diff options
Diffstat (limited to 'drivers/md')
-rw-r--r-- | drivers/md/dm-crypt.c | 2 | ||||
-rw-r--r-- | drivers/md/dm-flakey.c | 4 | ||||
-rw-r--r-- | drivers/md/dm-kcopyd.c | 1 | ||||
-rw-r--r-- | drivers/md/dm-raid.c | 2 | ||||
-rw-r--r-- | drivers/md/dm-table.c | 32 | ||||
-rw-r--r-- | drivers/md/md.c | 22 | ||||
-rw-r--r-- | drivers/md/md.h | 2 | ||||
-rw-r--r-- | drivers/md/multipath.c | 3 | ||||
-rw-r--r-- | drivers/md/raid1.c | 3 | ||||
-rw-r--r-- | drivers/md/raid10.c | 5 | ||||
-rw-r--r-- | drivers/md/raid5.c | 6 |
11 files changed, 59 insertions, 23 deletions
diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c index 49da55c1528..8c2a000cf3f 100644 --- a/drivers/md/dm-crypt.c +++ b/drivers/md/dm-crypt.c @@ -1698,6 +1698,8 @@ static int crypt_ctr(struct dm_target *ti, unsigned int argc, char **argv) } ti->num_flush_requests = 1; + ti->discard_zeroes_data_unsupported = 1; + return 0; bad: diff --git a/drivers/md/dm-flakey.c b/drivers/md/dm-flakey.c index 89f73ca22cf..f84c08029b2 100644 --- a/drivers/md/dm-flakey.c +++ b/drivers/md/dm-flakey.c @@ -81,8 +81,10 @@ static int parse_features(struct dm_arg_set *as, struct flakey_c *fc, * corrupt_bio_byte <Nth_byte> <direction> <value> <bio_flags> */ if (!strcasecmp(arg_name, "corrupt_bio_byte")) { - if (!argc) + if (!argc) { ti->error = "Feature corrupt_bio_byte requires parameters"; + return -EINVAL; + } r = dm_read_arg(_args + 1, as, &fc->corrupt_bio_byte, &ti->error); if (r) diff --git a/drivers/md/dm-kcopyd.c b/drivers/md/dm-kcopyd.c index f8214702963..32ac70861d6 100644 --- a/drivers/md/dm-kcopyd.c +++ b/drivers/md/dm-kcopyd.c @@ -628,6 +628,7 @@ void *dm_kcopyd_prepare_callback(struct dm_kcopyd_client *kc, job->kc = kc; job->fn = fn; job->context = context; + job->master_job = job; atomic_inc(&kc->nr_jobs); diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c index a002dd85db1..86df8b2cf92 100644 --- a/drivers/md/dm-raid.c +++ b/drivers/md/dm-raid.c @@ -449,7 +449,7 @@ static int parse_raid_params(struct raid_set *rs, char **argv, rs->ti->error = "write_mostly option is only valid for RAID1"; return -EINVAL; } - if (value > rs->md.raid_disks) { + if (value >= rs->md.raid_disks) { rs->ti->error = "Invalid write_mostly drive index given"; return -EINVAL; } diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index 986b8754bb0..bc04518e9d8 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -1238,14 +1238,15 @@ static void dm_table_set_integrity(struct dm_table *t) return; template_disk = dm_table_get_integrity_disk(t, true); - if (!template_disk && - blk_integrity_is_initialized(dm_disk(t->md))) { + if (template_disk) + blk_integrity_register(dm_disk(t->md), + blk_get_integrity(template_disk)); + else if (blk_integrity_is_initialized(dm_disk(t->md))) DMWARN("%s: device no longer has a valid integrity profile", dm_device_name(t->md)); - return; - } - blk_integrity_register(dm_disk(t->md), - blk_get_integrity(template_disk)); + else + DMWARN("%s: unable to establish an integrity profile", + dm_device_name(t->md)); } static int device_flush_capable(struct dm_target *ti, struct dm_dev *dev, @@ -1282,6 +1283,22 @@ static bool dm_table_supports_flush(struct dm_table *t, unsigned flush) return 0; } +static bool dm_table_discard_zeroes_data(struct dm_table *t) +{ + struct dm_target *ti; + unsigned i = 0; + + /* Ensure that all targets supports discard_zeroes_data. */ + while (i < dm_table_get_num_targets(t)) { + ti = dm_table_get_target(t, i++); + + if (ti->discard_zeroes_data_unsupported) + return 0; + } + + return 1; +} + void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q, struct queue_limits *limits) { @@ -1304,6 +1321,9 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q, } blk_queue_flush(q, flush); + if (!dm_table_discard_zeroes_data(t)) + q->limits.discard_zeroes_data = 0; + dm_table_set_integrity(t); /* diff --git a/drivers/md/md.c b/drivers/md/md.c index 5404b229582..5c95ccb5950 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -61,6 +61,11 @@ static void autostart_arrays(int part); #endif +/* pers_list is a list of registered personalities protected + * by pers_lock. + * pers_lock does extra service to protect accesses to + * mddev->thread when the mutex cannot be held. + */ static LIST_HEAD(pers_list); static DEFINE_SPINLOCK(pers_lock); @@ -739,7 +744,12 @@ static void mddev_unlock(mddev_t * mddev) } else mutex_unlock(&mddev->reconfig_mutex); + /* was we've dropped the mutex we need a spinlock to + * make sur the thread doesn't disappear + */ + spin_lock(&pers_lock); md_wakeup_thread(mddev->thread); + spin_unlock(&pers_lock); } static mdk_rdev_t * find_rdev_nr(mddev_t *mddev, int nr) @@ -6429,11 +6439,18 @@ mdk_thread_t *md_register_thread(void (*run) (mddev_t *), mddev_t *mddev, return thread; } -void md_unregister_thread(mdk_thread_t *thread) +void md_unregister_thread(mdk_thread_t **threadp) { + mdk_thread_t *thread = *threadp; if (!thread) return; dprintk("interrupting MD-thread pid %d\n", task_pid_nr(thread->tsk)); + /* Locking ensures that mddev_unlock does not wake_up a + * non-existent thread + */ + spin_lock(&pers_lock); + *threadp = NULL; + spin_unlock(&pers_lock); kthread_stop(thread->tsk); kfree(thread); @@ -7340,8 +7357,7 @@ static void reap_sync_thread(mddev_t *mddev) mdk_rdev_t *rdev; /* resync has finished, collect result */ - md_unregister_thread(mddev->sync_thread); - mddev->sync_thread = NULL; + md_unregister_thread(&mddev->sync_thread); if (!test_bit(MD_RECOVERY_INTR, &mddev->recovery) && !test_bit(MD_RECOVERY_REQUESTED, &mddev->recovery)) { /* success...*/ diff --git a/drivers/md/md.h b/drivers/md/md.h index 1e586bb4452..0a309dc29b4 100644 --- a/drivers/md/md.h +++ b/drivers/md/md.h @@ -560,7 +560,7 @@ extern int register_md_personality(struct mdk_personality *p); extern int unregister_md_personality(struct mdk_personality *p); extern mdk_thread_t * md_register_thread(void (*run) (mddev_t *mddev), mddev_t *mddev, const char *name); -extern void md_unregister_thread(mdk_thread_t *thread); +extern void md_unregister_thread(mdk_thread_t **threadp); extern void md_wakeup_thread(mdk_thread_t *thread); extern void md_check_recovery(mddev_t *mddev); extern void md_write_start(mddev_t *mddev, struct bio *bi); diff --git a/drivers/md/multipath.c b/drivers/md/multipath.c index 3535c23af28..d5b5fb30017 100644 --- a/drivers/md/multipath.c +++ b/drivers/md/multipath.c @@ -514,8 +514,7 @@ static int multipath_stop (mddev_t *mddev) { multipath_conf_t *conf = mddev->private; - md_unregister_thread(mddev->thread); - mddev->thread = NULL; + md_unregister_thread(&mddev->thread); blk_sync_queue(mddev->queue); /* the unplug fn references 'conf'*/ mempool_destroy(conf->pool); kfree(conf->multipaths); diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index f4622dd8fc5..d9587dffe53 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -2562,8 +2562,7 @@ static int stop(mddev_t *mddev) raise_barrier(conf); lower_barrier(conf); - md_unregister_thread(mddev->thread); - mddev->thread = NULL; + md_unregister_thread(&mddev->thread); if (conf->r1bio_pool) mempool_destroy(conf->r1bio_pool); kfree(conf->mirrors); diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index d7a8468ddea..0cd9672cf9c 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -2955,7 +2955,7 @@ static int run(mddev_t *mddev) return 0; out_free_conf: - md_unregister_thread(mddev->thread); + md_unregister_thread(&mddev->thread); if (conf->r10bio_pool) mempool_destroy(conf->r10bio_pool); safe_put_page(conf->tmppage); @@ -2973,8 +2973,7 @@ static int stop(mddev_t *mddev) raise_barrier(conf, 0); lower_barrier(conf); - md_unregister_thread(mddev->thread); - mddev->thread = NULL; + md_unregister_thread(&mddev->thread); blk_sync_queue(mddev->queue); /* the unplug fn references 'conf'*/ if (conf->r10bio_pool) mempool_destroy(conf->r10bio_pool); diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 43709fa6b6d..ac5e8b57e50 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -4941,8 +4941,7 @@ static int run(mddev_t *mddev) return 0; abort: - md_unregister_thread(mddev->thread); - mddev->thread = NULL; + md_unregister_thread(&mddev->thread); if (conf) { print_raid5_conf(conf); free_conf(conf); @@ -4956,8 +4955,7 @@ static int stop(mddev_t *mddev) { raid5_conf_t *conf = mddev->private; - md_unregister_thread(mddev->thread); - mddev->thread = NULL; + md_unregister_thread(&mddev->thread); if (mddev->queue) mddev->queue->backing_dev_info.congested_fn = NULL; free_conf(conf); |