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path: root/drivers/md/dm-thin.c
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Diffstat (limited to 'drivers/md/dm-thin.c')
-rw-r--r--drivers/md/dm-thin.c39
1 files changed, 25 insertions, 14 deletions
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
index faaf944597ab..7e84baccf0ad 100644
--- a/drivers/md/dm-thin.c
+++ b/drivers/md/dm-thin.c
@@ -1357,7 +1357,8 @@ static void process_deferred_bios(struct pool *pool)
bio_list_init(&pool->deferred_flush_bios);
spin_unlock_irqrestore(&pool->lock, flags);
- if (bio_list_empty(&bios) && !need_commit_due_to_time(pool))
+ if (bio_list_empty(&bios) &&
+ !(dm_pool_changed_this_transaction(pool->pmd) && need_commit_due_to_time(pool)))
return;
if (commit(pool)) {
@@ -1999,16 +2000,27 @@ static void metadata_low_callback(void *context)
dm_table_event(pool->ti->table);
}
-static sector_t get_metadata_dev_size(struct block_device *bdev)
+static sector_t get_dev_size(struct block_device *bdev)
+{
+ return i_size_read(bdev->bd_inode) >> SECTOR_SHIFT;
+}
+
+static void warn_if_metadata_device_too_big(struct block_device *bdev)
{
- sector_t metadata_dev_size = i_size_read(bdev->bd_inode) >> SECTOR_SHIFT;
+ sector_t metadata_dev_size = get_dev_size(bdev);
char buffer[BDEVNAME_SIZE];
- if (metadata_dev_size > THIN_METADATA_MAX_SECTORS_WARNING) {
+ if (metadata_dev_size > THIN_METADATA_MAX_SECTORS_WARNING)
DMWARN("Metadata device %s is larger than %u sectors: excess space will not be used.",
bdevname(bdev, buffer), THIN_METADATA_MAX_SECTORS);
- metadata_dev_size = THIN_METADATA_MAX_SECTORS_WARNING;
- }
+}
+
+static sector_t get_metadata_dev_size(struct block_device *bdev)
+{
+ sector_t metadata_dev_size = get_dev_size(bdev);
+
+ if (metadata_dev_size > THIN_METADATA_MAX_SECTORS)
+ metadata_dev_size = THIN_METADATA_MAX_SECTORS;
return metadata_dev_size;
}
@@ -2017,7 +2029,7 @@ static dm_block_t get_metadata_dev_size_in_blocks(struct block_device *bdev)
{
sector_t metadata_dev_size = get_metadata_dev_size(bdev);
- sector_div(metadata_dev_size, THIN_METADATA_BLOCK_SIZE >> SECTOR_SHIFT);
+ sector_div(metadata_dev_size, THIN_METADATA_BLOCK_SIZE);
return metadata_dev_size;
}
@@ -2095,12 +2107,7 @@ static int pool_ctr(struct dm_target *ti, unsigned argc, char **argv)
ti->error = "Error opening metadata block device";
goto out_unlock;
}
-
- /*
- * Run for the side-effect of possibly issuing a warning if the
- * device is too big.
- */
- (void) get_metadata_dev_size(metadata_dev->bdev);
+ warn_if_metadata_device_too_big(metadata_dev->bdev);
r = dm_get_device(ti, argv[1], FMODE_READ | FMODE_WRITE, &data_dev);
if (r) {
@@ -2287,6 +2294,7 @@ static int maybe_resize_metadata_dev(struct dm_target *ti, bool *need_commit)
return -EINVAL;
} else if (metadata_dev_size > sb_metadata_dev_size) {
+ warn_if_metadata_device_too_big(pool->md_dev);
DMINFO("%s: growing the metadata device from %llu to %llu blocks",
dm_device_name(pool->pool_md),
sb_metadata_dev_size, metadata_dev_size);
@@ -2894,6 +2902,7 @@ static int thin_ctr(struct dm_target *ti, unsigned argc, char **argv)
if (get_pool_mode(tc->pool) == PM_FAIL) {
ti->error = "Couldn't open thin device, Pool is in fail mode";
+ r = -EINVAL;
goto bad_thin_open;
}
@@ -2905,7 +2914,7 @@ static int thin_ctr(struct dm_target *ti, unsigned argc, char **argv)
r = dm_set_target_max_io_len(ti, tc->pool->sectors_per_block);
if (r)
- goto bad_thin_open;
+ goto bad_target_max_io_len;
ti->num_flush_bios = 1;
ti->flush_supported = true;
@@ -2926,6 +2935,8 @@ static int thin_ctr(struct dm_target *ti, unsigned argc, char **argv)
return 0;
+bad_target_max_io_len:
+ dm_pool_close_thin_device(tc->td);
bad_thin_open:
__pool_dec(tc->pool);
bad_pool_lookup: