* sure NOFS is set to keep us from deadlocking.
*/
nofs_flag = memalloc_nofs_save();
- inode = btrfs_iget_path(fs_info->sb, &location, root, path);
+ inode = btrfs_iget_path(fs_info->sb, location.objectid, root, path);
btrfs_release_path(path);
memalloc_nofs_restore(nofs_flag);
if (IS_ERR(inode))
if (ret) {
invalidate_inode_pages2(inode->i_mapping);
BTRFS_I(inode)->generation = 0;
- if (block_group) {
-#ifdef CONFIG_BTRFS_DEBUG
- btrfs_err(root->fs_info,
- "failed to write free space cache for block group %llu",
- block_group->start);
-#endif
- }
+ if (block_group)
+ btrfs_debug(root->fs_info,
+ "failed to write free space cache for block group %llu error %d",
+ block_group->start, ret);
}
btrfs_update_inode(trans, root, inode);
io_ctl_zero_remaining_pages(io_ctl);
/* Everything is written out, now we dirty the pages in the file. */
- ret = btrfs_dirty_pages(inode, io_ctl->pages, io_ctl->num_pages, 0,
- i_size_read(inode), &cached_state);
+ ret = btrfs_dirty_pages(BTRFS_I(inode), io_ctl->pages,
+ io_ctl->num_pages, 0, i_size_read(inode),
+ &cached_state);
if (ret)
goto out_nospc;
ret = __btrfs_write_out_cache(fs_info->tree_root, inode, ctl,
block_group, &block_group->io_ctl, trans);
if (ret) {
-#ifdef CONFIG_BTRFS_DEBUG
- btrfs_err(fs_info,
- "failed to write free space cache for block group %llu",
- block_group->start);
-#endif
+ btrfs_debug(fs_info,
+ "failed to write free space cache for block group %llu error %d",
+ block_group->start, ret);
spin_lock(&block_group->lock);
block_group->disk_cache_state = BTRFS_DC_ERROR;
spin_unlock(&block_group->lock);
static bool try_merge_free_space(struct btrfs_free_space_ctl *ctl,
struct btrfs_free_space *info, bool update_stat)
{
- struct btrfs_free_space *left_info;
+ struct btrfs_free_space *left_info = NULL;
struct btrfs_free_space *right_info;
bool merged = false;
u64 offset = info->offset;
if (right_info && rb_prev(&right_info->offset_index))
left_info = rb_entry(rb_prev(&right_info->offset_index),
struct btrfs_free_space, offset_index);
- else
+ else if (!right_info)
left_info = tree_search_offset(ctl, offset - 1, 0, 0);
/* See try_merge_free_space() comment. */
* pointed to by the cluster, someone else raced in and freed the
* cluster already. In that case, we just return without changing anything
*/
-static int
-__btrfs_return_cluster_to_free_space(
+static void __btrfs_return_cluster_to_free_space(
struct btrfs_block_group *block_group,
struct btrfs_free_cluster *cluster)
{
out:
spin_unlock(&cluster->lock);
btrfs_put_block_group(block_group);
- return 0;
}
static void __btrfs_remove_free_space_cache_locked(
* Otherwise, it'll get a reference on the block group pointed to by the
* cluster and remove the cluster from it.
*/
-int btrfs_return_cluster_to_free_space(
+void btrfs_return_cluster_to_free_space(
struct btrfs_block_group *block_group,
struct btrfs_free_cluster *cluster)
{
struct btrfs_free_space_ctl *ctl;
- int ret;
/* first, get a safe pointer to the block group */
spin_lock(&cluster->lock);
block_group = cluster->block_group;
if (!block_group) {
spin_unlock(&cluster->lock);
- return 0;
+ return;
}
} else if (cluster->block_group != block_group) {
/* someone else has already freed it don't redo their work */
spin_unlock(&cluster->lock);
- return 0;
+ return;
}
- atomic_inc(&block_group->count);
+ btrfs_get_block_group(block_group);
spin_unlock(&cluster->lock);
ctl = block_group->free_space_ctl;
/* now return any extents the cluster had on it */
spin_lock(&ctl->tree_lock);
- ret = __btrfs_return_cluster_to_free_space(block_group, cluster);
+ __btrfs_return_cluster_to_free_space(block_group, cluster);
spin_unlock(&ctl->tree_lock);
btrfs_discard_queue_work(&block_group->fs_info->discard_ctl, block_group);
/* finally drop our ref */
btrfs_put_block_group(block_group);
- return ret;
}
static u64 btrfs_alloc_from_bitmap(struct btrfs_block_group *block_group,
list_del_init(&entry->list);
if (!ret) {
- atomic_inc(&block_group->count);
+ btrfs_get_block_group(block_group);
list_add_tail(&cluster->block_group_list,
&block_group->cluster_list);
cluster->block_group = block_group;
return ret;
}
-void btrfs_get_block_group_trimming(struct btrfs_block_group *cache)
-{
- atomic_inc(&cache->trimming);
-}
-
-void btrfs_put_block_group_trimming(struct btrfs_block_group *block_group)
-{
- struct btrfs_fs_info *fs_info = block_group->fs_info;
- struct extent_map_tree *em_tree;
- struct extent_map *em;
- bool cleanup;
-
- spin_lock(&block_group->lock);
- cleanup = (atomic_dec_and_test(&block_group->trimming) &&
- block_group->removed);
- spin_unlock(&block_group->lock);
-
- if (cleanup) {
- mutex_lock(&fs_info->chunk_mutex);
- em_tree = &fs_info->mapping_tree;
- write_lock(&em_tree->lock);
- em = lookup_extent_mapping(em_tree, block_group->start,
- 1);
- BUG_ON(!em); /* logic error, can't happen */
- remove_extent_mapping(em_tree, em);
- write_unlock(&em_tree->lock);
- mutex_unlock(&fs_info->chunk_mutex);
-
- /* once for us and once for the tree */
- free_extent_map(em);
- free_extent_map(em);
-
- /*
- * We've left one free space entry and other tasks trimming
- * this block group have left 1 entry each one. Free them.
- */
- __btrfs_remove_free_space_cache(block_group->free_space_ctl);
- }
-}
-
int btrfs_trim_block_group(struct btrfs_block_group *block_group,
u64 *trimmed, u64 start, u64 end, u64 minlen)
{
spin_unlock(&block_group->lock);
return 0;
}
- btrfs_get_block_group_trimming(block_group);
+ btrfs_freeze_block_group(block_group);
spin_unlock(&block_group->lock);
ret = trim_no_bitmap(block_group, trimmed, start, end, minlen, false);
if (rem)
reset_trimming_bitmap(ctl, offset_to_bitmap(ctl, end));
out:
- btrfs_put_block_group_trimming(block_group);
+ btrfs_unfreeze_block_group(block_group);
return ret;
}
spin_unlock(&block_group->lock);
return 0;
}
- btrfs_get_block_group_trimming(block_group);
+ btrfs_freeze_block_group(block_group);
spin_unlock(&block_group->lock);
ret = trim_no_bitmap(block_group, trimmed, start, end, minlen, async);
- btrfs_put_block_group_trimming(block_group);
+ btrfs_unfreeze_block_group(block_group);
return ret;
}
spin_unlock(&block_group->lock);
return 0;
}
- btrfs_get_block_group_trimming(block_group);
+ btrfs_freeze_block_group(block_group);
spin_unlock(&block_group->lock);
ret = trim_bitmaps(block_group, trimmed, start, end, minlen, maxlen,
async);
- btrfs_put_block_group_trimming(block_group);
+ btrfs_unfreeze_block_group(block_group);
return ret;
}
if (release_metadata)
btrfs_delalloc_release_metadata(BTRFS_I(inode),
inode->i_size, true);
-#ifdef CONFIG_BTRFS_DEBUG
- btrfs_err(fs_info,
- "failed to write free ino cache for root %llu",
- root->root_key.objectid);
-#endif
+ btrfs_debug(fs_info,
+ "failed to write free ino cache for root %llu error %d",
+ root->root_key.objectid, ret);
}
return ret;
projects / linux-2.6-microblaze.git / blobdiff