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 <[email protected]> --- 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 <linux/ioprio.h> #include <linux/string_choices.h> 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; -- 2.45.2
