diff options
Diffstat (limited to 'drivers/md/bcache/sysfs.c')
| -rw-r--r-- | drivers/md/bcache/sysfs.c | 81 |
1 files changed, 59 insertions, 22 deletions
diff --git a/drivers/md/bcache/sysfs.c b/drivers/md/bcache/sysfs.c index 557a8a3270a1..17bae9c14ca0 100644 --- a/drivers/md/bcache/sysfs.c +++ b/drivers/md/bcache/sysfs.c @@ -67,6 +67,8 @@ read_attribute(written); read_attribute(btree_written); read_attribute(metadata_written); read_attribute(active_journal_entries); +read_attribute(backing_dev_name); +read_attribute(backing_dev_uuid); sysfs_time_stats_attribute(btree_gc, sec, ms); sysfs_time_stats_attribute(btree_split, sec, us); @@ -243,6 +245,19 @@ SHOW(__bch_cached_dev) return strlen(buf); } + if (attr == &sysfs_backing_dev_name) { + snprintf(buf, BDEVNAME_SIZE + 1, "%s", dc->backing_dev_name); + strcat(buf, "\n"); + return strlen(buf); + } + + if (attr == &sysfs_backing_dev_uuid) { + /* convert binary uuid into 36-byte string plus '\0' */ + snprintf(buf, 36+1, "%pU", dc->sb.uuid); + strcat(buf, "\n"); + return strlen(buf); + } + #undef var return 0; } @@ -262,10 +277,10 @@ STORE(__cached_dev) sysfs_strtoul(data_csum, dc->disk.data_csum); d_strtoul(verify); - d_strtoul(bypass_torture_test); - d_strtoul(writeback_metadata); - d_strtoul(writeback_running); - d_strtoul(writeback_delay); + sysfs_strtoul_bool(bypass_torture_test, dc->bypass_torture_test); + sysfs_strtoul_bool(writeback_metadata, dc->writeback_metadata); + sysfs_strtoul_bool(writeback_running, dc->writeback_running); + sysfs_strtoul_clamp(writeback_delay, dc->writeback_delay, 0, UINT_MAX); sysfs_strtoul_clamp(writeback_percent, dc->writeback_percent, 0, bch_cutoff_writeback); @@ -287,9 +302,15 @@ STORE(__cached_dev) sysfs_strtoul_clamp(writeback_rate_update_seconds, dc->writeback_rate_update_seconds, 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(writeback_rate_i_term_inverse, + dc->writeback_rate_i_term_inverse, + 1, UINT_MAX); + sysfs_strtoul_clamp(writeback_rate_p_term_inverse, + dc->writeback_rate_p_term_inverse, + 1, UINT_MAX); + sysfs_strtoul_clamp(writeback_rate_minimum, + dc->writeback_rate_minimum, + 1, UINT_MAX); sysfs_strtoul_clamp(io_error_limit, dc->error_limit, 0, INT_MAX); @@ -299,7 +320,9 @@ STORE(__cached_dev) dc->io_disable = v ? 1 : 0; } - d_strtoi_h(sequential_cutoff); + sysfs_strtoul_clamp(sequential_cutoff, + dc->sequential_cutoff, + 0, UINT_MAX); d_strtoi_h(readahead); if (attr == &sysfs_clear_stats) @@ -452,6 +475,8 @@ static struct attribute *bch_cached_dev_files[] = { &sysfs_verify, &sysfs_bypass_torture_test, #endif + &sysfs_backing_dev_name, + &sysfs_backing_dev_uuid, NULL }; KTYPE(bch_cached_dev); @@ -761,10 +786,12 @@ STORE(__bch_cache_set) c->shrink.scan_objects(&c->shrink, &sc); } - sysfs_strtoul(congested_read_threshold_us, - c->congested_read_threshold_us); - sysfs_strtoul(congested_write_threshold_us, - c->congested_write_threshold_us); + sysfs_strtoul_clamp(congested_read_threshold_us, + c->congested_read_threshold_us, + 0, UINT_MAX); + sysfs_strtoul_clamp(congested_write_threshold_us, + c->congested_write_threshold_us, + 0, UINT_MAX); if (attr == &sysfs_errors) { v = __sysfs_match_string(error_actions, -1, buf); @@ -774,12 +801,20 @@ STORE(__bch_cache_set) c->on_error = v; } - if (attr == &sysfs_io_error_limit) - c->error_limit = strtoul_or_return(buf); + sysfs_strtoul_clamp(io_error_limit, c->error_limit, 0, UINT_MAX); /* See count_io_errors() for why 88 */ - if (attr == &sysfs_io_error_halflife) - c->error_decay = strtoul_or_return(buf) / 88; + if (attr == &sysfs_io_error_halflife) { + unsigned long v = 0; + ssize_t ret; + + ret = strtoul_safe_clamp(buf, v, 0, UINT_MAX); + if (!ret) { + c->error_decay = v / 88; + return size; + } + return ret; + } if (attr == &sysfs_io_disable) { v = strtoul_or_return(buf); @@ -794,13 +829,15 @@ STORE(__bch_cache_set) } } - sysfs_strtoul(journal_delay_ms, c->journal_delay_ms); - sysfs_strtoul(verify, c->verify); - sysfs_strtoul(key_merging_disabled, c->key_merging_disabled); + sysfs_strtoul_clamp(journal_delay_ms, + c->journal_delay_ms, + 0, USHRT_MAX); + sysfs_strtoul_bool(verify, c->verify); + sysfs_strtoul_bool(key_merging_disabled, c->key_merging_disabled); sysfs_strtoul(expensive_debug_checks, c->expensive_debug_checks); - sysfs_strtoul(gc_always_rewrite, c->gc_always_rewrite); - sysfs_strtoul(btree_shrinker_disabled, c->shrinker_disabled); - sysfs_strtoul(copy_gc_enabled, c->copy_gc_enabled); + sysfs_strtoul_bool(gc_always_rewrite, c->gc_always_rewrite); + sysfs_strtoul_bool(btree_shrinker_disabled, c->shrinker_disabled); + sysfs_strtoul_bool(copy_gc_enabled, c->copy_gc_enabled); /* * write gc_after_writeback here may overwrite an already set * BCH_DO_AUTO_GC, it doesn't matter because this flag will be |