diff options
| author | NeilBrown <neilb@suse.de> | 2007-05-09 02:35:39 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-09 12:30:57 -0700 |
| commit | 5b479c91da90eef605f851508744bfe8269591a0 (patch) | |
| tree | d7c2844926d96d794d66b974b300eba2d047465e /drivers/md | |
| parent | 08a02ecd28bad35a47357e611044dcbeab06e3d7 (diff) | |
| download | linux-5b479c91da90eef605f851508744bfe8269591a0.tar.gz | |
md: improve partition detection in md array
md currently uses ->media_changed to make sure rescan_partitions is call on md array after they are assembled. However that doesn't happen until the array is opened, which is later than some people would like. So use blkdev_ioctl to do the rescan immediately that the array has been assembled. This means we can remove all the ->change infrastructure as it was only used to trigger a partition rescan. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/md.c | 26 | ||||
| -rw-r--r-- | drivers/md/raid1.c | 1 | ||||
| -rw-r--r-- | drivers/md/raid5.c | 2 |
3 files changed, 8 insertions, 21 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index 65814b0340cb..2901d0c0ee9e 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -3104,6 +3104,7 @@ static int do_md_run(mddev_t * mddev) struct gendisk *disk; struct mdk_personality *pers; char b[BDEVNAME_SIZE]; + struct block_device *bdev; if (list_empty(&mddev->disks)) /* cannot run an array with no devices.. */ @@ -3331,7 +3332,13 @@ static int do_md_run(mddev_t * mddev) md_wakeup_thread(mddev->thread); md_wakeup_thread(mddev->sync_thread); /* possibly kick off a reshape */ - mddev->changed = 1; + bdev = bdget_disk(mddev->gendisk, 0); + if (bdev) { + bd_set_size(bdev, mddev->array_size << 1); + blkdev_ioctl(bdev->bd_inode, NULL, BLKRRPART, 0); + bdput(bdev); + } + md_new_event(mddev); kobject_uevent(&mddev->gendisk->kobj, KOBJ_CHANGE); return 0; @@ -3453,7 +3460,6 @@ static int do_md_stop(mddev_t * mddev, int mode) mddev->pers = NULL; set_capacity(disk, 0); - mddev->changed = 1; if (mddev->ro) mddev->ro = 0; @@ -4593,20 +4599,6 @@ static int md_release(struct inode *inode, struct file * file) return 0; } -static int md_media_changed(struct gendisk *disk) -{ - mddev_t *mddev = disk->private_data; - - return mddev->changed; -} - -static int md_revalidate(struct gendisk *disk) -{ - mddev_t *mddev = disk->private_data; - - mddev->changed = 0; - return 0; -} static struct block_device_operations md_fops = { .owner = THIS_MODULE, @@ -4614,8 +4606,6 @@ static struct block_device_operations md_fops = .release = md_release, .ioctl = md_ioctl, .getgeo = md_getgeo, - .media_changed = md_media_changed, - .revalidate_disk= md_revalidate, }; static int md_thread(void * arg) diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index 97ee870b265d..1b7130cad21f 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -2063,7 +2063,6 @@ static int raid1_resize(mddev_t *mddev, sector_t sectors) */ mddev->array_size = sectors>>1; set_capacity(mddev->gendisk, mddev->array_size << 1); - mddev->changed = 1; if (mddev->array_size > mddev->size && mddev->recovery_cp == MaxSector) { mddev->recovery_cp = mddev->size << 1; set_bit(MD_RECOVERY_NEEDED, &mddev->recovery); diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 061375ee6592..a72e70ad0975 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -3864,7 +3864,6 @@ static int raid5_resize(mddev_t *mddev, sector_t sectors) sectors &= ~((sector_t)mddev->chunk_size/512 - 1); mddev->array_size = (sectors * (mddev->raid_disks-conf->max_degraded))>>1; set_capacity(mddev->gendisk, mddev->array_size << 1); - mddev->changed = 1; if (sectors/2 > mddev->size && mddev->recovery_cp == MaxSector) { mddev->recovery_cp = mddev->size << 1; set_bit(MD_RECOVERY_NEEDED, &mddev->recovery); @@ -3999,7 +3998,6 @@ static void end_reshape(raid5_conf_t *conf) conf->mddev->array_size = conf->mddev->size * (conf->raid_disks - conf->max_degraded); set_capacity(conf->mddev->gendisk, conf->mddev->array_size << 1); - conf->mddev->changed = 1; bdev = bdget_disk(conf->mddev->gendisk, 0); if (bdev) { |