From: Darrick J. Wong <djwong@xxxxxxxxxx> Switch f2fs to use a per-sb fsverity workqueue instead of a systemwide workqueue. Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx> --- fs/f2fs/super.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index a4bc26dfdb1af..06ac11bb2d214 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -4423,6 +4423,17 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent) #endif #ifdef CONFIG_FS_VERITY sb->s_vop = &f2fs_verityops; + /* + * Use a high-priority workqueue to prioritize verification work, which + * blocks reads from completing, over regular application tasks. + * + * For performance reasons, don't use an unbound workqueue. Using an + * unbound workqueue for crypto operations causes excessive scheduler + * latency on ARM64. + */ + err = fsverity_init_wq(sb, WQ_HIGHPRI, num_online_cpus()); + if (err) + goto free_bio_info; #endif sb->s_xattr = f2fs_xattr_handlers; sb->s_export_op = &f2fs_export_ops;
