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bcache: Populate writeback_rate_minimum attribute
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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>
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Ben Peddell authored and Jens Axboe committed Oct 8, 2018
1 parent 2e17a26 commit 7567c2a
Showing 1 changed file with 2 additions and 0 deletions.
2 changes: 2 additions & 0 deletions drivers/md/bcache/sysfs.c
Original file line number Diff line number Diff line change
Expand Up @@ -285,6 +285,7 @@ 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);

Expand Down Expand Up @@ -412,6 +413,7 @@ 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,
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