diff options
| author | Kent Overstreet <kent.overstreet@gmail.com> | 2021-01-21 15:28:59 -0500 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@linux.dev> | 2023-10-22 17:08:52 -0400 |
| commit | 2abe542087d9cb1bc7bb8ac7ae262afccbdb7aa6 (patch) | |
| tree | c33f5733a5cf3f091e59e5084be29ef5819a9f71 /fs/bcachefs/movinggc.c | |
| parent | 7f4e1d5d0faff0d72e9f6708bf98488d76533846 (diff) | |
bcachefs: Persist 64 bit io clocks
Originally, bcachefs - going back to bcache - stored, for each bucket, a
16 bit counter corresponding to how long it had been since the bucket
was read from. But, this required periodically rescaling counters on
every bucket to avoid wraparound. That wasn't an issue in bcache, where
we'd perodically rewrite the per bucket metadata all at once, but in
bcachefs we're trying to avoid having to walk every single bucket.
This patch switches to persisting 64 bit io clocks, corresponding to the
64 bit bucket timestaps introduced in the previous patch with
KEY_TYPE_alloc_v2.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Diffstat (limited to 'fs/bcachefs/movinggc.c')
| -rw-r--r-- | fs/bcachefs/movinggc.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/bcachefs/movinggc.c b/fs/bcachefs/movinggc.c index 8e6e4cd73886..e2472c19beaf 100644 --- a/fs/bcachefs/movinggc.c +++ b/fs/bcachefs/movinggc.c @@ -298,7 +298,7 @@ static int bch2_copygc_thread(void *arg) { struct bch_fs *c = arg; struct io_clock *clock = &c->io_clock[WRITE]; - unsigned long last, wait; + u64 last, wait; set_freezable(); @@ -306,7 +306,7 @@ static int bch2_copygc_thread(void *arg) if (kthread_wait_freezable(c->copy_gc_enabled)) break; - last = atomic_long_read(&clock->now); + last = atomic64_read(&clock->now); wait = bch2_copygc_wait_amount(c); if (wait > clock->max_slop) { |