diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/md/md.c | 1 | ||||
| -rw-r--r-- | drivers/md/raid1.c | 29 | ||||
| -rw-r--r-- | drivers/md/raid1.h | 5 |
3 files changed, 34 insertions, 1 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index 7d5a6cede9b0..8644ce76e5f8 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -8629,6 +8629,7 @@ int rdev_set_badblocks(struct md_rdev *rdev, sector_t s, int sectors, /* Make sure they get written out promptly */ sysfs_notify_dirent_safe(rdev->sysfs_state); set_bit(MD_CHANGE_CLEAN, &rdev->mddev->flags); + set_bit(MD_CHANGE_PENDING, &rdev->mddev->flags); md_wakeup_thread(rdev->mddev->thread); } return rv; diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index 742b50794dfd..3d9ca836247f 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -1508,6 +1508,7 @@ static void error(struct mddev *mddev, struct md_rdev *rdev) */ set_bit(MD_RECOVERY_INTR, &mddev->recovery); set_bit(MD_CHANGE_DEVS, &mddev->flags); + set_bit(MD_CHANGE_PENDING, &mddev->flags); printk(KERN_ALERT "md/raid1:%s: Disk failure on %s, disabling device.\n" "md/raid1:%s: Operation continuing on %d devices.\n", @@ -2289,6 +2290,7 @@ static void handle_sync_write_finished(struct r1conf *conf, struct r1bio *r1_bio static void handle_write_finished(struct r1conf *conf, struct r1bio *r1_bio) { int m; + bool fail = false; for (m = 0; m < conf->raid_disks * 2 ; m++) if (r1_bio->bios[m] == IO_MADE_GOOD) { struct md_rdev *rdev = conf->mirrors[m].rdev; @@ -2301,6 +2303,7 @@ static void handle_write_finished(struct r1conf *conf, struct r1bio *r1_bio) * narrow down and record precise write * errors. */ + fail = true; if (!narrow_write_error(r1_bio, m)) { md_error(conf->mddev, conf->mirrors[m].rdev); @@ -2312,7 +2315,13 @@ static void handle_write_finished(struct r1conf *conf, struct r1bio *r1_bio) } if (test_bit(R1BIO_WriteError, &r1_bio->state)) close_write(r1_bio); - raid_end_bio_io(r1_bio); + if (fail) { + spin_lock_irq(&conf->device_lock); + list_add(&r1_bio->retry_list, &conf->bio_end_io_list); + spin_unlock_irq(&conf->device_lock); + md_wakeup_thread(conf->mddev->thread); + } else + raid_end_bio_io(r1_bio); } static void handle_read_error(struct r1conf *conf, struct r1bio *r1_bio) @@ -2418,6 +2427,23 @@ static void raid1d(struct md_thread *thread) md_check_recovery(mddev); + if (!list_empty_careful(&conf->bio_end_io_list) && + !test_bit(MD_CHANGE_PENDING, &mddev->flags)) { + LIST_HEAD(tmp); + spin_lock_irqsave(&conf->device_lock, flags); + if (!test_bit(MD_CHANGE_PENDING, &mddev->flags)) { + list_add(&tmp, &conf->bio_end_io_list); + list_del_init(&conf->bio_end_io_list); + } + spin_unlock_irqrestore(&conf->device_lock, flags); + while (!list_empty(&tmp)) { + r1_bio = list_first_entry(&conf->bio_end_io_list, + struct r1bio, retry_list); + list_del(&r1_bio->retry_list); + raid_end_bio_io(r1_bio); + } + } + blk_start_plug(&plug); for (;;) { @@ -2819,6 +2845,7 @@ static struct r1conf *setup_conf(struct mddev *mddev) conf->raid_disks = mddev->raid_disks; conf->mddev = mddev; INIT_LIST_HEAD(&conf->retry_list); + INIT_LIST_HEAD(&conf->bio_end_io_list); spin_lock_init(&conf->resync_lock); init_waitqueue_head(&conf->wait_barrier); diff --git a/drivers/md/raid1.h b/drivers/md/raid1.h index 14ebb288c1ef..c52d7139c5d7 100644 --- a/drivers/md/raid1.h +++ b/drivers/md/raid1.h @@ -61,6 +61,11 @@ struct r1conf { * block, or anything else. */ struct list_head retry_list; + /* A separate list of r1bio which just need raid_end_bio_io called. + * This mustn't happen for writes which had any errors if the superblock + * needs to be written. + */ + struct list_head bio_end_io_list; /* queue pending writes to be submitted on unplug */ struct bio_list pending_bio_list; |