diff options
Diffstat (limited to 'fs')
48 files changed, 527 insertions, 411 deletions
diff --git a/fs/btrfs/Kconfig b/fs/btrfs/Kconfig index 3282adc84d52..a25c9910d90b 100644 --- a/fs/btrfs/Kconfig +++ b/fs/btrfs/Kconfig @@ -31,7 +31,7 @@ config BTRFS_FS continue to be mountable and usable by newer kernels. For more information, please see the web pages at - http://btrfs.wiki.kernel.org. + https://btrfs.readthedocs.io To compile this file system support as a module, choose M here. The module will be called btrfs. diff --git a/fs/btrfs/block-group.c b/fs/btrfs/block-group.c index 0cb1dee965a0..b2e5107b7cec 100644 --- a/fs/btrfs/block-group.c +++ b/fs/btrfs/block-group.c @@ -3028,8 +3028,16 @@ static int update_block_group_item(struct btrfs_trans_handle *trans, btrfs_mark_buffer_dirty(leaf); fail: btrfs_release_path(path); - /* We didn't update the block group item, need to revert @commit_used. */ - if (ret < 0) { + /* + * We didn't update the block group item, need to revert commit_used + * unless the block group item didn't exist yet - this is to prevent a + * race with a concurrent insertion of the block group item, with + * insert_block_group_item(), that happened just after we attempted to + * update. In that case we would reset commit_used to 0 just after the + * insertion set it to a value greater than 0 - if the block group later + * becomes with 0 used bytes, we would incorrectly skip its update. + */ + if (ret < 0 && ret != -ENOENT) { spin_lock(&cache->lock); cache->commit_used = old_commit_used; spin_unlock(&cache->lock); diff --git a/fs/btrfs/delayed-inode.c b/fs/btrfs/delayed-inode.c index 53c1211dd60b..caf0bbd028d1 100644 --- a/fs/btrfs/delayed-inode.c +++ b/fs/btrfs/delayed-inode.c @@ -412,6 +412,7 @@ static void finish_one_item(struct btrfs_delayed_root *delayed_root) static void __btrfs_remove_delayed_item(struct btrfs_delayed_item *delayed_item) { + struct btrfs_delayed_node *delayed_node = delayed_item->delayed_node; struct rb_root_cached *root; struct btrfs_delayed_root *delayed_root; @@ -419,18 +420,21 @@ static void __btrfs_remove_delayed_item(struct btrfs_delayed_item *delayed_item) if (RB_EMPTY_NODE(&delayed_item->rb_node)) return; - delayed_root = delayed_item->delayed_node->root->fs_info->delayed_root; + /* If it's in a rbtree, then we need to have delayed node locked. */ + lockdep_assert_held(&delayed_node->mutex); + + delayed_root = delayed_node->root->fs_info->delayed_root; BUG_ON(!delayed_root); if (delayed_item->type == BTRFS_DELAYED_INSERTION_ITEM) - root = &delayed_item->delayed_node->ins_root; + root = &delayed_node->ins_root; else - root = &delayed_item->delayed_node->del_root; + root = &delayed_node->del_root; rb_erase_cached(&delayed_item->rb_node, root); RB_CLEAR_NODE(&delayed_item->rb_node); - delayed_item->delayed_node->count--; + delayed_node->count--; finish_one_item(delayed_root); } @@ -1153,20 +1157,33 @@ static int __btrfs_run_delayed_items(struct btrfs_trans_handle *trans, int nr) ret = __btrfs_commit_inode_delayed_items(trans, path, curr_node); if (ret) { - btrfs_release_delayed_node(curr_node); - curr_node = NULL; btrfs_abort_transaction(trans, ret); break; } prev_node = curr_node; curr_node = btrfs_next_delayed_node(curr_node); + /* + * See the comment below about releasing path before releasing + * node. If the commit of delayed items was successful the path + * should always be released, but in case of an error, it may + * point to locked extent buffers (a leaf at the very least). + */ + ASSERT(path->nodes[0] == NULL); btrfs_release_delayed_node(prev_node); } + /* + * Release the path to avoid a potential deadlock and lockdep splat when + * releasing the delayed node, as that requires taking the delayed node's + * mutex. If another task starts running delayed items before we take + * the mutex, it will first lock the mutex and then it may try to lock + * the same btree path (leaf). + */ + btrfs_free_path(path); + if (curr_node) btrfs_release_delayed_node(curr_node); - btrfs_free_path(path); trans->block_rsv = block_rsv; return ret; @@ -1413,7 +1430,29 @@ void btrfs_balance_delayed_items(struct btrfs_fs_info *fs_info) btrfs_wq_run_delayed_node(delayed_root, fs_info, BTRFS_DELAYED_BATCH); } -/* Will return 0 or -ENOMEM */ +static void btrfs_release_dir_index_item_space(struct btrfs_trans_handle *trans) +{ + struct btrfs_fs_info *fs_info = trans->fs_info; + const u64 bytes = btrfs_calc_insert_metadata_size(fs_info, 1); + + if (test_bit(BTRFS_FS_LOG_RECOVERING, &fs_info->flags)) + return; + + /* + * Adding the new dir index item does not require touching another + * leaf, so we can release 1 unit of metadata that was previously + * reserved when starting the transaction. This applies only to + * the case where we had a transaction start and excludes the + * transaction join case (when replaying log trees). + */ + trace_btrfs_space_reservation(fs_info, "transaction", + trans->transid, bytes, 0); + btrfs_block_rsv_release(fs_info, trans->block_rsv, bytes, NULL); + ASSERT(trans->bytes_reserved >= bytes); + trans->bytes_reserved -= bytes; +} + +/* Will return 0, -ENOMEM or -EEXIST (index number collision, unexpected). */ int btrfs_insert_delayed_dir_index(struct btrfs_trans_handle *trans, const char *name, int name_len, struct btrfs_inode *dir, @@ -1455,6 +1494,27 @@ int btrfs_insert_delayed_dir_index(struct btrfs_trans_handle *trans, mutex_lock(&delayed_node->mutex); + /* + * First attempt to insert the delayed item. This is to make the error + * handling path simpler in case we fail (-EEXIST). There's no risk of + * any other task coming in and running the delayed item before we do + * the metadata space reservation below, because we are holding the + * delayed node's mutex and that mutex must also be locked before the + * node's delayed items can be run. + */ + ret = __btrfs_add_delayed_item(delayed_node, delayed_item); + if (unlikely(ret)) { + btrfs_err(trans->fs_info, +"error adding delayed dir index item, name: %.*s, index: %llu, root: %llu, dir: %llu, dir->index_cnt: %llu, delayed_node->index_cnt: %llu, error: %d", + name_len, name, index, btrfs_root_id(delayed_node->root), + delayed_node->inode_id, dir->index_cnt, + delayed_node->index_cnt, ret); + btrfs_release_delayed_item(delayed_item); + btrfs_release_dir_index_item_space(trans); + mutex_unlock(&delayed_node->mutex); + goto release_node; + } + if (delayed_node->index_item_leaves == 0 || delayed_node->curr_index_batch_size + data_len > leaf_data_size) { delayed_node->curr_index_batch_size = data_len; @@ -1472,36 +1532,14 @@ int btrfs_insert_delayed_dir_index(struct btrfs_trans_handle *trans, * impossible. */ if (WARN_ON(ret)) { - mutex_unlock(&delayed_node->mutex); btrfs_release_delayed_item(delayed_item); + mutex_unlock(&delayed_node->mutex); goto release_node; } delayed_node->index_item_leaves++; - } else if (!test_bit(BTRFS_FS_LOG_RECOVERING, &fs_info->flags)) { - const u64 bytes = btrfs_calc_insert_metadata_size(fs_info, 1); - - /* - * Adding the new dir index item does not require touching another - * leaf, so we can release 1 unit of metadata that was previously - * reserved when starting the transaction. This applies only to - * the case where we had a transaction start and excludes the - * transaction join case (when replaying log trees). - */ - trace_btrfs_space_reservation(fs_info, "transaction", - trans->transid, bytes, 0); - btrfs_block_rsv_release(fs_info, trans->block_rsv, bytes, NULL); - ASSERT(trans->bytes_reserved >= bytes); - trans->bytes_reserved -= bytes; - } - - ret = __btrfs_add_delayed_item(delayed_node, delayed_item); - if (unlikely(ret)) { - btrfs_err(trans->fs_info, - "err add delayed dir index item(name: %.*s) into the insertion tree of the delayed node(root id: %llu, inode id: %llu, errno: %d)", - name_len, name, delayed_node->root->root_key.objectid, - delayed_node->inode_id, ret); - BUG(); + } else { + btrfs_release_dir_index_item_space(trans); } mutex_unlock(&delayed_node->mutex); diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 0a96ea8c1d3a..68f60d50e1fd 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -520,6 +520,7 @@ static bool btree_dirty_folio(struct address_space *mapping, struct folio *folio) { struct btrfs_fs_info *fs_info = btrfs_sb(mapping->host->i_sb); + struct btrfs_subpage_info *spi = fs_info->subpage_info; struct btrfs_subpage *subpage; struct extent_buffer *eb; int cur_bit = 0; @@ -533,18 +534,19 @@ static bool btree_dirty_folio(struct address_space *mapping, btrfs_assert_tree_write_locked(eb); return filemap_dirty_folio(mapping, folio); } + + ASSERT(spi); subpage = folio_get_private(folio); - ASSERT(subpage->dirty_bitmap); - while (cur_bit < BTRFS_SUBPAGE_BITMAP_SIZE) { + for (cur_bit = spi->dirty_offset; + cur_bit < spi->dirty_offset + spi->bitmap_nr_bits; + cur_bit++) { unsigned long flags; u64 cur; - u16 tmp = (1 << cur_bit); spin_lock_irqsave(&subpage->lock, flags); - if (!(tmp & subpage->dirty_bitmap)) { + if (!test_bit(cur_bit, subpage->bitmaps)) { spin_unlock_irqrestore(&subpage->lock, flags); - cur_bit++; continue; } spin_unlock_irqrestore(&subpage->lock, flags); @@ -557,7 +559,7 @@ static bool btree_dirty_folio(struct address_space *mapping, btrfs_assert_tree_write_locked(eb); free_extent_buffer(eb); - cur_bit += (fs_info->nodesize >> fs_info->sectorsize_bits); + cur_bit += (fs_info->nodesize >> fs_info->sectorsize_bits) - 1; } return filemap_dirty_folio(mapping, folio); } @@ -1547,7 +1549,7 @@ static int transaction_kthread(void *arg) delta = ktime_get_seconds() - cur->start_time; if (!test_and_clear_bit(BTRFS_FS_COMMIT_TRANS, &fs_info->flags) && - cur->state < TRANS_STATE_COMMIT_START && + cur->state < TRANS_STATE_COMMIT_PREP && delta < fs_info->commit_interval) { spin_unlock(&fs_info->trans_lock); delay -= msecs_to_jiffies((delta - 1) * 1000); @@ -2682,8 +2684,8 @@ void btrfs_init_fs_info(struct btrfs_fs_info *fs_info) btrfs_lockdep_init_map(fs_info, btrfs_trans_num_extwriters); btrfs_lockdep_init_map(fs_info, btrfs_trans_pending_ordered); btrfs_lockdep_init_map(fs_info, btrfs_ordered_extent); - btrfs_state_lockdep_init_map(fs_info, btrfs_trans_commit_start, - BTRFS_LOCKDEP_TRANS_COMMIT_START); + btrfs_state_lockdep_init_map(fs_info, btrfs_trans_commit_prep, + BTRFS_LOCKDEP_TRANS_COMMIT_PREP); btrfs_state_lockdep_init_map(fs_info, btrfs_trans_unblocked, BTRFS_LOCKDEP_TRANS_UNBLOCKED); btrfs_state_lockdep_init_map(fs_info, btrfs_trans_super_committed, @@ -4870,7 +4872,7 @@ static int btrfs_cleanup_transaction(struct btrfs_fs_info *fs_info) while (!list_empty(&fs_info->trans_list)) { t = list_first_entry(&fs_info->trans_list, struct btrfs_transaction, list); - if (t->state >= TRANS_STATE_COMMIT_START) { + if (t->state >= TRANS_STATE_COMMIT_PREP) { refcount_inc(&t->use_count); spin_unlock(&fs_info->trans_lock); btrfs_wait_for_commit(fs_info, t->transid); diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index ac3fca5a5e41..6954ae763b86 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -484,10 +484,8 @@ static void end_bio_extent_writepage(struct btrfs_bio *bbio) bvec->bv_offset, bvec->bv_len); btrfs_finish_ordered_extent(bbio->ordered, page, start, len, !error); - if (error) { - btrfs_page_clear_uptodate(fs_info, page, start, len); + if (error) mapping_set_error(page->mapping, error); - } btrfs_page_clear_writeback(fs_info, page, start, len); } @@ -1456,8 +1454,6 @@ done: if (ret) { btrfs_mark_ordered_io_finished(BTRFS_I(inode), page, page_start, PAGE_SIZE, !ret); - btrfs_page_clear_uptodate(btrfs_sb(inode->i_sb), page, - page_start, PAGE_SIZE); mapping_set_error(page->mapping, ret); } unlock_page(page); @@ -1624,8 +1620,6 @@ static void extent_buffer_write_end_io(struct btrfs_bio *bbio) struct page *page = bvec->bv_page; u32 len = bvec->bv_len; - if (!uptodate) - btrfs_page_clear_uptodate(fs_info, page, start, len); btrfs_page_clear_writeback(fs_info, page, start, len); bio_offset += len; } @@ -2201,7 +2195,6 @@ void extent_write_locked_range(struct inode *inode, struct page *locked_page, if (ret) { btrfs_mark_ordered_io_finished(BTRFS_I(inode), page, cur, cur_len, !ret); - btrfs_page_clear_uptodate(fs_info, page, cur, cur_len); mapping_set_error(page->mapping, ret); } btrfs_page_unlock_writer(fs_info, page, cur, cur_len); diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index ca46a529d56b..361535c71c0f 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -1106,6 +1106,25 @@ void btrfs_check_nocow_unlock(struct btrfs_inode *inode) btrfs_drew_write_unlock(&inode->root->snapshot_lock); } +static void update_time_for_write(struct inode *inode) +{ + struct timespec64 now, ctime; + + if (IS_NOCMTIME(inode)) + return; + + now = current_time(inode); + if (!timespec64_equal(&inode->i_mtime, &now)) + inode->i_mtime = now; + + ctime = inode_get_ctime(inode); + if (!timespec64_equal(&ctime, &now)) + inode_set_ctime_to_ts(inode, now); + + if (IS_I_VERSION(inode)) + inode_inc_iversion(inode); +} + static int btrfs_write_check(struct kiocb *iocb, struct iov_iter *from, size_t count) { @@ -1137,10 +1156,7 @@ static int btrfs_write_check(struct kiocb *iocb, struct iov_iter *from, * need to start yet another transaction to update the inode as we will * update the inode when we finish writing whatever data we write. */ - if (!IS_NOCMTIME(inode)) { - inode->i_mtime = inode_set_ctime_current(inode); - inode_inc_iversion(inode); - } + update_time_for_write(inode); start_pos = round_down(pos, fs_info->sectorsize); oldsize = i_size_read(inode); @@ -1451,8 +1467,13 @@ static ssize_t btrfs_direct_write(struct kiocb *iocb, struct iov_iter *from) if (iocb->ki_flags & IOCB_NOWAIT) ilock_flags |= BTRFS_ILOCK_TRY; - /* If the write DIO is within EOF, use a shared lock */ - if (iocb->ki_pos + iov_iter_count(from) <= i_size_read(inode)) + /* + * If the write DIO is within EOF, use a shared lock and also only if + * security bits will likely not be dropped by file_remove_privs() called + * from btrfs_write_check(). Either will need to be rechecked after the + * lock was acquired. + */ + if (iocb->ki_pos + iov_iter_count(from) <= i_size_read(inode) && IS_NOSEC(inode)) ilock_flags |= BTRFS_ILOCK_SHARED; relock: @@ -1460,6 +1481,13 @@ relock: if (err < 0) return err; + /* Shared lock cannot be used with security bits set. */ + if ((ilock_flags & BTRFS_ILOCK_SHARED) && !IS_NOSEC(inode)) { + btrfs_inode_unlock(BTRFS_I(inode), ilock_flags); + ilock_flags &= ~BTRFS_ILOCK_SHARED; + goto relock; + } + err = generic_write_checks(iocb, from); if (err <= 0) { btrfs_inode_unlock(BTRFS_I(inode), ilock_flags); diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index f09fbdc43f0f..7814b9d654ce 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -1085,9 +1085,6 @@ static void submit_uncompressed_range(struct btrfs_inode *inode, btrfs_mark_ordered_io_finished(inode, locked_page, page_start, PAGE_SIZE, !ret); - btrfs_page_clear_uptodate(inode->root->fs_info, - locked_page, page_start, - PAGE_SIZE); mapping_set_error(locked_page->mapping, ret); unlock_page(locked_page); } @@ -2791,7 +2788,6 @@ out_page: mapping_set_error(page->mapping, ret); btrfs_mark_ordered_io_finished(inode, page, page_start, PAGE_SIZE, !ret); - btrfs_page_clear_uptodate(fs_info, page, page_start, PAGE_SIZE); clear_page_dirty_for_io(page); } btrfs_page_clear_checked(fs_info, page, page_start, PAGE_SIZE); @@ -5769,20 +5765,24 @@ out: static int btrfs_get_dir_last_index(struct btrfs_inode *dir, u64 *index) { - if (dir->index_cnt == (u64)-1) { - int ret; + int ret = 0; + btrfs_inode_lock(dir, 0); + if (dir->index_cnt == (u64)-1) { ret = btrfs_inode_delayed_dir_index_count(dir); if (ret) { ret = btrfs_set_inode_index_count(dir); if (ret) - return ret; + goto out; } } - *index = dir->index_cnt; + /* index_cnt is the index number of next new entry, so decrement it. */ + *index = dir->index_cnt - 1; +out: + btrfs_inode_unlock(dir, 0); - return 0; + return ret; } /* @@ -5817,6 +5817,19 @@ static int btrfs_opendir(struct inode *inode, struct file *file) return 0; } +static loff_t btrfs_dir_llseek(struct file *file, loff_t offset, int whence) +{ + struct btrfs_file_private *private = file->private_data; + int ret; + + ret = btrfs_get_dir_last_index(BTRFS_I(file_inode(file)), + &private->last_index); + if (ret) + return ret; + + return generic_file_llseek(file, offset, whence); +} + struct dir_entry { u64 ino; u64 offset; @@ -10868,7 +10881,7 @@ static const struct inode_operations btrfs_dir_inode_operations = { }; static const struct file_operations btrfs_dir_file_operations = { - .llseek = generic_file_llseek, + .llseek = btrfs_dir_llseek, .read = generic_read_dir, .iterate_shared = btrfs_real_readdir, .open = btrfs_opendir, diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index a18ee7b5a166..75ab766fe156 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -1958,6 +1958,13 @@ static int btrfs_search_path_in_tree_user(struct mnt_idmap *idmap, goto out_put; } + /* + * We don't need the path anymore, so release it and + * avoid deadlocks and lockdep warnings in case + * btrfs_iget() needs to lookup the inode from its root + * btree and lock the same leaf. + */ + btrfs_release_path(path); temp_inode = btrfs_iget(sb, key2.objectid, root); if (IS_ERR(temp_inode)) { ret = PTR_ERR(temp_inode); @@ -1978,7 +1985,6 @@ static int btrfs_search_path_in_tree_user(struct mnt_idmap *idmap, goto out_put; } - btrfs_release_path(path); key.objectid = key.offset; key.offset = (u64)-1; dirid = key.objectid; diff --git a/fs/btrfs/locking.h b/fs/btrfs/locking.h index edb9b4a0dba1..7d6ee1e609bf 100644 --- a/fs/btrfs/locking.h +++ b/fs/btrfs/locking.h @@ -79,7 +79,7 @@ enum btrfs_lock_nesting { }; enum btrfs_lockdep_trans_states { - BTRFS_LOCKDEP_TRANS_COMMIT_START, + BTRFS_LOCKDEP_TRANS_COMMIT_PREP, BTRFS_LOCKDEP_TRANS_UNBLOCKED, BTRFS_LOCKDEP_TRANS_SUPER_COMMITTED, BTRFS_LOCKDEP_TRANS_COMPLETED, diff --git a/fs/btrfs/ordered-data.c b/fs/btrfs/ordered-data.c index b46ab348e8e5..345c449d588c 100644 --- a/fs/btrfs/ordered-data.c +++ b/fs/btrfs/ordered-data.c @@ -639,7 +639,7 @@ void btrfs_remove_ordered_extent(struct btrfs_inode *btrfs_inode, refcount_inc(&trans->use_count); spin_unlock(&fs_info->trans_lock); - ASSERT(trans); + ASSERT(trans || BTRFS_FS_ERROR(fs_info)); if (trans) { if (atomic_dec_and_test(&trans->pending_ordered)) wake_up(&trans->pending_wait); diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 09bfe68d2ea3..cffdd6f7f8e8 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -2150,7 +2150,7 @@ static struct file_system_type btrfs_fs_type = { .name = "btrfs", .mount = btrfs_mount, .kill_sb = btrfs_kill_super, - .fs_flags = FS_REQUIRES_DEV | FS_BINARY_MOUNTDATA | FS_MGTIME, + .fs_flags = FS_REQUIRES_DEV | FS_BINARY_MOUNTDATA, }; static struct file_system_type btrfs_root_fs_type = { @@ -2158,8 +2158,7 @@ static struct file_system_type btrfs_root_fs_type = { .name = "btrfs", .mount = btrfs_mount_root, .kill_sb = btrfs_kill_super, - .fs_flags = FS_REQUIRES_DEV | FS_BINARY_MOUNTDATA | - FS_ALLOW_IDMAP | FS_MGTIME, + .fs_flags = FS_REQUIRES_DEV | FS_BINARY_MOUNTDATA | FS_ALLOW_IDMAP, }; MODULE_ALIAS_FS("btrfs"); diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c index 874e4394df86..0bf42dccb041 100644 --- a/fs/btrfs/transaction.c +++ b/fs/btrfs/transaction.c @@ -56,12 +56,17 @@ static struct kmem_cache *btrfs_trans_handle_cachep; * | Call btrfs_commit_transaction() on any trans handle attached to * | transaction N * V - * Transaction N [[TRANS_STATE_COMMIT_START]] + * Transaction N [[TRANS_STATE_COMMIT_PREP]] + * | + * | If there are simultaneous calls to btrfs_commit_transaction() one will win + * | the race and the rest will wait for the winner to commit the transaction. + * | + * | The winner will wait for previous running transaction to completely finish + * | if there is one. * | - * | Will wait for previous running transaction to completely finish if there - * | is one + * Transaction N [[TRANS_STATE_COMMIT_START]] * | - * | Then one of the following happes: + * | Then one of the following happens: * | - Wait for all other trans handle holders to release. * | The btrfs_commit_transaction() caller will do the commit work. * | - Wait for current transaction to be committed by others. @@ -112,6 +117,7 @@ static struct kmem_cache *btrfs_trans_handle_cachep; */ static const unsigned int btrfs_blocked_trans_types[TRANS_STATE_MAX] = { [TRANS_STATE_RUNNING] = 0U, + [TRANS_STATE_COMMIT_PREP] = 0U, [TRANS_STATE_COMMIT_START] = (__TRANS_START | __TRANS_ATTACH), [TRANS_STATE_COMMIT_DOING] = (__TRANS_START | __TRANS_ATTACH | @@ -1982,7 +1988,7 @@ void btrfs_commit_transaction_async(struct btrfs_trans_handle *trans) * Wait for the current transaction commit to start and block * subsequent transaction joins */ - btrfs_might_wait_for_state(fs_info, BTRFS_LOCKDEP_TRANS_COMMIT_START); + btrfs_might_wait_for_state(fs_info, BTRFS_LOCKDEP_TRANS_COMMIT_PREP); wait_event(fs_info->transaction_blocked_wait, cur_trans->state >= TRANS_STATE_COMMIT_START || TRANS_ABORTED(cur_trans)); @@ -2129,7 +2135,7 @@ static void add_pending_snapshot(struct btrfs_trans_handle *trans) return; lockdep_assert_held(&trans->fs_info->trans_lock); - ASSERT(cur_trans->state >= TRANS_STATE_COMMIT_START); + ASSERT(cur_trans->state >= TRANS_STATE_COMMIT_PREP); |