 09:09:52 -04:00
parent d47df4f616
commit 3727ca5604
1 changed files with 1 additions and 1 deletions
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2
fs/bcachefs/alloc_background.c
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@ -882,7 +882,7 @@ int bch2_trigger_alloc(struct btree_trans *trans,
closure_wake_up(&c->freelist_wait);
if (statechange(a->data_type == BCH_DATA_need_discard) &&
!bch2_bucket_is_open(c, new.k->p.inode, new.k->p.offset) &&
!bch2_bucket_is_open_safe(c, new.k->p.inode, new.k->p.offset) &&
bucket_flushed(new_a))
bch2_discard_one_bucket_fast(c, new.k->p);