[PATCH 4/7] bcachefs: Tweak threshold for allocator triggering discards
Kent Overstreet <[email protected]>
| Newsgroups | org.kernel.vger.linux-bcachefs |
|---|---|
| Message-ID | <[email protected]> |
The allocator path has a "if we're really low on free buckets, check if we should issue discards" - tweak this to also trigger discards if more than 1/128th of the device is in need_discard state. Signed-off-by: Kent Overstreet <[email protected]> --- fs/bcachefs/alloc_foreground.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/bcachefs/alloc_foreground.c b/fs/bcachefs/alloc_foreground.c index b375ad610acd..b58525ec7b4d 100644 --- a/fs/bcachefs/alloc_foreground.c +++ b/fs/bcachefs/alloc_foreground.c @@ -511,7 +511,8 @@ static struct open_bucket *bch2_bucket_alloc_trans(struct btree_trans *trans, bch2_dev_usage_read_fast(ca, &req->usage); avail = dev_buckets_free(ca, req->usage, req->watermark); - if (req->usage.buckets[BCH_DATA_need_discard] > avail) + if (req->usage.buckets[BCH_DATA_need_discard] > + min(avail, ca->mi.nbuckets >> 7)) bch2_dev_do_discards(ca); if (req->usage.buckets[BCH_DATA_need_gc_gens] > avail) -- 2.50.0