From 75474a54ed354ab7b00b8557ca7a166871473848 Mon Sep 17 00:00:00 2001 From: Kent Overstreet Date: Fri, 24 Jan 2025 21:29:24 -0500 Subject: [PATCH] bcachefs: Journal writes are now IOPRIO_CLASS_RT System performance is particularly sensitive to journal write latency, the number of outstanding journal writes is bounded and we can't issue journal flushes until other journal writes have completed. Signed-off-by: Kent Overstreet --- fs/bcachefs/journal_io.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/bcachefs/journal_io.c b/fs/bcachefs/journal_io.c index 7f2efe85a805..11c39e0c34f4 100644 --- a/fs/bcachefs/journal_io.c +++ b/fs/bcachefs/journal_io.c @@ -17,6 +17,7 @@ #include "sb-clean.h" #include "trace.h" +#include #include void bch2_journal_pos_from_member_info_set(struct bch_fs *c) @@ -1763,6 +1764,7 @@ static CLOSURE_CALLBACK(journal_write_submit) bio->bi_iter.bi_sector = ptr->offset; bio->bi_end_io = journal_write_endio; bio->bi_private = ca; + bio->bi_ioprio = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_RT, 0); BUG_ON(bio->bi_iter.bi_sector == ca->prev_journal_sector); ca->prev_journal_sector = bio->bi_iter.bi_sector; -- 2.25.1