diff options
Diffstat (limited to 'fs/btrfs/extent-tree.c')
-rw-r--r-- | fs/btrfs/extent-tree.c | 206 |
1 files changed, 130 insertions, 76 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index aff579d..343eb10 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -35,6 +35,7 @@ #include "free-space-cache.h" #include "math.h" #include "sysfs.h" +#include "qgroup.h" #undef SCRAMBLE_DELAYED_REFS @@ -80,7 +81,8 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans, u64 bytenr, u64 num_bytes, u64 parent, u64 root_objectid, u64 owner_objectid, u64 owner_offset, int refs_to_drop, - struct btrfs_delayed_extent_op *extra_op); + struct btrfs_delayed_extent_op *extra_op, + int no_quota); static void __run_delayed_extent_op(struct btrfs_delayed_extent_op *extent_op, struct extent_buffer *leaf, struct btrfs_extent_item *ei); @@ -93,7 +95,8 @@ static int alloc_reserved_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root, u64 parent, u64 root_objectid, u64 flags, struct btrfs_disk_key *key, - int level, struct btrfs_key *ins); + int level, struct btrfs_key *ins, + int no_quota); static int do_chunk_alloc(struct btrfs_trans_handle *trans, struct btrfs_root *extent_root, u64 flags, int force); @@ -1270,7 +1273,7 @@ fail: static noinline int remove_extent_data_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, struct btrfs_path *path, - int refs_to_drop) + int refs_to_drop, int *last_ref) { struct btrfs_key key; struct btrfs_extent_data_ref *ref1 = NULL; @@ -1306,6 +1309,7 @@ static noinline int remove_extent_data_ref(struct btrfs_trans_handle *trans, if (num_refs == 0) { ret = btrfs_del_item(trans, root, path); + *last_ref = 1; } else { if (key.type == BTRFS_EXTENT_DATA_REF_KEY) btrfs_set_extent_data_ref_count(leaf, ref1, num_refs); @@ -1763,7 +1767,8 @@ void update_inline_extent_backref(struct btrfs_root *root, struct btrfs_path *path, struct btrfs_extent_inline_ref *iref, int refs_to_mod, - struct btrfs_delayed_extent_op *extent_op) + struct btrfs_delayed_extent_op *extent_op, + int *last_ref) { struct extent_buffer *leaf; struct btrfs_extent_item *ei; @@ -1807,6 +1812,7 @@ void update_inline_extent_backref(struct btrfs_root *root, else btrfs_set_shared_data_ref_count(leaf, sref, refs); } else { + *last_ref = 1; size = btrfs_extent_inline_ref_size(type); item_size = btrfs_item_size_nr(leaf, path->slots[0]); ptr = (unsigned long)iref; @@ -1838,7 +1844,7 @@ int insert_inline_extent_backref(struct btrfs_trans_handle *trans, if (ret == 0) { BUG_ON(owner < BTRFS_FIRST_FREE_OBJECTID); update_inline_extent_backref(root, path, iref, - refs_to_add, extent_op); + refs_to_add, extent_op, NULL); } else if (ret == -ENOENT) { setup_inline_extent_backref(root, path, iref, parent, root_objectid, owner, offset, @@ -1871,17 +1877,19 @@ static int remove_extent_backref(struct btrfs_trans_handle *trans, struct btrfs_root *root, struct btrfs_path *path, struct btrfs_extent_inline_ref *iref, - int refs_to_drop, int is_data) + int refs_to_drop, int is_data, int *last_ref) { int ret = 0; BUG_ON(!is_data && refs_to_drop != 1); if (iref) { update_inline_extent_backref(root, path, iref, - -refs_to_drop, NULL); + -refs_to_drop, NULL, last_ref); } else if (is_data) { - ret = remove_extent_data_ref(trans, root, path, refs_to_drop); + ret = remove_extent_data_ref(trans, root, path, refs_to_drop, + last_ref); } else { + *last_ref = 1; ret = btrfs_del_item(trans, root, path); } return ret; @@ -1945,7 +1953,8 @@ static int btrfs_discard_extent(struct btrfs_root *root, u64 bytenr, int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, u64 bytenr, u64 num_bytes, u64 parent, - u64 root_objectid, u64 owner, u64 offset, int for_cow) + u64 root_objectid, u64 owner, u64 offset, + int no_quota) { int ret; struct btrfs_fs_info *fs_info = root->fs_info; @@ -1957,12 +1966,12 @@ int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, ret = btrfs_add_delayed_tree_ref(fs_info, trans, bytenr, num_bytes, parent, root_objectid, (int)owner, - BTRFS_ADD_DELAYED_REF, NULL, for_cow); + BTRFS_ADD_DELAYED_REF, NULL, no_quota); } else { ret = btrfs_add_delayed_data_ref(fs_info, trans, bytenr, num_bytes, parent, root_objectid, owner, offset, - BTRFS_ADD_DELAYED_REF, NULL, for_cow); + BTRFS_ADD_DELAYED_REF, NULL, no_quota); } return ret; } @@ -1972,31 +1981,64 @@ static int __btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, u64 bytenr, u64 num_bytes, u64 parent, u64 root_objectid, u64 owner, u64 offset, int refs_to_add, + int no_quota, struct btrfs_delayed_extent_op *extent_op) { + struct btrfs_fs_info *fs_info = root->fs_info; struct btrfs_path *path; struct extent_buffer *leaf; struct btrfs_extent_item *item; + struct btrfs_key key; u64 refs; int ret; + enum btrfs_qgroup_operation_type type = BTRFS_QGROUP_OPER_ADD_EXCL; path = btrfs_alloc_path(); if (!path) return -ENOMEM; + if (!is_fstree(root_objectid) || !root->fs_info->quota_enabled) + no_quota = 1; + path->reada = 1; path->leave_spinning = 1; /* this will setup the path even if it fails to insert the back ref */ - ret = insert_inline_extent_backref(trans, root->fs_info->extent_root, - path, bytenr, num_bytes, parent, + ret = insert_inline_extent_backref(trans, fs_info->extent_root, path, + bytenr, num_bytes, parent, root_objectid, owner, offset, refs_to_add, extent_op); - if (ret != -EAGAIN) + if ((ret < 0 && ret != -EAGAIN) || (!ret && no_quota)) goto out; + /* + * Ok we were able to insert an inline extent and it appears to be a new + * reference, deal with the qgroup accounting. + */ + if (!ret && !no_quota) { + ASSERT(root->fs_info->quota_enabled); + leaf = path->nodes[0]; + btrfs_item_key_to_cpu(leaf, &key, path->slots[0]); + item = btrfs_item_ptr(leaf, path->slots[0], + struct btrfs_extent_item); + if (btrfs_extent_refs(leaf, item) > (u64)refs_to_add) + type = BTRFS_QGROUP_OPER_ADD_SHARED; + btrfs_release_path(path); + ret = btrfs_qgroup_record_ref(trans, fs_info, root_objectid, + bytenr, num_bytes, type, 0); + goto out; + } + + /* + * Ok we had -EAGAIN which means we didn't have space to insert and + * inline extent ref, so just update the reference count and add a + * normal backref. + */ leaf = path->nodes[0]; + btrfs_item_key_to_cpu(leaf, &key, path->slots[0]); item = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_extent_item); refs = btrfs_extent_refs(leaf, item); + if (refs) + type = BTRFS_QGROUP_OPER_ADD_SHARED; btrfs_set_extent_refs(leaf, item, refs + refs_to_add); if (extent_op) __run_delayed_extent_op(extent_op, leaf, item); @@ -2004,9 +2046,15 @@ static int __btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, btrfs_mark_buffer_dirty(leaf); btrfs_release_path(path); + if (!no_quota) { + ret = btrfs_qgroup_record_ref(trans, fs_info, root_objectid, + bytenr, num_bytes, type, 0); + if (ret) + goto out; + } + path->reada = 1; path->leave_spinning = 1; - /* now insert the actual backref */ ret = insert_extent_backref(trans, root->fs_info->extent_root, path, bytenr, parent, root_objectid, @@ -2040,8 +2088,7 @@ static int run_delayed_data_ref(struct btrfs_trans_handle *trans, if (node->type == BTRFS_SHARED_DATA_REF_KEY) parent = ref->parent; - else - ref_root = ref->root; + ref_root = ref->root; if (node->action == BTRFS_ADD_DELAYED_REF && insert_reserved) { if (extent_op) @@ -2055,13 +2102,13 @@ static int run_delayed_data_ref(struct btrfs_trans_handle *trans, node->num_bytes, parent, ref_root, ref->objectid, ref->offset, node->ref_mod, - extent_op); + node->no_quota, extent_op); } else if (node->action == BTRFS_DROP_DELAYED_REF) { ret = __btrfs_free_extent(trans, root, node->bytenr, node->num_bytes, parent, ref_root, ref->objectid, ref->offset, node->ref_mod, - extent_op); + extent_op, node->no_quota); } else { BUG(); } @@ -2198,8 +2245,7 @@ static int run_delayed_tree_ref(struct btrfs_trans_handle *trans, if (node->type == BTRFS_SHARED_BLOCK_REF_KEY) parent = ref->parent; - else - ref_root = ref->root; + ref_root = ref->root; ins.objectid = node->bytenr; if (skinny_metadata) { @@ -2217,15 +2263,18 @@ static int run_delayed_tree_ref(struct btrfs_trans_handle *trans, parent, ref_root, extent_op->flags_to_set, &extent_op->key, - ref->level, &ins); + ref->level, &ins, + node->no_quota); } else if (node->action == BTRFS_ADD_DELAYED_REF) { ret = __btrfs_inc_extent_ref(trans, root, node->bytenr, node->num_bytes, parent, ref_root, - ref->level, 0, 1, extent_op); + ref->level, 0, 1, node->no_quota, + extent_op); } else if (node->action == BTRFS_DROP_DELAYED_REF) { ret = __btrfs_free_extent(trans, root, node->bytenr, node->num_bytes, parent, ref_root, - ref->level, 0, 1, extent_op); + ref->level, 0, 1, extent_op, + node->no_quota); } else { BUG(); } @@ -2573,42 +2622,6 @@ static u64 find_middle(struct rb_root *root) } #endif -int btrfs_delayed_refs_qgroup_accounting(struct btrfs_trans_handle *trans, - struct btrfs_fs_info *fs_info) -{ - struct qgroup_update *qgroup_update; - int ret = 0; - - if (list_empty(&trans->qgroup_ref_list) != - !trans->delayed_ref_elem.seq) { - /* list without seq or seq without list */ - btrfs_err(fs_info, - "qgroup accounting update error, list is%s empty, seq is %#x.%x", - list_empty(&trans->qgroup_ref_list) ? "" : " not", - (u32)(trans->delayed_ref_elem.seq >> 32), - (u32)trans->delayed_ref_elem.seq); - BUG(); - } - - if (!trans->delayed_ref_elem.seq) - return 0; - - while (!list_empty(&trans->qgroup_ref_list)) { - qgroup_update = list_first_entry(&trans->qgroup_ref_list, - struct qgroup_update, list); - list_del(&qgroup_update->list); - if (!ret) - ret = btrfs_qgroup_account_ref( - trans, fs_info, qgroup_update->node, - qgroup_update->extent_op); - kfree(qgroup_update); - } - - btrfs_put_tree_mod_seq(fs_info, &trans->delayed_ref_elem); - - return ret; -} - static inline u64 heads_to_leaves(struct btrfs_root *root, u64 heads) { u64 num_bytes; @@ -2697,8 +2710,6 @@ int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans, if (root == root->fs_info->extent_root) root = root->fs_info->tree_root; - btrfs_delayed_refs_qgroup_accounting(trans, root->fs_info); - delayed_refs = &trans->transaction->delayed_refs; if (count == 0) { count = atomic_read(&delayed_refs->num_entries) * 2; @@ -2757,6 +2768,9 @@ again: goto again; } out: + ret = btrfs_delayed_qgroup_accounting(trans, root->fs_info); + if (ret) + return ret; assert_qgroups_uptodate(trans); return 0; } @@ -2963,7 +2977,7 @@ out: static int __btrfs_mod_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, struct extent_buffer *buf, - int full_backref, int inc, int for_cow) + int full_backref, int inc, int no_quota) { u64 bytenr; u64 num_bytes; @@ -3013,7 +3027,7 @@ static int __btrfs_mod_ref(struct btrfs_trans_handle *trans, key.offset -= btrfs_file_extent_offset(buf, fi); ret = process_func(trans, root, bytenr, num_bytes, parent, ref_root, key.objectid, - key.offset, for_cow); + key.offset, no_quota); if (ret) goto fail; } else { @@ -3021,7 +3035,7 @@ static int __btrfs_mod_ref(struct btrfs_trans_handle *trans, num_bytes = btrfs_level_size(root, level - 1); ret = process_func(trans, root, bytenr, num_bytes, parent, ref_root, level - 1, 0, - for_cow); + no_quota); if (ret) goto fail; } @@ -3032,15 +3046,15 @@ fail: } int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, - struct extent_buffer *buf, int full_backref, int for_cow) + struct extent_buffer *buf, int full_backref, int no_quota) { - return __btrfs_mod_ref(trans, root, buf, full_backref, 1, for_cow); + return __btrfs_mod_ref(trans, root, buf, full_backref, 1, no_quota); } int btrfs_dec_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, - struct extent_buffer *buf, int full_backref, int for_cow) + struct extent_buffer *buf, int full_backref, int no_quota) { - return __btrfs_mod_ref(trans, root, buf, full_backref, 0, for_cow); + return __btrfs_mod_ref(trans, root, buf, full_backref, 0, no_quota); } static int write_one_cache_group(struct btrfs_trans_handle *trans, @@ -5723,7 +5737,8 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans, u64 bytenr, u64 num_bytes, u64 parent, u64 root_objectid, u64 owner_objectid, u64 owner_offset, int refs_to_drop, - struct btrfs_delayed_extent_op *extent_op) + struct btrfs_delayed_extent_op *extent_op, + int no_quota) { struct btrfs_key key; struct btrfs_path *path; @@ -5739,9 +5754,14 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans, int num_to_del = 1; u32 item_size; u64 refs; + int last_ref = 0; + enum btrfs_qgroup_operation_type type = BTRFS_QGROUP_OPER_SUB_EXCL; bool skinny_metadata = btrfs_fs_incompat(root->fs_info, SKINNY_METADATA); + if (!info->quota_enabled || !is_fstree(root_objectid)) + no_quota = 1; + path = btrfs_alloc_path(); if (!path) return -ENOMEM; @@ -5789,7 +5809,7 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans, BUG_ON(iref); ret = remove_extent_backref(trans, extent_root, path, NULL, refs_to_drop, - is_data); + is_data, &last_ref); if (ret) { btrfs_abort_transaction(trans, extent_root, ret); goto out; @@ -5916,6 +5936,7 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans, refs -= refs_to_drop; if (refs > 0) { + type = BTRFS_QGROUP_OPER_SUB_SHARED; if (extent_op) __run_delayed_extent_op(extent_op, leaf, ei); /* @@ -5931,7 +5952,7 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans, if (found_extent) { ret = remove_extent_backref(trans, extent_root, path, iref, refs_to_drop, - is_data); + is_data, &last_ref); if (ret) { btrfs_abort_transaction(trans, extent_root, ret); goto out; @@ -5952,6 +5973,7 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans, } } + last_ref = 1; ret = btrfs_del_items(trans, extent_root, path, path->slots[0], num_to_del); if (ret) { @@ -5974,6 +5996,20 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans, goto out; } } + btrfs_release_path(path); + + /* Deal with the quota accounting */ + if (!ret && last_ref && !no_quota) { + int mod_seq = 0; + + if (owner_objectid >= BTRFS_FIRST_FREE_OBJECTID && + type == BTRFS_QGROUP_OPER_SUB_SHARED) + mod_seq = 1; + + ret = btrfs_qgroup_record_ref(trans, info, root_objectid, + bytenr, num_bytes, type, + mod_seq); + } out: btrfs_free_path(path); return ret; @@ -6110,7 +6146,7 @@ out: /* Can return -ENOMEM */ int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_root *root, u64 bytenr, u64 num_bytes, u64 parent, u64 root_objectid, - u64 owner, u64 offset, int for_cow) + u64 owner, u64 offset, int no_quota) { int ret; struct btrfs_fs_info *fs_info = root->fs_info; @@ -6130,13 +6166,13 @@ int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_root *root, ret = btrfs_add_delayed_tree_ref(fs_info, trans, bytenr, num_bytes, parent, root_objectid, (int)owner, - BTRFS_DROP_DELAYED_REF, NULL, for_cow); + BTRFS_DROP_DELAYED_REF, NULL, no_quota); } else { ret = btrfs_add_delayed_data_ref(fs_info, trans, bytenr, num_bytes, parent, root_objectid, owner, offset, BTRFS_DROP_DELAYED_REF, - NULL, for_cow); + NULL, no_quota); } return ret; } @@ -6842,6 +6878,13 @@ static int alloc_reserved_file_extent(struct btrfs_trans_handle *trans, btrfs_mark_buffer_dirty(path->nodes[0]); btrfs_free_path(path); + /* Always set parent to 0 here since its exclusive anyway. */ + ret = btrfs_qgroup_record_ref(trans, fs_info, root_objectid, + ins->objectid, ins->offset, + BTRFS_QGROUP_OPER_ADD_EXCL, 0); + if (ret) + return ret; + ret = update_block_group(root, ins->objectid, ins->offset, 1); if (ret) { /* -ENOENT, logic error */ btrfs_err(fs_info, "update block group failed for %llu %llu", @@ -6856,7 +6899,8 @@ static int alloc_reserved_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root, u64 parent, u64 root_objectid, u64 flags, struct btrfs_disk_key *key, - int level, struct btrfs_key *ins) + int level, struct btrfs_key *ins, + int no_quota) { int ret; struct btrfs_fs_info *fs_info = root->fs_info; @@ -6866,6 +6910,7 @@ static int alloc_reserved_tree_block(struct btrfs_trans_handle *trans, struct btrfs_path *path; struct extent_buffer *leaf; u32 size = sizeof(*extent_item) + sizeof(*iref); + u64 num_bytes = ins->offset; bool skinny_metadata = btrfs_fs_incompat(root->fs_info, SKINNY_METADATA); @@ -6899,6 +6944,7 @@ static int alloc_reserved_tree_block(struct btrfs_trans_handle *trans, if (skinny_metadata) { iref = (struct btrfs_extent_inline_ref *)(extent_item + 1); + num_bytes = root->leafsize; } else { block_info = (struct btrfs_tree_block_info *)(extent_item + 1); btrfs_set_tree_block_key(leaf, block_info, key); @@ -6920,6 +6966,14 @@ static int alloc_reserved_tree_block(struct btrfs_trans_handle *trans, btrfs_mark_buffer_dirty(leaf); btrfs_free_path(path); + if (!no_quota) { + ret = btrfs_qgroup_record_ref(trans, fs_info, root_objectid, + ins->objectid, num_bytes, + BTRFS_QGROUP_OPER_ADD_EXCL, 0); + if (ret) + return ret; + } + ret = update_block_group(root, ins->objectid, root->leafsize, 1); if (ret) { /* -ENOENT, logic error */ btrfs_err(fs_info, "update block group failed for %llu %llu", |