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authorNeilBrown <neilb@suse.de>2009-08-03 10:59:58 +1000
committerNeilBrown <neilb@suse.de>2009-08-03 10:59:58 +1000
commit449aad3e25358812c43afc60918c5ad3819488e7 (patch)
tree45fab3b82fc1ed06959537a0801319045cf4c102
parent64bd660b51b2da92e99a5e97349f6558349f11c5 (diff)
md: Use revalidate_disk to effect changes in size of device.
As revalidate_disk calls check_disk_size_change, it will cause any capacity change of a gendisk to be propagated to the blockdev inode. So use that instead of mucking about with locks and i_size_write. Also add a call to revalidate_disk in do_md_run and a few other places where the gendisk capacity is changed. Signed-off-by: NeilBrown <neilb@suse.de>
-rw-r--r--drivers/md/linear.c1
-rw-r--r--drivers/md/md.c28
-rw-r--r--drivers/md/raid1.c1
-rw-r--r--drivers/md/raid5.c12
4 files changed, 9 insertions, 33 deletions
diff --git a/drivers/md/linear.c b/drivers/md/linear.c
index 54c8677f1e5..5fe39c2a3d2 100644
--- a/drivers/md/linear.c
+++ b/drivers/md/linear.c
@@ -257,6 +257,7 @@ static int linear_add(mddev_t *mddev, mdk_rdev_t *rdev)
rcu_assign_pointer(mddev->private, newconf);
md_set_array_sectors(mddev, linear_size(mddev, 0, 0));
set_capacity(mddev->gendisk, mddev->array_sectors);
+ revalidate_disk(mddev->gendisk);
call_rcu(&oldconf->rcu, free_conf);
return 0;
}
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 52c988b072d..5b98bea4ff9 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -3741,17 +3741,8 @@ array_size_store(mddev_t *mddev, const char *buf, size_t len)
mddev->array_sectors = sectors;
set_capacity(mddev->gendisk, mddev->array_sectors);
- if (mddev->pers) {
- struct block_device *bdev = bdget_disk(mddev->gendisk, 0);
-
- if (bdev) {
- mutex_lock(&bdev->bd_inode->i_mutex);
- i_size_write(bdev->bd_inode,
- (loff_t)mddev->array_sectors << 9);
- mutex_unlock(&bdev->bd_inode->i_mutex);
- bdput(bdev);
- }
- }
+ if (mddev->pers)
+ revalidate_disk(mddev->gendisk);
return len;
}
@@ -4241,6 +4232,7 @@ static int do_md_run(mddev_t * mddev)
md_wakeup_thread(mddev->thread);
md_wakeup_thread(mddev->sync_thread); /* possibly kick off a reshape */
+ revalidate_disk(mddev->gendisk);
mddev->changed = 1;
md_new_event(mddev);
sysfs_notify_dirent(mddev->sysfs_state);
@@ -5139,18 +5131,8 @@ static int update_size(mddev_t *mddev, sector_t num_sectors)
return -ENOSPC;
}
rv = mddev->pers->resize(mddev, num_sectors);
- if (!rv) {
- struct block_device *bdev;
-
- bdev = bdget_disk(mddev->gendisk, 0);
- if (bdev) {
- mutex_lock(&bdev->bd_inode->i_mutex);
- i_size_write(bdev->bd_inode,
- (loff_t)mddev->array_sectors << 9);
- mutex_unlock(&bdev->bd_inode->i_mutex);
- bdput(bdev);
- }
- }
+ if (!rv)
+ revalidate_disk(mddev->gendisk);
return rv;
}
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 67e794d0097..8726fd7ebce 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -2134,6 +2134,7 @@ static int raid1_resize(mddev_t *mddev, sector_t sectors)
return -EINVAL;
set_capacity(mddev->gendisk, mddev->array_sectors);
mddev->changed = 1;
+ revalidate_disk(mddev->gendisk);
if (sectors > mddev->dev_sectors &&
mddev->recovery_cp == MaxSector) {
mddev->recovery_cp = mddev->dev_sectors;
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 2dc35b4c20a..2b521ee67df 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -4858,6 +4858,7 @@ static int raid5_resize(mddev_t *mddev, sector_t sectors)
return -EINVAL;
set_capacity(mddev->gendisk, mddev->array_sectors);
mddev->changed = 1;
+ revalidate_disk(mddev->gendisk);
if (sectors > mddev->dev_sectors && mddev->recovery_cp == MaxSector) {
mddev->recovery_cp = mddev->dev_sectors;
set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
@@ -5058,7 +5059,6 @@ static void end_reshape(raid5_conf_t *conf)
*/
static void raid5_finish_reshape(mddev_t *mddev)
{
- struct block_device *bdev;
raid5_conf_t *conf = mddev->private;
if (!test_bit(MD_RECOVERY_INTR, &mddev->recovery)) {
@@ -5067,15 +5067,7 @@ static void raid5_finish_reshape(mddev_t *mddev)
md_set_array_sectors(mddev, raid5_size(mddev, 0, 0));
set_capacity(mddev->gendisk, mddev->array_sectors);
mddev->changed = 1;
-
- bdev = bdget_disk(mddev->gendisk, 0);
- if (bdev) {
- mutex_lock(&bdev->bd_inode->i_mutex);
- i_size_write(bdev->bd_inode,
- (loff_t)mddev->array_sectors << 9);
- mutex_unlock(&bdev->bd_inode->i_mutex);
- bdput(bdev);
- }
+ revalidate_disk(mddev->gendisk);
} else {
int d;
mddev->degraded = conf->raid_disks;