From: Ben Peddell klightspeed@killerwolves.net
[ Upstream commit 7567c2a2ad9e80a2ce977eef535e64b61899633e ]
Forgot to include the maintainers with my first email.
Somewhere between Michael Lyle's original "bcache: PI controller for writeback rate V2" patch dated 07 Sep 2017 and 1d316e6 bcache: implement PI controller for writeback rate, the mapping of the writeback_rate_minimum attribute was dropped.
Re-add the missing sysfs writeback_rate_minimum attribute mapping to "allow the user to specify a minimum rate at which dirty blocks are retired."
Fixes: 1d316e6 ("bcache: implement PI controller for writeback rate") Signed-off-by: Ben Peddell klightspeed@killerwolves.net Signed-off-by: Coly Li colyli@suse.de Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/md/bcache/sysfs.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/md/bcache/sysfs.c b/drivers/md/bcache/sysfs.c index 225b15aa0340..34819f2c257d 100644 --- a/drivers/md/bcache/sysfs.c +++ b/drivers/md/bcache/sysfs.c @@ -263,6 +263,7 @@ STORE(__cached_dev) 1, WRITEBACK_RATE_UPDATE_SECS_MAX); d_strtoul(writeback_rate_i_term_inverse); d_strtoul_nonzero(writeback_rate_p_term_inverse); + d_strtoul_nonzero(writeback_rate_minimum);
sysfs_strtoul_clamp(io_error_limit, dc->error_limit, 0, INT_MAX);
@@ -389,6 +390,7 @@ static struct attribute *bch_cached_dev_files[] = { &sysfs_writeback_rate_update_seconds, &sysfs_writeback_rate_i_term_inverse, &sysfs_writeback_rate_p_term_inverse, + &sysfs_writeback_rate_minimum, &sysfs_writeback_rate_debug, &sysfs_errors, &sysfs_io_error_limit,