static void btrfs_issue_discard(struct block_device *bdev,
u64 start, u64 len)
{
- blkdev_issue_discard(bdev, start >> 9, len >> 9, GFP_KERNEL,
- BLKDEV_IFL_WAIT | BLKDEV_IFL_BARRIER);
+ blkdev_issue_discard(bdev, start >> 9, len >> 9, GFP_KERNEL, 0);
}
static int btrfs_discard_extent(struct btrfs_root *root, u64 bytenr,
return btrfs_reduce_alloc_profile(root, flags);
}
-static u64 btrfs_get_alloc_profile(struct btrfs_root *root, int data)
+u64 btrfs_get_alloc_profile(struct btrfs_root *root, int data)
{
u64 flags;
return 0;
}
- WARN_ON(1);
- printk(KERN_INFO"block_rsv size %llu reserved %llu freed %llu %llu\n",
- block_rsv->size, block_rsv->reserved,
- block_rsv->freed[0], block_rsv->freed[1]);
-
return -ENOSPC;
}
return ret;
}
+/*
+ * helper to account the unused space of all the readonly block group in the
+ * list. takes mirrors into account.
+ */
+static u64 __btrfs_get_ro_block_group_free_space(struct list_head *groups_list)
+{
+ struct btrfs_block_group_cache *block_group;
+ u64 free_bytes = 0;
+ int factor;
+
+ list_for_each_entry(block_group, groups_list, list) {
+ spin_lock(&block_group->lock);
+
+ if (!block_group->ro) {
+ spin_unlock(&block_group->lock);
+ continue;
+ }
+
+ if (block_group->flags & (BTRFS_BLOCK_GROUP_RAID1 |
+ BTRFS_BLOCK_GROUP_RAID10 |
+ BTRFS_BLOCK_GROUP_DUP))
+ factor = 2;
+ else
+ factor = 1;
+
+ free_bytes += (block_group->key.offset -
+ btrfs_block_group_used(&block_group->item)) *
+ factor;
+
+ spin_unlock(&block_group->lock);
+ }
+
+ return free_bytes;
+}
+
+/*
+ * helper to account the unused space of all the readonly block group in the
+ * space_info. takes mirrors into account.
+ */
+u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo)
+{
+ int i;
+ u64 free_bytes = 0;
+
+ spin_lock(&sinfo->lock);
+
+ for(i = 0; i < BTRFS_NR_RAID_TYPES; i++)
+ if (!list_empty(&sinfo->block_groups[i]))
+ free_bytes += __btrfs_get_ro_block_group_free_space(
+ &sinfo->block_groups[i]);
+
+ spin_unlock(&sinfo->lock);
+
+ return free_bytes;
+}
+
int btrfs_set_block_group_rw(struct btrfs_root *root,
struct btrfs_block_group_cache *cache)
{
mutex_lock(&root->fs_info->chunk_mutex);
list_for_each_entry(device, &fs_devices->alloc_list, dev_alloc_list) {
u64 min_free = btrfs_block_group_used(&block_group->item);
- u64 dev_offset, max_avail;
+ u64 dev_offset;
/*
* check to make sure we can actually find a chunk with enough
*/
if (device->total_bytes > device->bytes_used + min_free) {
ret = find_free_dev_extent(NULL, device, min_free,
- &dev_offset, &max_avail);
+ &dev_offset, NULL);
if (!ret)
break;
ret = -1;
btrfs_free_path(path);
return ret;
}
+
+int btrfs_error_unpin_extent_range(struct btrfs_root *root, u64 start, u64 end)
+{
+ return unpin_extent_range(root, start, end);
+}
+
+int btrfs_error_discard_extent(struct btrfs_root *root, u64 bytenr,
+ u64 num_bytes)
+{
+ return btrfs_discard_extent(root, bytenr, num_bytes);
+}