diff options
Diffstat (limited to 'fs/btrfs/inode.c')
| -rw-r--r-- | fs/btrfs/inode.c | 78 |
1 files changed, 72 insertions, 6 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index db3dd4ed057..dce9e218b84 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -71,6 +71,7 @@ static const struct file_operations btrfs_dir_file_operations; static struct extent_io_ops btrfs_extent_io_ops; static struct kmem_cache *btrfs_inode_cachep; +static struct kmem_cache *btrfs_delalloc_work_cachep; struct kmem_cache *btrfs_trans_handle_cachep; struct kmem_cache *btrfs_transaction_cachep; struct kmem_cache *btrfs_path_cachep; @@ -7204,6 +7205,8 @@ void btrfs_destroy_cachep(void) kmem_cache_destroy(btrfs_path_cachep); if (btrfs_free_space_cachep) kmem_cache_destroy(btrfs_free_space_cachep); + if (btrfs_delalloc_work_cachep) + kmem_cache_destroy(btrfs_delalloc_work_cachep); } int btrfs_init_cachep(void) @@ -7238,6 +7241,13 @@ int btrfs_init_cachep(void) if (!btrfs_free_space_cachep) goto fail; + btrfs_delalloc_work_cachep = kmem_cache_create("btrfs_delalloc_work", + sizeof(struct btrfs_delalloc_work), 0, + SLAB_RECLAIM_ACCOUNT | SLAB_MEM_SPREAD, + NULL); + if (!btrfs_delalloc_work_cachep) + goto fail; + return 0; fail: btrfs_destroy_cachep(); @@ -7448,6 +7458,49 @@ out_notrans: return ret; } +static void btrfs_run_delalloc_work(struct btrfs_work *work) +{ + struct btrfs_delalloc_work *delalloc_work; + + delalloc_work = container_of(work, struct btrfs_delalloc_work, + work); + if (delalloc_work->wait) + btrfs_wait_ordered_range(delalloc_work->inode, 0, (u64)-1); + else + filemap_flush(delalloc_work->inode->i_mapping); + + if (delalloc_work->delay_iput) + btrfs_add_delayed_iput(delalloc_work->inode); + else + iput(delalloc_work->inode); + complete(&delalloc_work->completion); +} + +struct btrfs_delalloc_work *btrfs_alloc_delalloc_work(struct inode *inode, + int wait, int delay_iput) +{ + struct btrfs_delalloc_work *work; + + work = kmem_cache_zalloc(btrfs_delalloc_work_cachep, GFP_NOFS); + if (!work) + return NULL; + + init_completion(&work->completion); + INIT_LIST_HEAD(&work->list); + work->inode = inode; + work->wait = wait; + work->delay_iput = delay_iput; + work->work.func = btrfs_run_delalloc_work; + + return work; +} + +void btrfs_wait_and_free_delalloc_work(struct btrfs_delalloc_work *work) +{ + wait_for_completion(&work->completion); + kmem_cache_free(btrfs_delalloc_work_cachep, work); +} + /* * some fairly slow code that needs optimization. This walks the list * of all the inodes with pending delalloc and forces them to disk. @@ -7457,10 +7510,15 @@ int btrfs_start_delalloc_inodes(struct btrfs_root *root, int delay_iput) struct list_head *head = &root->fs_info->delalloc_inodes; struct btrfs_inode *binode; struct inode *inode; + struct btrfs_delalloc_work *work, *next; + struct list_head works; + int ret = 0; if (root->fs_info->sb->s_flags & MS_RDONLY) return -EROFS; + INIT_LIST_HEAD(&works); + spin_lock(&root->fs_info->delalloc_lock); while (!list_empty(head)) { binode = list_entry(head->next, struct btrfs_inode, @@ -7470,11 +7528,14 @@ int btrfs_start_delalloc_inodes(struct btrfs_root *root, int delay_iput) list_del_init(&binode->delalloc_inodes); spin_unlock(&root->fs_info->delalloc_lock); if (inode) { - filemap_flush(inode->i_mapping); - if (delay_iput) - btrfs_add_delayed_iput(inode); - else - iput(inode); + work = btrfs_alloc_delalloc_work(inode, 0, delay_iput); + if (!work) { + ret = -ENOMEM; + goto out; + } + list_add_tail(&work->list, &works); + btrfs_queue_worker(&root->fs_info->flush_workers, + &work->work); } cond_resched(); spin_lock(&root->fs_info->delalloc_lock); @@ -7493,7 +7554,12 @@ int btrfs_start_delalloc_inodes(struct btrfs_root *root, int delay_iput) atomic_read(&root->fs_info->async_delalloc_pages) == 0)); } atomic_dec(&root->fs_info->async_submit_draining); - return 0; +out: + list_for_each_entry_safe(work, next, &works, list) { + list_del_init(&work->list); + btrfs_wait_and_free_delalloc_work(work); + } + return ret; } static int btrfs_symlink(struct inode *dir, struct dentry *dentry, |