diff options
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/bcache/sysfs.c | 26 |
1 files changed, 16 insertions, 10 deletions
diff --git a/drivers/md/bcache/sysfs.c b/drivers/md/bcache/sysfs.c index 225b15aa0340..3e9d3459a224 100644 --- a/drivers/md/bcache/sysfs.c +++ b/drivers/md/bcache/sysfs.c @@ -149,6 +149,7 @@ SHOW(__bch_cached_dev) struct cached_dev *dc = container_of(kobj, struct cached_dev, disk.kobj); const char *states[] = { "no cache", "clean", "dirty", "inconsistent" }; + int wb = dc->writeback_running; #define var(stat) (dc->stat) @@ -170,7 +171,7 @@ SHOW(__bch_cached_dev) var_printf(writeback_running, "%i"); var_print(writeback_delay); var_print(writeback_percent); - sysfs_hprint(writeback_rate, dc->writeback_rate.rate << 9); + sysfs_hprint(writeback_rate, wb ? dc->writeback_rate.rate << 9 : 0); sysfs_hprint(io_errors, atomic_read(&dc->io_errors)); sysfs_printf(io_error_limit, "%i", dc->error_limit); sysfs_printf(io_disable, "%i", dc->io_disable); @@ -188,15 +189,20 @@ SHOW(__bch_cached_dev) char change[20]; s64 next_io; - bch_hprint(rate, dc->writeback_rate.rate << 9); - bch_hprint(dirty, bcache_dev_sectors_dirty(&dc->disk) << 9); - bch_hprint(target, dc->writeback_rate_target << 9); - bch_hprint(proportional,dc->writeback_rate_proportional << 9); - bch_hprint(integral, dc->writeback_rate_integral_scaled << 9); - bch_hprint(change, dc->writeback_rate_change << 9); - - next_io = div64_s64(dc->writeback_rate.next - local_clock(), - NSEC_PER_MSEC); + /* + * Except for dirty and target, other values should + * be 0 if writeback is not running. + */ + bch_hprint(rate, wb ? dc->writeback_rate.rate << 9 : 0); + bch_hprint(dirty, bcache_dev_sectors_dirty(&dc->disk) << 9); + bch_hprint(target, dc->writeback_rate_target << 9); + bch_hprint(proportional, + wb ? dc->writeback_rate_proportional << 9 : 0); + bch_hprint(integral, + wb ? dc->writeback_rate_integral_scaled << 9 : 0); + bch_hprint(change, wb ? dc->writeback_rate_change << 9 : 0); + next_io = wb ? div64_s64(dc->writeback_rate.next-local_clock(), + NSEC_PER_MSEC) : 0; return sprintf(buf, "rate:\t\t%s/sec\n" |