From b783fc4d1366658200bf759e1010655a9e2e145c Mon Sep 17 00:00:00 2001 From: Daniel J Blueman Date: Sun, 12 Nov 2023 00:38:41 +0000 Subject: bcachefs: Fix potential sleeping during mount During mount, bcachefs mount option processing may sleep while allocating a string buffer. Fix this by reference counting in order to take the atomic path. Signed-off-by: Daniel J Blueman Signed-off-by: Kent Overstreet --- fs/bcachefs/disk_groups.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'fs') diff --git a/fs/bcachefs/disk_groups.c b/fs/bcachefs/disk_groups.c index 1f334124055b..4d0cb0ccff32 100644 --- a/fs/bcachefs/disk_groups.c +++ b/fs/bcachefs/disk_groups.c @@ -555,6 +555,7 @@ void bch2_target_to_text(struct printbuf *out, struct bch_fs *c, unsigned v) case TARGET_DEV: { struct bch_dev *ca; + out->atomic++; rcu_read_lock(); ca = t.dev < c->sb.nr_devices ? rcu_dereference(c->devs[t.dev]) @@ -570,6 +571,7 @@ void bch2_target_to_text(struct printbuf *out, struct bch_fs *c, unsigned v) } rcu_read_unlock(); + out->atomic--; break; } case TARGET_GROUP: -- cgit v1.2.3-70-g09d2