Commit 75474a54 authored by Kent Overstreet's avatar Kent Overstreet
Browse files

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: default avatarKent Overstreet <kent.overstreet@linux.dev>
parent 35f51970

fs/bcachefs/journal_io.c

+2 −0
Original line number Diff line number Diff line
@@ -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;