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| author | Kent Overstreet <kent.overstreet@linux.dev> | 2023-11-20 17:24:32 -0500 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@linux.dev> | 2023-11-24 02:08:25 -0500 |
| commit | 50e029c6390a6795869b742a5fce1e57d6a76c82 (patch) | |
| tree | 072b0f894d0989609a47db26900eda354ca50bba /fs | |
| parent | 6201d91ee32cf92e9bcca69a3cf73461827b5ce5 (diff) | |
| download | linux-stable-50e029c6390a6795869b742a5fce1e57d6a76c82.tar.gz linux-stable-50e029c6390a6795869b742a5fce1e57d6a76c82.tar.bz2 linux-stable-50e029c6390a6795869b742a5fce1e57d6a76c82.zip | |
bcachefs: bch2_moving_ctxt_flush_all()
Introduce a new helper to flush all move IOs, and use it in a few places
where we should have been.
The new helper also drops btree locks before waiting on outstanding move
writes, avoiding potential deadlocks.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/bcachefs/move.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/fs/bcachefs/move.c b/fs/bcachefs/move.c index ab749bf2fcbc..7819ed8d9df9 100644 --- a/fs/bcachefs/move.c +++ b/fs/bcachefs/move.c @@ -163,12 +163,18 @@ void bch2_move_ctxt_wait_for_io(struct moving_context *ctxt) atomic_read(&ctxt->write_sectors) != sectors_pending); } +static void bch2_moving_ctxt_flush_all(struct moving_context *ctxt) +{ + move_ctxt_wait_event(ctxt, list_empty(&ctxt->reads)); + bch2_trans_unlock_long(ctxt->trans); + closure_sync(&ctxt->cl); +} + void bch2_moving_ctxt_exit(struct moving_context *ctxt) { struct bch_fs *c = ctxt->trans->c; - move_ctxt_wait_event(ctxt, list_empty(&ctxt->reads)); - closure_sync(&ctxt->cl); + bch2_moving_ctxt_flush_all(ctxt); EBUG_ON(atomic_read(&ctxt->write_sectors)); EBUG_ON(atomic_read(&ctxt->write_ios)); @@ -484,8 +490,8 @@ int bch2_move_ratelimit(struct moving_context *ctxt) struct bch_fs *c = ctxt->trans->c; u64 delay; - if (ctxt->wait_on_copygc && !c->copygc_running) { - bch2_trans_unlock_long(ctxt->trans); + if (ctxt->wait_on_copygc && c->copygc_running) { + bch2_moving_ctxt_flush_all(ctxt); wait_event_killable(c->copygc_running_wq, !c->copygc_running || kthread_should_stop()); @@ -512,7 +518,7 @@ int bch2_move_ratelimit(struct moving_context *ctxt) schedule_timeout(delay); if (unlikely(freezing(current))) { - move_ctxt_wait_event(ctxt, list_empty(&ctxt->reads)); + bch2_moving_ctxt_flush_all(ctxt); try_to_freeze(); } } while (delay); |