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| author | Kent Overstreet <kent.overstreet@gmail.com> | 2019-09-18 19:33:12 -0400 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@gmail.com> | 2019-09-21 15:09:12 -0400 |
| commit | 4ddc20ef7ddcde6ed426d5395749ff58ba3b6eec (patch) | |
| tree | 4eeacfeb206e6dee5ddc071e3310f71fcf6328db | |
| parent | 250a10470ba6ee5ec69d2db41f55fc1484117e5e (diff) | |
bcachefs: Avoid deadlocking on the allocator
The allocator needs to make sure there's buckets available on the
RESERVE_NONE freelist if at all possible - otherwise foreground IO will
get stuck.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
| -rw-r--r-- | fs/bcachefs/alloc_background.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/bcachefs/alloc_background.c b/fs/bcachefs/alloc_background.c index 7a457729cf18..9814179a6406 100644 --- a/fs/bcachefs/alloc_background.c +++ b/fs/bcachefs/alloc_background.c @@ -1164,7 +1164,7 @@ static int bch2_allocator_thread(void *arg) */ if (!nr || (nr < ALLOC_SCAN_BATCH(ca) && - !fifo_full(&ca->free[RESERVE_MOVINGGC]))) { + !fifo_empty(&ca->free[RESERVE_NONE]))) { ret = wait_buckets_available(c, ca); if (ret) { up_read(&c->gc_lock); |