diff options
Diffstat (limited to 'fs/btrfs/volumes.c')
| -rw-r--r-- | fs/btrfs/volumes.c | 845 |
1 files changed, 413 insertions, 432 deletions
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 0d7d635d8bfb..3c3c69c0eee4 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -134,9 +134,9 @@ const int btrfs_raid_mindev_error[BTRFS_NR_RAID_TYPES] = { }; static int init_first_rw_device(struct btrfs_trans_handle *trans, - struct btrfs_root *root, + struct btrfs_fs_info *fs_info, struct btrfs_device *device); -static int btrfs_relocate_sys_chunks(struct btrfs_root *root); +static int btrfs_relocate_sys_chunks(struct btrfs_fs_info *fs_info); static void __btrfs_reset_dev_stats(struct btrfs_device *dev); static void btrfs_dev_stat_print_on_error(struct btrfs_device *dev); static void btrfs_dev_stat_print_on_load(struct btrfs_device *device); @@ -343,9 +343,9 @@ static void requeue_list(struct btrfs_pending_bios *pending_bios, */ static noinline void run_scheduled_bios(struct btrfs_device *device) { + struct btrfs_fs_info *fs_info = device->fs_info; struct bio *pending; struct backing_dev_info *bdi; - struct btrfs_fs_info *fs_info; struct btrfs_pending_bios *pending_bios; struct bio *tail; struct bio *cur; @@ -367,7 +367,6 @@ static noinline void run_scheduled_bios(struct btrfs_device *device) blk_start_plug(&plug); bdi = blk_get_backing_dev_info(device->bdev); - fs_info = device->dev_root->fs_info; limit = btrfs_async_submit_limit(fs_info); limit = limit * 2 / 3; @@ -1179,7 +1178,7 @@ int btrfs_account_dev_extents_size(struct btrfs_device *device, u64 start, u64 end, u64 *length) { struct btrfs_key key; - struct btrfs_root *root = device->dev_root; + struct btrfs_root *root = device->fs_info->dev_root; struct btrfs_dev_extent *dev_extent; struct btrfs_path *path; u64 extent_end; @@ -1262,7 +1261,7 @@ static int contains_pending_extent(struct btrfs_transaction *transaction, struct btrfs_device *device, u64 *start, u64 len) { - struct btrfs_fs_info *fs_info = device->dev_root->fs_info; + struct btrfs_fs_info *fs_info = device->fs_info; struct extent_map *em; struct list_head *search_list = &fs_info->pinned_chunks; int ret = 0; @@ -1338,8 +1337,9 @@ int find_free_dev_extent_start(struct btrfs_transaction *transaction, struct btrfs_device *device, u64 num_bytes, u64 search_start, u64 *start, u64 *len) { + struct btrfs_fs_info *fs_info = device->fs_info; + struct btrfs_root *root = fs_info->dev_root; struct btrfs_key key; - struct btrfs_root *root = device->dev_root; struct btrfs_dev_extent *dev_extent; struct btrfs_path *path; u64 hole_size; @@ -1357,7 +1357,7 @@ int find_free_dev_extent_start(struct btrfs_transaction *transaction, * used by the boot loader (grub for example), so we make sure to start * at an offset of at least 1MB. */ - min_search_start = max(root->fs_info->alloc_start, 1024ull * 1024); + min_search_start = max(fs_info->alloc_start, 1024ull * 1024); search_start = max(search_start, min_search_start); path = btrfs_alloc_path(); @@ -1508,9 +1508,10 @@ static int btrfs_free_dev_extent(struct btrfs_trans_handle *trans, struct btrfs_device *device, u64 start, u64 *dev_extent_len) { + struct btrfs_fs_info *fs_info = device->fs_info; + struct btrfs_root *root = fs_info->dev_root; int ret; struct btrfs_path *path; - struct btrfs_root *root = device->dev_root; struct btrfs_key key; struct btrfs_key found_key; struct extent_buffer *leaf = NULL; @@ -1544,7 +1545,7 @@ again: extent = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_dev_extent); } else { - btrfs_handle_fs_error(root->fs_info, ret, "Slot search failed"); + btrfs_handle_fs_error(fs_info, ret, "Slot search failed"); goto out; } @@ -1552,8 +1553,8 @@ again: ret = btrfs_del_item(trans, root, path); if (ret) { - btrfs_handle_fs_error(root->fs_info, ret, - "Failed to remove dev extent item"); + btrfs_handle_fs_error(fs_info, ret, + "Failed to remove dev extent item"); } else { set_bit(BTRFS_TRANS_HAVE_FREE_BGS, &trans->transaction->flags); } @@ -1569,7 +1570,8 @@ static int btrfs_alloc_dev_extent(struct btrfs_trans_handle *trans, { int ret; struct btrfs_path *path; - struct btrfs_root *root = device->dev_root; + struct btrfs_fs_info *fs_info = device->fs_info; + struct btrfs_root *root = fs_info->dev_root; struct btrfs_dev_extent *extent; struct extent_buffer *leaf; struct btrfs_key key; @@ -1595,8 +1597,7 @@ static int btrfs_alloc_dev_extent(struct btrfs_trans_handle *trans, btrfs_set_dev_extent_chunk_objectid(leaf, extent, chunk_objectid); btrfs_set_dev_extent_chunk_offset(leaf, extent, chunk_offset); - write_extent_buffer(leaf, root->fs_info->chunk_tree_uuid, - btrfs_dev_extent_chunk_tree_uuid(extent), BTRFS_UUID_SIZE); + write_extent_buffer_chunk_tree_uuid(leaf, fs_info->chunk_tree_uuid); btrfs_set_dev_extent_length(leaf, extent, num_bytes); btrfs_mark_buffer_dirty(leaf); @@ -1667,9 +1668,10 @@ error: * the btrfs_device struct should be fully filled in */ static int btrfs_add_device(struct btrfs_trans_handle *trans, - struct btrfs_root *root, + struct btrfs_fs_info *fs_info, struct btrfs_device *device) { + struct btrfs_root *root = fs_info->chunk_root; int ret; struct btrfs_path *path; struct btrfs_dev_item *dev_item; @@ -1677,8 +1679,6 @@ static int btrfs_add_device(struct btrfs_trans_handle *trans, struct btrfs_key key; unsigned long ptr; - root = root->fs_info->chunk_root; - path = btrfs_alloc_path(); if (!path) return -ENOMEM; @@ -1713,7 +1713,7 @@ static int btrfs_add_device(struct btrfs_trans_handle *trans, ptr = btrfs_device_uuid(dev_item); write_extent_buffer(leaf, device->uuid, ptr, BTRFS_UUID_SIZE); ptr = btrfs_device_fsid(dev_item); - write_extent_buffer(leaf, root->fs_info->fsid, ptr, BTRFS_UUID_SIZE); + write_extent_buffer(leaf, fs_info->fsid, ptr, BTRFS_UUID_SIZE); btrfs_mark_buffer_dirty(leaf); ret = 0; @@ -1737,16 +1737,15 @@ static void update_dev_time(char *path_name) filp_close(filp, NULL); } -static int btrfs_rm_dev_item(struct btrfs_root *root, +static int btrfs_rm_dev_item(struct btrfs_fs_info *fs_info, struct btrfs_device *device) { + struct btrfs_root *root = fs_info->chunk_root; int ret; struct btrfs_path *path; struct btrfs_key key; struct btrfs_trans_handle *trans; - root = root->fs_info->chunk_root; - path = btrfs_alloc_path(); if (!path) return -ENOMEM; @@ -1774,7 +1773,7 @@ static int btrfs_rm_dev_item(struct btrfs_root *root, goto out; out: btrfs_free_path(path); - btrfs_commit_transaction(trans, root); + btrfs_commit_transaction(trans); return ret; } @@ -1853,7 +1852,7 @@ void btrfs_assign_next_active_device(struct btrfs_fs_info *fs_info, fs_info->fs_devices->latest_bdev = next_device->bdev; } -int btrfs_rm_device(struct btrfs_root *root, char *device_path, u64 devid) +int btrfs_rm_device(struct btrfs_fs_info *fs_info, char *device_path, u64 devid) { struct btrfs_device *device; struct btrfs_fs_devices *cur_devices; @@ -1863,20 +1862,20 @@ int btrfs_rm_device(struct btrfs_root *root, char *device_path, u64 devid) mutex_lock(&uuid_mutex); - num_devices = root->fs_info->fs_devices->num_devices; - btrfs_dev_replace_lock(&root->fs_info->dev_replace, 0); - if (btrfs_dev_replace_is_ongoing(&root->fs_info->dev_replace)) { + num_devices = fs_info->fs_devices->num_devices; + btrfs_dev_replace_lock(&fs_info->dev_replace, 0); + if (btrfs_dev_replace_is_ongoing(&fs_info->dev_replace)) { WARN_ON(num_devices < 1); num_devices--; } - btrfs_dev_replace_unlock(&root->fs_info->dev_replace, 0); + btrfs_dev_replace_unlock(&fs_info->dev_replace, 0); - ret = btrfs_check_raid_min_devices(root->fs_info, num_devices - 1); + ret = btrfs_check_raid_min_devices(fs_info, num_devices - 1); if (ret) goto out; - ret = btrfs_find_device_by_devspec(root, devid, device_path, - &device); + ret = btrfs_find_device_by_devspec(fs_info, devid, device_path, + &device); if (ret) goto out; @@ -1885,16 +1884,16 @@ int btrfs_rm_device(struct btrfs_root *root, char *device_path, u64 devid) goto out; } - if (device->writeable && root->fs_info->fs_devices->rw_devices == 1) { + if (device->writeable && fs_info->fs_devices->rw_devices == 1) { ret = BTRFS_ERROR_DEV_ONLY_WRITABLE; goto out; } if (device->writeable) { - lock_chunks(root); + mutex_lock(&fs_info->chunk_mutex); list_del_init(&device->dev_alloc_list); device->fs_devices->rw_devices--; - unlock_chunks(root); + mutex_unlock(&fs_info->chunk_mutex); clear_super = true; } @@ -1909,12 +1908,12 @@ int btrfs_rm_device(struct btrfs_root *root, char *device_path, u64 devid) * counter although write_all_supers() is not locked out. This * could give a filesystem state which requires a degraded mount. */ - ret = btrfs_rm_dev_item(root->fs_info->chunk_root, device); + ret = btrfs_rm_dev_item(fs_info, device); if (ret) goto error_undo; device->in_fs_metadata = 0; - btrfs_scrub_cancel_dev(root->fs_info, device); + btrfs_scrub_cancel_dev(fs_info, device); /* * the device list mutex makes sure that we don't change @@ -1927,7 +1926,7 @@ int btrfs_rm_device(struct btrfs_root *root, char *device_path, u64 devid) */ cur_devices = device->fs_devices; - mutex_lock(&root->fs_info->fs_devices->device_list_mutex); + mutex_lock(&fs_info->fs_devices->device_list_mutex); list_del_rcu(&device->dev_list); device->fs_devices->num_devices--; @@ -1936,17 +1935,17 @@ int btrfs_rm_device(struct btrfs_root *root, char *device_path, u64 devid) if (device->missing) device->fs_devices->missing_devices--; - btrfs_assign_next_active_device(root->fs_info, device, NULL); + btrfs_assign_next_active_device(fs_info, device, NULL); if (device->bdev) { device->fs_devices->open_devices--; /* remove sysfs entry */ - btrfs_sysfs_rm_device_link(root->fs_info->fs_devices, device); + btrfs_sysfs_rm_device_link(fs_info->fs_devices, device); } - num_devices = btrfs_super_num_devices(root->fs_info->super_copy) - 1; - btrfs_set_super_num_devices(root->fs_info->super_copy, num_devices); - mutex_unlock(&root->fs_info->fs_devices->device_list_mutex); + num_devices = btrfs_super_num_devices(fs_info->super_copy) - 1; + btrfs_set_super_num_devices(fs_info->super_copy, num_devices); + mutex_unlock(&fs_info->fs_devices->device_list_mutex); /* * at this point, the device is zero sized and detached from @@ -1961,7 +1960,7 @@ int btrfs_rm_device(struct btrfs_root *root, char *device_path, u64 devid) if (cur_devices->open_devices == 0) { struct btrfs_fs_devices *fs_devices; - fs_devices = root->fs_info->fs_devices; + fs_devices = fs_info->fs_devices; while (fs_devices) { if (fs_devices->seed == cur_devices) { fs_devices->seed = cur_devices->seed; @@ -1974,8 +1973,8 @@ int btrfs_rm_device(struct btrfs_root *root, char *device_path, u64 devid) free_fs_devices(cur_devices); } - root->fs_info->num_tolerated_disk_barrier_failures = - btrfs_calc_num_tolerated_disk_barrier_failures(root->fs_info); + fs_info->num_tolerated_disk_barrier_failures = + btrfs_calc_num_tolerated_disk_barrier_failures(fs_info); out: mutex_unlock(&uuid_mutex); @@ -1983,11 +1982,11 @@ out: error_undo: if (device->writeable) { - lock_chunks(root); + mutex_lock(&fs_info->chunk_mutex); list_add(&device->dev_alloc_list, - &root->fs_info->fs_devices->alloc_list); + &fs_info->fs_devices->alloc_list); device->fs_devices->rw_devices++; - unlock_chunks(root); + mutex_unlock(&fs_info->chunk_mutex); } goto out; } @@ -2092,7 +2091,8 @@ void btrfs_destroy_dev_replace_tgtdev(struct btrfs_fs_info *fs_info, call_rcu(&tgtdev->rcu, free_device); } -static int btrfs_find_device_by_path(struct btrfs_root *root, char *device_path, +static int btrfs_find_device_by_path(struct btrfs_fs_info *fs_info, + char *device_path, struct btrfs_device **device) { int ret = 0; @@ -2104,14 +2104,13 @@ static int btrfs_find_device_by_path(struct btrfs_root *root, char *device_path, *device = NULL; ret = btrfs_get_bdev_and_sb(device_path, FMODE_READ, - root->fs_info->bdev_holder, 0, &bdev, &bh); + fs_info->bdev_holder, 0, &bdev, &bh); if (ret) return ret; disk_super = (struct btrfs_super_block *)bh->b_data; devid = btrfs_stack_device_id(&disk_super->dev_item); dev_uuid = disk_super->dev_item.uuid; - *device = btrfs_find_device(root->fs_info, devid, dev_uuid, - disk_super->fsid); + *device = btrfs_find_device(fs_info, devid, dev_uuid, disk_super->fsid); brelse(bh); if (!*device) ret = -ENOENT; @@ -2119,7 +2118,7 @@ static int btrfs_find_device_by_path(struct btrfs_root *root, char *device_path, return ret; } -int btrfs_find_device_missing_or_by_path(struct btrfs_root *root, +int btrfs_find_device_missing_or_by_path(struct btrfs_fs_info *fs_info, char *device_path, struct btrfs_device **device) { @@ -2128,7 +2127,7 @@ int btrfs_find_device_missing_or_by_path(struct btrfs_root *root, struct list_head *devices; struct btrfs_device *tmp; - devices = &root->fs_info->fs_devices->devices; + devices = &fs_info->fs_devices->devices; /* * It is safe to read the devices since the volume_mutex * is held by the caller. @@ -2145,30 +2144,28 @@ int btrfs_find_device_missing_or_by_path(struct btrfs_root *root, return 0; } else { - return btrfs_find_device_by_path(root, device_path, device); + return btrfs_find_device_by_path(fs_info, device_path, device); } } /* * Lookup a device given by device id, or the path if the id is 0. */ -int btrfs_find_device_by_devspec(struct btrfs_root *root, u64 devid, - char *devpath, - struct btrfs_device **device) +int btrfs_find_device_by_devspec(struct btrfs_fs_info *fs_info, u64 devid, + char *devpath, struct btrfs_device **device) { int ret; if (devid) { ret = 0; - *device = btrfs_find_device(root->fs_info, devid, NULL, - NULL); + *device = btrfs_find_device(fs_info, devid, NULL, NULL); if (!*device) ret = -ENOENT; } else { if (!devpath || !devpath[0]) return -EINVAL; - ret = btrfs_find_device_missing_or_by_path(root, devpath, + ret = btrfs_find_device_missing_or_by_path(fs_info, devpath, device); } return ret; @@ -2177,12 +2174,12 @@ int btrfs_find_device_by_devspec(struct btrfs_root *root, u64 devid, /* * does all the dirty work required for changing file system's UUID. */ -static int btrfs_prepare_sprout(struct btrfs_root *root) +static int btrfs_prepare_sprout(struct btrfs_fs_info *fs_info) { - struct btrfs_fs_devices *fs_devices = root->fs_info->fs_devices; + struct btrfs_fs_devices *fs_devices = fs_info->fs_devices; struct btrfs_fs_devices *old_devices; struct btrfs_fs_devices *seed_devices; - struct btrfs_super_block *disk_super = root->fs_info->super_copy; + struct btrfs_super_block *disk_super = fs_info->super_copy; struct btrfs_device *device; u64 super_flags; @@ -2208,15 +2205,15 @@ static int btrfs_prepare_sprout(struct btrfs_root *root) INIT_LIST_HEAD(&seed_devices->alloc_list); mutex_init(&seed_devices->device_list_mutex); - mutex_lock(&root->fs_info->fs_devices->device_list_mutex); + mutex_lock(&fs_info->fs_devices->device_list_mutex); list_splice_init_rcu(&fs_devices->devices, &seed_devices->devices, synchronize_rcu); list_for_each_entry(device, &seed_devices->devices, dev_list) device->fs_devices = seed_devices; - lock_chunks(root); + mutex_lock(&fs_info->chunk_mutex); list_splice_init(&fs_devices->alloc_list, &seed_devices->alloc_list); - unlock_chunks(root); + mutex_unlock(&fs_info->chunk_mutex); fs_devices->seeding = 0; fs_devices->num_devices = 0; @@ -2226,9 +2223,9 @@ static int btrfs_prepare_sprout(struct btrfs_root *root) fs_devices->seed = seed_devices; generate_random_uuid(fs_devices->fsid); - memcpy(root->fs_info->fsid, fs_devices->fsid, BTRFS_FSID_SIZE); + memcpy(fs_info->fsid, fs_devices->fsid, BTRFS_FSID_SIZE); memcpy(disk_super->fsid, fs_devices->fsid, BTRFS_FSID_SIZE); - mutex_unlock(&root->fs_info->fs_devices->device_list_mutex); + mutex_unlock(&fs_info->fs_devices->device_list_mutex); super_flags = btrfs_super_flags(disk_super) & ~BTRFS_SUPER_FLAG_SEEDING; @@ -2241,8 +2238,9 @@ static int btrfs_prepare_sprout(struct btrfs_root *root) * Store the expected generation for seed devices in device items. */ static int btrfs_finish_sprout(struct btrfs_trans_handle *trans, - struct btrfs_root *root) + struct btrfs_fs_info *fs_info) { + struct btrfs_root *root = fs_info->chunk_root; struct btrfs_path *path; struct extent_buffer *leaf; struct btrfs_dev_item *dev_item; @@ -2257,7 +2255,6 @@ static int btrfs_finish_sprout(struct btrfs_trans_handle *trans, if (!path) return -ENOMEM; - root = root->fs_info->chunk_root; key.objectid = BTRFS_DEV_ITEMS_OBJECTID; key.offset = 0; key.type = BTRFS_DEV_ITEM_KEY; @@ -2293,8 +2290,7 @@ next_slot: BTRFS_UUID_SIZE); read_extent_buffer(leaf, fs_uuid, btrfs_device_fsid(dev_item), BTRFS_UUID_SIZE); - device = btrfs_find_device(root->fs_info, devid, dev_uuid, - fs_uuid); + device = btrfs_find_device(fs_info, devid, dev_uuid, fs_uuid); BUG_ON(!device); /* Logic error */ if (device->fs_devices->seeding) { @@ -2312,28 +2308,29 @@ error: return ret; } -int btrfs_init_new_device(struct btrfs_root *root, char *device_path) +int btrfs_init_new_device(struct btrfs_fs_info *fs_info, char *device_path) { + struct btrfs_root *root = fs_info->dev_root; struct request_queue *q; struct btrfs_trans_handle *trans; struct btrfs_device *device; struct block_device *bdev; struct list_head *devices; - struct super_block *sb = root->fs_info->sb; + struct super_block *sb = fs_info->sb; struct rcu_string *name; u64 tmp; int seeding_dev = 0; int ret = 0; - if ((sb->s_flags & MS_RDONLY) && !root->fs_info->fs_devices->seeding) + if ((sb->s_flags & MS_RDONLY) && !fs_info->fs_devices->seeding) return -EROFS; bdev = blkdev_get_by_path(device_path, FMODE_WRITE | FMODE_EXCL, - root->fs_info->bdev_holder); + fs_info->bdev_holder); if (IS_ERR(bdev)) return PTR_ERR(bdev); - if (root->fs_info->fs_devices->seeding) { + if (fs_info->fs_devices->seeding) { seeding_dev = 1; down_write(&sb->s_umount); mutex_lock(&uuid_mutex); @@ -2341,20 +2338,20 @@ int btrfs_init_new_device(struct btrfs_root *root, char *device_path) filemap_write_and_wait(bdev->bd_inode->i_mapping); - devices = &root->fs_info->fs_devices->devices; + devices = &fs_info->fs_devices->devices; - mutex_lock(&root->fs_info->fs_devices->device_list_mutex); + mutex_lock(&fs_info->fs_devices->device_list_mutex); list_for_each_entry(device, devices, dev_list) { if (device->bdev == bdev) { ret = -EEXIST; mutex_unlock( - &root->fs_info->fs_devices->device_list_mutex); + &fs_info->fs_devices->device_list_mutex); goto error; } } - mutex_unlock(&root->fs_info->fs_devices->device_list_mutex); + mutex_unlock(&fs_info->fs_devices->device_list_mutex); - device = btrfs_alloc_device(root->fs_info, NULL, NULL); + device = btrfs_alloc_device(fs_info, NULL, NULL); if (IS_ERR(device)) { /* we can safely leave the fs_devices entry around */ ret = PTR_ERR(device); @@ -2382,13 +2379,13 @@ int btrfs_init_new_device(struct btrfs_root *root, char *device_path) device->can_discard = 1; device->writeable = 1; device->generation = trans->transid; - device->io_width = root->sectorsize; - device->io_align = root->sectorsize; - device->sector_size = root->sectorsize; + device->io_width = fs_info->sectorsize; + device->io_align = fs_info->sectorsize; + device->sector_size = fs_info->sectorsize; device->total_bytes = i_size_read(bdev->bd_inode); device->disk_total_bytes = device->total_bytes; device->commit_total_bytes = device->total_bytes; - device->dev_root = root->fs_info->dev_root; + device->fs_info = fs_info; device->bdev = bdev; device->in_fs_metadata = 1; device->is_tgtdev_for_dev_replace = 0; @@ -2398,61 +2395,60 @@ int btrfs_init_new_device(struct btrfs_root *root, char *device_path) if (seeding_dev) { sb->s_flags &= ~MS_RDONLY; - ret = btrfs_prepare_sprout(root); + ret = btrfs_prepare_sprout(fs_info); BUG_ON(ret); /* -ENOMEM */ } - device->fs_devices = root->fs_info->fs_devices; + device->fs_devices = fs_info->fs_devices; - mutex_lock(&root->fs_info->fs_devices->device_list_mutex); - lock_chunks(root); - list_add_rcu(&device->dev_list, &root->fs_info->fs_devices->devices); + mutex_lock(&fs_info->fs_devices->device_list_mutex); + mutex_lock(&fs_info->chunk_mutex); + list_add_rcu(&device->dev_list, &fs_info->fs_devices->devices); list_add(&device->dev_alloc_list, - &root->fs_info->fs_devices->alloc_list); - root->fs_info->fs_devices->num_devices++; - root->fs_info->fs_devices->open_devices++; - root->fs_info->fs_devices->rw_devices++; - root->fs_info->fs_devices->total_devices++; - root->fs_info->fs_devices->total_rw_bytes += device->total_bytes; + &fs_info->fs_devices->alloc_list); + fs_info->fs_devices->num_devices++; + fs_info->fs_devices->open_devices++; + fs_info->fs_devices->rw_devices++; + fs_info->fs_devices->total_devices++; + fs_info->fs_devices->total_rw_bytes += device->total_bytes; - spin_lock(&root->fs_info->free_chunk_lock); - root->fs_info->free_chunk_space += device->total_bytes; - spin_unlock(&root->fs_info->free_chunk_lock); + spin_lock(&fs_info->free_chunk_lock); + fs_info->free_chunk_space += device->total_bytes; + spin_unlock(&fs_info->free_chunk_lock); if (!blk_queue_nonrot(bdev_get_queue(bdev))) - root->fs_info->fs_devices->rotating = 1; + fs_info->fs_devices->rotating = 1; - tmp = btrfs_super_total_bytes(root->fs_info->super_copy); - btrfs_set_super_total_bytes(root->fs_info->super_copy, + tmp = btrfs_super_total_bytes(fs_info->super_copy); + btrfs_set_super_total_bytes(fs_info->super_copy, tmp + device->total_bytes); - tmp = btrfs_super_num_devices(root->fs_info->super_copy); - btrfs_set_super_num_devices(root->fs_info->super_copy, - tmp + 1); + tmp = btrfs_super_num_devices(fs_info->super_copy); + btrfs_set_super_num_devices(fs_info->super_copy, tmp + 1); /* add sysfs device entry */ - btrfs_sysfs_add_device_link(root->fs_info->fs_devices, device); + btrfs_sysfs_add_device_link(fs_info->fs_devices, device); /* * we've got more storage, clear any full flags on the space * infos */ - btrfs_clear_space_info_full(root->fs_info); + btrfs_clear_space_info_full(fs_info); - unlock_chunks(root); - mutex_unlock(&root->fs_info->fs_devices->device_list_mutex); + mutex_unlock(&fs_info->chunk_mutex); + mutex_unlock(&fs_info->fs_devices->device_list_mutex); if (seeding_dev) { - lock_chunks(root); - ret = init_first_rw_device(trans, root, device); - unlock_chunks(root); + mutex_lock(&fs_info->chunk_mutex); + ret = init_first_rw_device(trans, fs_info, device); + mutex_unlock(&fs_info->chunk_mutex); if (ret) { btrfs_abort_transaction(trans, ret); goto error_trans; } } - ret = btrfs_add_device(trans, root, device); + ret = btrfs_add_device(trans, fs_info, device); if (ret) { btrfs_abort_transaction(trans, ret); goto error_trans; @@ -2461,7 +2457,7 @@ int btrfs_init_new_device(struct btrfs_root *root, char *device_path) if (seeding_dev) { char fsid_buf[BTRFS_UUID_UNPARSED_SIZE]; - ret = btrfs_finish_sprout(trans, root); + ret = btrfs_finish_sprout(trans, fs_info); if (ret) { btrfs_abort_transaction(trans, ret); goto error_trans; @@ -2471,16 +2467,15 @@ int btrfs_init_new_device(struct btrfs_root *root, char *device_path) * so rename the fsid on the sysfs */ snprintf(fsid_buf, BTRFS_UUID_UNPARSED_SIZE, "%pU", - root->fs_info->fsid); - if (kobject_rename(&root->fs_info->fs_devices->fsid_kobj, - fsid_buf)) - btrfs_warn(root->fs_info, - "sysfs: failed to create fsid for sprout"); + fs_info->fsid); + if (kobject_rename(&fs_info->fs_devices->fsid_kobj, fsid_buf)) + btrfs_warn(fs_info, + "sysfs: failed to create fsid for sprout"); } - root->fs_info->num_tolerated_disk_barrier_failures = - btrfs_calc_num_tolerated_disk_barrier_failures(root->fs_info); - ret = btrfs_commit_transaction(trans, root); + fs_info->num_tolerated_disk_barrier_failures = + btrfs_calc_num_tolerated_disk_barrier_failures(fs_info); + ret = btrfs_commit_transaction(trans); if (seeding_dev) { mutex_unlock(&uuid_mutex); @@ -2489,9 +2484,9 @@ int btrfs_init_new_device(struct btrfs_root *root, char *device_path) if (ret) /* transaction commit */ return ret; - ret = btrfs_relocate_sys_chunks(root); + ret = btrfs_relocate_sys_chunks(fs_info); if (ret < 0) - btrfs_handle_fs_error(root->fs_info, ret, + btrfs_handle_fs_error(fs_info, ret, "Failed to relocate sys chunks after device initialization. This can be fixed using the \"btrfs balance\" command."); trans = btrfs_attach_transaction(root); if (IS_ERR(trans)) { @@ -2499,7 +2494,7 @@ int btrfs_init_new_device(struct btrfs_root *root, char *device_path) return 0; return PTR_ERR(trans); } - ret = btrfs_commit_transaction(trans, root); + ret = btrfs_commit_transaction(trans); } /* Update ctime/mtime for libblkid */ @@ -2507,9 +2502,9 @@ int btrfs_init_new_device(struct btrfs_root *root, char *device_path) return ret; error_trans: - btrfs_end_transaction(trans, root); + btrfs_end_transaction(trans); rcu_string_free(device->name); - btrfs_sysfs_rm_device_link(root->fs_info->fs_devices, device); + btrfs_sysfs_rm_device_link(fs_info->fs_devices, device); kfree(device); error: blkdev_put(bdev, FMODE_EXCL); @@ -2520,14 +2515,14 @@ error: return ret; } -int btrfs_init_dev_replace_tgtdev(struct btrfs_root *root, char *device_path, +int btrfs_init_dev_replace_tgtdev(struct btrfs_fs_info *fs_info, + char *device_path, struct btrfs_device *srcdev, struct btrfs_device **device_out) { struct request_queue *q; struct btrfs_device *device; struct block_device *bdev; - struct btrfs_fs_info *fs_info = root->fs_info; struct list_head *devices; struct rcu_string *name; u64 devid = BTRFS_DEV_REPLACE_DEVID; @@ -2585,19 +2580,19 @@ int btrfs_init_dev_replace_tgtdev(struct btrfs_root *root, char *device_path, q = bdev_get_queue(bdev); if (blk_queue_discard(q)) device->can_discard = 1; - mutex_lock(&root->fs_info->fs_devices->device_list_mutex); + mutex_lock(&fs_info->fs_devices->device_list_mutex); device->writeable = 1; device->generation = 0; - device->io_width = root->sectorsize; - device->io_align = root->sectorsize; - device->sector_size = root->sectorsize; + device->io_width = fs_info->sectorsize; + device->io_align = fs_info->sectorsize; + device->sector_size = fs_info->sectorsize; device->total_bytes = btrfs_device_get_total_bytes(srcdev); device->disk_total_bytes = btrfs_device_get_disk_total_bytes(srcdev); device->bytes_used = btrfs_device_get_bytes_used(srcdev); ASSERT(list_empty(&srcdev->resized_list)); device->commit_total_bytes = srcdev->commit_total_bytes; device->commit_bytes_used = device->bytes_used; - device->dev_root = fs_info->dev_root; + device->fs_info = fs_info; device->bdev = bdev; device->in_fs_metadata = 1; device->is_tgtdev_for_dev_replace = 1; @@ -2608,7 +2603,7 @@ int btrfs_init_dev_replace_tgtdev(struct btrfs_root *root, char *device_path, list_add(&device->dev_list, &fs_info->fs_devices->devices); fs_info->fs_devices->num_devices++; fs_info->fs_devices->open_devices++; - mutex_unlock(&root->fs_info->fs_devices->device_list_mutex); + mutex_unlock(&fs_info->fs_devices->device_list_mutex); *device_out = device; return ret; @@ -2621,11 +2616,13 @@ error: void btrfs_init_dev_replace_tgtdev_for_resume(struct btrfs_fs_info *fs_info, struct btrfs_device *tgtdev) { + u32 sectorsize = fs_info->sectorsize; + WARN_ON(fs_info->fs_devices->rw_devices == 0); - tgtdev->io_width = fs_info->dev_root->sectorsize; - tgtdev->io_align = fs_info->dev_root->sectorsize; - tgtdev->sector_size = fs_info->dev_root->sectorsize; - tgtdev->dev_root = fs_info->dev_root; + tgtdev->io_width = sectorsize; + tgtdev->io_align = sectorsize; + tgtdev->sector_size = sectorsize; + tgtdev->fs_info = fs_info; tgtdev->in_fs_metadata = 1; } @@ -2634,13 +2631,11 @@ static noinline int btrfs_update_device(struct btrfs_trans_handle *trans, { int ret; struct btrfs_path *path; - struct btrfs_root *root; + struct btrfs_root *root = device->fs_info->chunk_root; struct btrfs_dev_item *dev_item; struct extent_buffer *leaf; struct btrfs_key key; - root = device->dev_root->fs_info->chunk_root; - path = btrfs_alloc_path(); if (!path) return -ENOMEM; @@ -2680,8 +2675,8 @@ out: int btrfs_grow_device(struct btrfs_trans_handle *trans, struct btrfs_device *device, u64 new_size) { - struct btrfs_super_block *super_copy = - device->dev_root->fs_info->super_copy; + struct btrfs_fs_info *fs_info = device->fs_info; + struct btrfs_super_block *super_copy = fs_info->super_copy; struct btrfs_fs_devices *fs_devices; u64 old_total; u64 diff; @@ -2689,41 +2684,41 @@ int btrfs_grow_device(struct btrfs_trans_handle *trans, if (!device->writeable) return -EACCES; - lock_chunks(device->dev_root); + mutex_lock(&fs_info->chunk_mutex); old_total = btrfs_super_total_bytes(super_copy); diff = new_size - device->total_bytes; if (new_size <= device->total_bytes || device->is_tgtdev_for_dev_replace) { - unlock_chunks(device->dev_root); + mutex_unlock(&fs_info->chunk_mutex); return -EINVAL; } - fs_devices = device->dev_root->fs_info->fs_devices; + fs_devices = fs_info->fs_devices; btrfs_set_super_total_bytes(super_copy, old_total + diff); device->fs_devices->total_rw_bytes += diff; btrfs_device_set_total_bytes(device, new_size); btrfs_device_set_disk_total_bytes(device, new_size); - btrfs_clear_space_info_full(device->dev_root->fs_info); + btrfs_clear_space_info_full(device->fs_info); if (list_empty(&device->resized_list)) list_add_tail(&device->resized_list, &fs_devices->resized_devices); - unlock_chunks(device->dev_root); + mutex_unlock(&fs_info->chunk_mutex); return btrfs_update_device(trans, device); } static int btrfs_free_chunk(struct btrfs_trans_handle *trans, - struct btrfs_root *root, u64 chunk_objectid, + struct btrfs_fs_info *fs_info, u64 chunk_objectid, u64 chunk_offset) { + struct btrfs_root *root = fs_info->chunk_root; int ret; struct btrfs_path *path; struct btrfs_key key; - root = root->fs_info->chunk_root; path = btrfs_alloc_path(); if (!path) return -ENOMEM; @@ -2736,25 +2731,25 @@ static int btrfs_free_chunk(struct btrfs_trans_handle *trans, if (ret < 0) goto out; else if (ret > 0) { /* Logic error or corruption */ - btrfs_handle_fs_error(root->fs_info, -ENOENT, - "Failed lookup while freeing chunk."); + btrfs_handle_fs_error(fs_info, -ENOENT, + "Failed lookup while freeing chunk."); ret = -ENOENT; goto out; } ret = btrfs_del_item(trans, root, path); if (ret < 0) - btrfs_handle_fs_error(root->fs_info, ret, - "Failed to delete chunk item."); + btrfs_handle_fs_error(fs_info, ret, + "Failed to delete chunk item."); out: btrfs_free_path(path); return ret; } -static int btrfs_del_sys_chunk(struct btrfs_root *root, u64 chunk_objectid, u64 - chunk_offset) +static int btrfs_del_sys_chunk(struct btrfs_fs_info *fs_info, + u64 chunk_objectid, u64 chunk_offset) { - struct btrfs_super_block *super_copy = root->fs_info->super_copy; + struct btrfs_super_block *super_copy = fs_info->super_copy; struct btrfs_disk_key *disk_key; struct btrfs_chunk *chunk; u8 *ptr; @@ -2765,7 +2760,7 @@ static int btrfs_del_sys_chunk(struct btrfs_root *root, u64 chunk_objectid, u64 u32 cur; struct btrfs_key key; - lock_chunks(root); + mutex_lock(&fs_info->chunk_mutex); array_size = btrfs_super_sys_array_size(super_copy); ptr = super_copy->sys_chunk_array; @@ -2795,25 +2790,22 @@ static int btrfs_del_sys_chunk(struct btrfs_root *root, u64 chunk_objectid, u64 cur += len; } } - unlock_chunks(root); + mutex_unlock(&fs_info->chunk_mutex); return ret; } int btrfs_remove_chunk(struct btrfs_trans_handle *trans, - struct btrfs_root *root, u64 chunk_offset) + struct btrfs_fs_info *fs_info, u64 chunk_offset) { struct extent_map_tree *em_tree; struct extent_map *em; - struct btrfs_root *extent_root = root->fs_info->extent_root; struct map_lookup *map; u64 dev_extent_len = 0; u64 chunk_objectid = BTRFS_FIRST_CHUNK_TREE_OBJECTID; int i, ret = 0; - struct btrfs_fs_devices *fs_devices = root->fs_info->fs_devices; + struct btrfs_fs_devices *fs_devices = fs_info->fs_devices; - /* Just in case */ - root = root->fs_info->chunk_root; - em_tree = &root->fs_info->mapping_tree.map_tree; + em_tree = &fs_info->mapping_tree.map_tree; read_lock(&em_tree->lock); em = lookup_extent_mapping(em_tree, chunk_offset, 1); @@ -2832,9 +2824,9 @@ int btrfs_remove_chunk(struct btrfs_trans_handle *trans, return -EINVAL; } map = em->map_lookup; - lock_chunks(root->fs_info->chunk_root); - check_system_chunk(trans, extent_root, map->type); - unlock_chunks(root->fs_info->chunk_root); + mutex_lock(&fs_info->chunk_mutex); + check_system_chunk(trans, fs_info, map->type); + mutex_unlock(&fs_info->chunk_mutex); /* * Take the device list mutex to prevent races with the final phase of @@ -2854,14 +2846,14 @@ int btrfs_remove_chunk(struct btrfs_trans_handle *trans, } if (device->bytes_used > 0) { - lock_chunks(root); + mutex_lock(&fs_info->chunk_mutex); btrfs_device_set_bytes_used(device, device->bytes_used - dev_extent_len); - spin_lock(&root->fs_info->free_chunk_lock); - root->fs_info->free_chunk_space += dev_extent_len; - spin_unlock(&root->fs_info->free_chunk_lock); - btrfs_clear_space_info_full(root->fs_info); - unlock_chunks(root); + spin_lock(&fs_info->free_chunk_lock); + fs_info->free_chunk_space += dev_extent_len; + spin_unlock(&fs_info->free_chunk_lock); + btrfs_clear_space_info_full(fs_info); + mutex_unlock(&fs_info->chunk_mutex); } if (map->stripes[i].dev) { @@ -2875,23 +2867,24 @@ int btrfs_remove_chunk(struct btrfs_trans_handle *trans, } mutex_unlock(&fs_devices->device_list_mutex); - ret = btrfs_free_chunk(trans, root, chunk_objectid, chunk_offset); + ret = btrfs_free_chunk(trans, fs_info, chunk_objectid, chunk_offset); if (ret) { btrfs_abort_transaction(trans, ret); goto out; } - trace_btrfs_chunk_free(root, map, chunk_offset, em->len); + trace_btrfs_chunk_free(fs_info, map, chunk_offset, em->len); if (map->type & BTRFS_BLOCK_GROUP_SYSTEM) { - ret = btrfs_del_sys_chunk(root, chunk_objectid, chunk_offset); + ret = btrfs_del_sys_chunk(fs_info, chunk_objectid, + chunk_offset); if (ret) { btrfs_abort_transaction(trans, ret); goto out; } } - ret = btrfs_remove_block_group(trans, extent_root, chunk_offset, em); + ret = btrfs_remove_block_group(trans, fs_info, chunk_offset, em); if (ret) { btrfs_abort_transaction(trans, ret); goto out; @@ -2903,15 +2896,12 @@ out: return ret; } -static int btrfs_relocate_chunk(struct btrfs_root *root, u64 chunk_offset) +static int btrfs_relocate_chunk(struct btrfs_fs_info *fs_info, u64 chunk_offset) { - struct btrfs_root *extent_root; + struct btrfs_root *root = fs_info->chunk_root; struct btrfs_trans_handle *trans; int ret; - root = root->fs_info->chunk_root; - extent_root = root->fs_info->extent_root; - /* * Prevent races with automatic removal of unused block groups. * After we relocate and before we remove the chunk with offset @@ -2924,16 +2914,16 @@ static int btrfs_relocate_chunk(struct btrfs_root *root, u64 chunk_offset) * we release the path used to search the chunk/dev tree and before * the current task acquires this mutex and calls us. */ - ASSERT(mutex_is_locked(&root->fs_info->delete_unused_bgs_mutex)); + ASSERT(mutex_is_locked(&fs_info->delete_unused_bgs_mutex)); - ret = btrfs_can_relocate(extent_root, chunk_offset); + ret = btrfs_can_relocate(fs_info, chunk_offset); if (ret) return -ENOSPC; /* step one, relocate all the extents inside this chunk */ - btrfs_scrub_pause(root); - ret = btrfs_relocate_block_group(extent_root, chunk_offset); - btrfs_scrub_continue(root); + btrfs_scrub_pause(fs_info); + ret = btrfs_relocate_block_group(fs_info, chunk_offset); + btrfs_scrub_continue(fs_info); if (ret) return ret; @@ -2949,14 +2939,14 @@ static int btrfs_relocate_chunk(struct btrfs_root *root, u64 chunk_offset) * step two, delete the device extents and the * chunk tree entries */ - ret = btrfs_remove_chunk(trans, root, chunk_offset); - btrfs_end_transaction(trans, extent_root); + ret = btrfs_remove_chunk(trans, fs_info, chunk_offset); + btrfs_end_transaction(trans); return ret; } -static int btrfs_relocate_sys_chunks(struct btrfs_root *root) +static int btrfs_relocate_sys_chunks(struct btrfs_fs_info *fs_info) { - struct btrfs_root *chunk_root = root->fs_info->chunk_root; + struct btrfs_root *chunk_root = fs_info->chunk_root; struct btrfs_path *path; struct extent_buffer *leaf; struct btrfs_chunk *chunk; @@ -2977,10 +2967,10 @@ again: key.type = BTRFS_CHUNK_ITEM_KEY; while (1) { - mutex_lock(&root->fs_info->delete_unused_bgs_mutex); + mutex_lock(&fs_info->delete_unused_bgs_mutex); ret = btrfs_search_slot(NULL, chunk_root, &key, path, 0, 0); if (ret < 0) { - mutex_unlock(&root->fs_info->delete_unused_bgs_mutex); + mutex_unlock(&fs_info->delete_unused_bgs_mutex); goto error; } BUG_ON(ret == 0); /* Corruption */ @@ -2988,7 +2978,7 @@ again: ret = btrfs_previous_item(chunk_root, path, key.objectid, key.type); if (ret) - mutex_unlock(&root->fs_info->delete_unused_bgs_mutex); + mutex_unlock(&fs_info->delete_unused_bgs_mutex); if (ret < 0) goto error; if (ret > 0) @@ -3003,14 +2993,13 @@ again: btrfs_release_path(path); if (chunk_type & BTRFS_BLOCK_GROUP_SYSTEM) { - ret = btrfs_relocate_chunk(chunk_root, - found_key.offset); + ret = btrfs_relocate_chunk(fs_info, found_key.offset); if (ret == -ENOSPC) failed++; else BUG_ON(ret); } - mutex_unlock(&root->fs_info->delete_unused_bgs_mutex); + mutex_unlock(&fs_info->delete_unused_bgs_mutex); if (found_key.offset == 0) break; @@ -3029,9 +3018,10 @@ error: return ret; } -static int insert_balance_item(struct btrfs_root *root, +static int insert_balance_item(struct btrfs_fs_info *fs_info, struct btrfs_balance_control *bctl) { + struct btrfs_root *root = fs_info->tree_root; struct btrfs_trans_handle *trans; struct btrfs_balance_item *item; struct btrfs_disk_balance_args disk_bargs; @@ -3062,7 +3052,7 @@ static int insert_balance_item(struct btrfs_root *root, leaf = path->nodes[0]; item = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_balance_item); - memset_extent_buffer(leaf, 0, (unsigned long)item, sizeof(*item)); + memzero_extent_buffer(leaf, (unsigned long)item, sizeof(*item)); btrfs_cpu_balance_args_to_disk(&disk_bargs, &bctl->data); btrfs_set_balance_data(leaf, item, &disk_bargs); @@ -3076,14 +3066,15 @@ static int insert_balance_item(struct btrfs_root *root, btrfs_mark_buffer_dirty(leaf); out: btrfs_free_path(path); - err = btrfs_commit_transaction(trans, root); + err = btrfs_commit_transaction(trans); if (err && !ret) ret = err; return ret; } -static int del_balance_item(struct btrfs_root *root) +static int del_balance_item(struct btrfs_fs_info *fs_info) { + struct btrfs_root *root = fs_info->tree_root; struct btrfs_trans_handle *trans; struct btrfs_path *path; struct btrfs_key key; @@ -3114,7 +3105,7 @@ static int del_balance_item(struct btrfs_root *root) ret = btrfs_del_item(trans, root, path); out: btrfs_free_path(path); - err = btrfs_commit_transaction(trans, root); + err = btrfs_commit_transaction(trans); if (err && !ret) ret = err; return ret; @@ -3369,11 +3360,11 @@ static int chunk_soft_convert_filter(u64 chunk_type, return 0; } -static int should_balance_chunk(struct btrfs_root *root, +static int should_balance_chunk(struct btrfs_fs_info *fs_info, struct extent_buffer *leaf, struct btrfs_chunk *chunk, u64 chunk_offset) { - struct btrfs_balance_control *bctl = root->fs_info->balance_ctl; + struct btrfs_balance_control *bctl = fs_info->balance_ctl; struct btrfs_balance_args *bargs = NULL; u64 chunk_type = btrfs_chunk_type(leaf, chunk); @@ -3398,10 +3389,10 @@ static int should_balance_chunk(struct btrfs_root *root, /* usage filter */ if ((bargs->flags & BTRFS_BALANCE_ARGS_USAGE) && - chunk_usage_filter(bctl->fs_info, chunk_offset, bargs)) { + chunk_usage_filter(fs_info, chunk_offset, bargs)) { return 0; } else if ((bargs->flags & BTRFS_BALANCE_ARGS_USAGE_RANGE) && - chunk_usage_range_filter(bctl->fs_info, chunk_offset, bargs)) { + chunk_usage_range_filter(fs_info, chunk_offset, bargs)) { return 0; } @@ -3521,7 +3512,7 @@ static int __btrfs_balance(struct btrfs_fs_info *fs_info) ret = btrfs_grow_device(trans, device, old_size); if (ret) { - btrfs_end_transaction(trans, dev_root); + btrfs_end_transaction(trans); /* btrfs_grow_device never returns ret > 0 */ WARN_ON(ret > 0); btrfs_info_in_rcu(fs_info, @@ -3531,7 +3522,7 @@ static int __btrfs_balance(struct btrfs_fs_info *fs_info) goto error; } - btrfs_end_transaction(trans, dev_root); + btrfs_end_transaction(trans); } /* step two, relocate all the chunks */ @@ -3606,7 +3597,7 @@ again: spin_unlock(&fs_info->balance_lock); } - ret = should_balance_chunk(chunk_root, leaf, chunk, + ret = should_balance_chunk(fs_info, leaf, chunk, found_key.offset); btrfs_release_path(path); @@ -3659,9 +3650,9 @@ again: goto error; } - ret = btrfs_force_chunk_alloc(trans, chunk_root, + ret = btrfs_force_chunk_alloc(trans, fs_info, BTRFS_BLOCK_GROUP_DATA); - btrfs_end_transaction(trans, chunk_root); + btrfs_end_transaction(trans); if (ret < 0) { mutex_unlock(&fs_info->delete_unused_bgs_mutex); goto error; @@ -3669,8 +3660,7 @@ again: chunk_reserved = 1; } - ret = btrfs_relocate_chunk(chunk_root, - found_key.offset); + ret = btrfs_relocate_chunk(fs_info, found_key.offset); mutex_unlock(&fs_info->delete_unused_bgs_mutex); if (ret && ret != -ENOSPC) goto error; @@ -3741,7 +3731,7 @@ static void __cancel_balance(struct btrfs_fs_info *fs_info) int ret; unset_balance_control(fs_info); - ret = del_balance_item(fs_info->tree_root); + ret = del_balance_item(fs_info); if (ret) btrfs_handle_fs_error(fs_info, ret, NULL); @@ -3874,7 +3864,7 @@ int btrfs_balance(struct btrfs_balance_control *bctl, bctl->sys.target)); } - ret = insert_balance_item(fs_info->tree_root, bctl); + ret = insert_balance_item(fs_info, bctl); if (ret && ret != -EEXIST) goto out; @@ -4166,7 +4156,7 @@ static int btrfs_uuid_scan_kthread(void *data) } update_tree: if (!btrfs_is_empty_uuid(root_item.uuid)) { - ret = btrfs_uuid_tree_add(trans, fs_info->uuid_root, + ret = btrfs_uuid_tree_add(trans, fs_info, root_item.uuid, BTRFS_UUID_KEY_SUBVOL, key.objectid); @@ -4178,7 +4168,7 @@ update_tree: } if (!btrfs_is_empty_uuid(root_item.received_uuid)) { - ret = btrfs_uuid_tree_add(trans, fs_info->uuid_root, + ret = btrfs_uuid_tree_add(trans, fs_info, root_item.received_uuid, BTRFS_UUID_KEY_RECEIVED_SUBVOL, key.objectid); @@ -4191,7 +4181,7 @@ update_tree: skip: if (trans) { - ret = btrfs_end_transaction(trans, fs_info->uuid_root); + ret = btrfs_end_transaction(trans); trans = NULL; if (ret) break; @@ -4216,7 +4206,7 @@ skip: out: btrfs_free_path(path); if (trans && !IS_ERR(trans)) - btrfs_end_transaction(trans, fs_info->uuid_root); + btrfs_end_transaction(trans); if (ret) btrfs_warn(fs_info, "btrfs_uuid_scan_kthread failed %d", ret); else @@ -4310,13 +4300,13 @@ int btrfs_create_uuid_tree(struct btrfs_fs_info *fs_info) if (IS_ERR(uuid_root)) { ret = PTR_ERR(uuid_root); btrfs_abort_transaction(trans, ret); - btrfs_end_transaction(trans, tree_root); + btrfs_end_transaction(trans); return ret; } fs_info->uuid_root = uuid_root; - ret = btrfs_commit_transaction(trans, tree_root); + ret = btrfs_commit_transaction(trans); if (ret) return ret; @@ -4355,8 +4345,9 @@ int btrfs_check_uuid_tree(struct btrfs_fs_info *fs_info) */ int btrfs_shrink_device(struct btrfs_device *device, u64 new_size) { + struct btrfs_fs_info *fs_info = device->fs_info; + struct btrfs_root *root = fs_info->dev_root; struct btrfs_trans_handle *trans; - struct btrfs_root *root = device->dev_root; struct btrfs_dev_extent *dev_extent = NULL; struct btrfs_path *path; u64 length; @@ -4368,7 +4359,7 @@ int btrfs_shrink_device(struct btrfs_device *device, u64 new_size) bool checked_pending_chunks = false; struct extent_buffer *l; struct btrfs_key key; - struct btrfs_super_block *super_copy = root->fs_info->super_copy; + struct btrfs_super_block *super_copy = fs_info->super_copy; u64 old_total = btrfs_super_total_bytes(super_copy); u64 old_size = btrfs_device_get_total_bytes(device); u64 diff = old_size - new_size; @@ -4382,16 +4373,16 @@ int btrfs_shrink_device(struct btrfs_device *device, u64 new_size) path->reada = READA_FORWARD; - lock_chunks(root); + mutex_lock(&fs_info->chunk_mutex); btrfs_device_set_total_bytes(device, new_size); if (device->writeable) { device->fs_devices->total_rw_bytes -= diff; - spin_lock(&root->fs_info->free_chunk_lock); - root->fs_info->free_chunk_space -= diff; - spin_unlock(&root->fs_info->free_chunk_lock); + spin_lock(&fs_info->free_chunk_lock); + fs_info->free_chunk_space -= diff; + spin_unlock(&fs_info->free_chunk_lock); } - unlock_chunks(root); + mutex_unlock(&fs_info->chunk_mutex); again: key.objectid = device->devid; @@ -4399,16 +4390,16 @@ again: key.type = BTRFS_DEV_EXTENT_KEY; do { - mutex_lock(&root->fs_info->delete_unused_bgs_mutex); + mutex_lock(&fs_info->delete_unused_bgs_mutex); ret = btrfs_search_slot(NULL, root, &key, path, 0, 0); if (ret < 0) { - mutex_unlock(&root->fs_info->delete_unused_bgs_mutex); + mutex_unlock(&fs_info->delete_unused_bgs_mutex); goto done; } ret = btrfs_previous_item(root, path, 0, key.type); if (ret) - mutex_unlock(&root->fs_info->delete_unused_bgs_mutex); + mutex_unlock(&fs_info->delete_unused_bgs_mutex); if (ret < 0) goto done; if (ret) { @@ -4422,7 +4413,7 @@ again: btrfs_item_key_to_cpu(l, &key, path->slots[0]); if (key.objectid != device->devid) { - mutex_unlock(&root->fs_info->delete_unused_bgs_mutex); + mutex_unlock(&fs_info->delete_unused_bgs_mutex); btrfs_release_path(path); break; } @@ -4431,7 +4422,7 @@ again: length = btrfs_dev_extent_length(l, dev_extent); if (key.offset + length <= new_size) { - mutex_unlock(&root->fs_info->delete_unused_bgs_mutex); + mutex_unlock(&fs_info->delete_unused_bgs_mutex); btrfs_release_path(path); break; } @@ -4439,8 +4430,8 @@ again: chunk_offset = btrfs_dev_extent_chunk_offset(l, dev_extent); btrfs_release_path(path); - ret = btrfs_relocate_chunk(root, chunk_offset); - mutex_unlock(&root->fs_info->delete_unused_bgs_mutex); + ret = btrfs_relocate_chunk(fs_info, chunk_offset); + mutex_unlock(&fs_info->delete_unused_bgs_mutex); if (ret && ret != -ENOSPC) goto done; if (ret == -ENOSPC) @@ -4463,7 +4454,7 @@ again: goto done; } - lock_chunks(root); + mutex_lock(&fs_info->chunk_mutex); /* * We checked in the above loop all device extents that were already in @@ -4483,11 +4474,11 @@ again: if (contains_pending_extent(trans->transaction, device, &start, len)) { - unlock_chunks(root); + mutex_unlock(&fs_info->chunk_mutex); checked_pending_chunks = true; failed = 0; retried = false; - ret = btrfs_commit_transaction(trans, root); + ret = btrfs_commit_transaction(trans); if (ret) goto done; goto again; @@ -4497,44 +4488,44 @@ again: btrfs_device_set_disk_total_bytes(device, new_size); if (list_empty(&device->resized_list)) list_add_tail(&device->resized_list, - &root->fs_info->fs_devices->resized_devices); + &fs_info->fs_devices->resized_devices); WARN_ON(diff > old_total); btrfs_set_super_total_bytes(super_copy, old_total - diff); - unlock_chunks(root); + mutex_unlock(&fs_info->chunk_mutex); /* Now btrfs_update_device() will change the on-disk size. */ ret = btrfs_update_device(trans, device); - btrfs_end_transaction(trans, root); + btrfs_end_transaction(trans); done: btrfs_free_path(path); if (ret) { - lock_chunks(root); + mutex_lock(&fs_info->chunk_mutex); btrfs_device_set_total_bytes(device, old_size); if (device->writeable) device->fs_devices->total_rw_bytes += diff; - spin_lock(&root->fs_info->free_chunk_lock); - root->fs_info->free_chunk_space += diff; - spin_unlock(&root->fs_info->free_chunk_lock); - unlock_chunks(root); + spin_lock(&fs_info->free_chunk_lock); + fs_info->free_chunk_space += diff; + spin_unlock(&fs_info->free_chunk_lock); + mutex_unlock(&fs_info->chunk_mutex); } return ret; } -static int btrfs_add_system_chunk(struct btrfs_root *root, +static int btrfs_add_system_chunk(struct btrfs_fs_info *fs_info, struct btrfs_key *key, struct btrfs_chunk *chunk, int item_size) { - struct btrfs_super_block *super_copy = root->fs_info->super_copy; + struct btrfs_super_block *super_copy = fs_info->super_copy; struct btrfs_disk_key disk_key; u32 array_size; u8 *ptr; - lock_chunks(root); + mutex_lock(&fs_info->chunk_mutex); array_size = btrfs_super_sys_array_size(super_copy); if (array_size + item_size + sizeof(disk_key) > BTRFS_SYSTEM_CHUNK_ARRAY_SIZE) { - unlock_chunks(root); + mutex_unlock(&fs_info->chunk_mutex); return -EFBIG; } @@ -4545,7 +4536,7 @@ static int btrfs_add_system_chunk(struct btrfs_root *root, memcpy(ptr, chunk, item_size); item_size += sizeof(disk_key); btrfs_set_super_sys_array_size(super_copy, array_size + item_size); - unlock_chunks(root); + mutex_unlock(&fs_info->chunk_mutex); return 0; } @@ -4583,7 +4574,7 @@ static void check_raid56_incompat_flag(struct btrfs_fs_info *info, u64 type) btrfs_set_fs_incompat(info, RAID56); } -#define BTRFS_MAX_DEVS(r) ((BTRFS_MAX_ITEM_SIZE(r) \ +#define BTRFS_MAX_DEVS(r) ((BTRFS_MAX_ITEM_SIZE(r->fs_info) \ - sizeof(struct btrfs_chunk)) \ / sizeof(struct btrfs_stripe) + 1) @@ -4593,10 +4584,10 @@ static void check_raid56_incompat_flag(struct btrfs_fs_info *info, u64 type) / sizeof(struct btrfs_stripe) + 1) static int __btrfs_alloc_chunk(struct btrfs_trans_handle *trans, - struct btrfs_root *extent_root, u64 start, + struct btrfs_fs_info *fs_info, u64 start, u64 type) { - struct btrfs_fs_info *info = extent_root->fs_info; + struct btrfs_fs_info *info = trans->fs_info; struct btrfs_fs_devices *fs_devices = info->fs_devices; struct list_head *cur; struct map_lookup *map = NULL; @@ -4762,12 +4753,12 @@ static int __btrfs_alloc_chunk(struct btrfs_trans_handle *trans, if (type & BTRFS_BLOCK_GROUP_RAID5) { raid_stripe_len = find_raid56_stripe_len(ndevs - 1, - extent_root->stripesize); + info->stripesize); data_stripes = num_stripes - 1; } if (type & BTRFS_BLOCK_GROUP_RAID6) { raid_stripe_len = find_raid56_stripe_len(ndevs - 2, - extent_root->stripesize); + info->stripesize); data_stripes = num_stripes - 2; } @@ -4812,7 +4803,7 @@ static int __btrfs_alloc_chunk(struct btrfs_trans_handle *trans, j * stripe_size; } } - map->sector_size = extent_root->sectorsize; + map->sector_size = info->sectorsize; map->stripe_len = raid_stripe_len; map->io_align = raid_stripe_len; map->io_width = raid_stripe_len; @@ -4821,7 +4812,7 @@ static int __btrfs_alloc_chunk(struct btrfs_trans_handle *trans, num_bytes = stripe_size * data_stripes; - trace_btrfs_chunk_alloc(info->chunk_root, map, start, num_bytes); + trace_btrfs_chunk_alloc(info, map, start, num_bytes); em = alloc_extent_map(); if (!em) { @@ -4837,7 +4828,7 @@ static int __btrfs_alloc_chunk(struct btrfs_trans_handle *trans, em->block_len = em->len; em->orig_block_len = stripe_size; - em_tree = &extent_root->fs_info->mapping_tree.map_tree; + em_tree = &info->mapping_tree.map_tree; write_lock(&em_tree->lock); ret = add_extent_mapping(em_tree, em, 0); if (!ret) { @@ -4850,7 +4841,7 @@ static int __btrfs_alloc_chunk(struct btrfs_trans_handle *trans, goto error; } - ret = btrfs_make_block_group(trans, extent_root, 0, type, + ret = btrfs_make_block_group(trans, info, 0, type, BTRFS_FIRST_CHUNK_TREE_OBJECTID, start, num_bytes); if (ret) @@ -4861,13 +4852,12 @@ static int __btrfs_alloc_chunk(struct btrfs_trans_handle *trans, btrfs_device_set_bytes_used(map->stripes[i].dev, num_bytes); } - spin_lock(&extent_root->fs_info->free_chunk_lock); - extent_root->fs_info->free_chunk_space -= (stripe_size * - map->num_stripes); - spin_unlock(&extent_root->fs_info->free_chunk_lock); + spin_lock(&info->free_chunk_lock); + info->free_chunk_space -= (stripe_size * map->num_stripes); + spin_unlock(&info->free_chunk_lock); free_extent_map(em); - check_raid56_incompat_flag(extent_root->fs_info, type); + check_raid56_incompat_flag(info, type); kfree(devices_info); return 0; @@ -4889,11 +4879,12 @@ error: } int btrfs_finish_chunk_alloc(struct btrfs_trans_handle *trans, - struct btrfs_root *extent_root, + struct btrfs_fs_info *fs_info, u64 chunk_offset, u64 chunk_size) { + struct btrfs_root *extent_root = fs_info->extent_root; + struct btrfs_root *chunk_root = fs_info->chunk_root; struct btrfs_key key; - struct btrfs_root *chunk_root = extent_root->fs_info->chunk_root; struct btrfs_device *device; struct btrfs_chunk *chunk; struct btrfs_stripe *stripe; @@ -4906,20 +4897,19 @@ int btrfs_finish_chunk_alloc(struct btrfs_trans_handle *trans, int i = 0; int ret = 0; - em_tree = &extent_root->fs_info->mapping_tree.map_tree; + em_tree = &fs_info->mapping_tree.map_tree; read_lock(&em_tree->lock); em = lookup_extent_mapping(em_tree, chunk_offset, chunk_size); read_unlock(&em_tree->lock); if (!em) { - btrfs_crit(extent_root->fs_info, - "unable to find logical %Lu len %Lu", + btrfs_crit(fs_info, "unable to find logical %Lu len %Lu", chunk_offset, chunk_size); return -EINVAL; } if (em->start != chunk_offset || em->len != chunk_size) { - btrfs_crit(extent_root->fs_info, + btrfs_crit(fs_info, "found a bad mapping, wanted %Lu-%Lu, found %Lu-%Lu", chunk_offset, chunk_size, em->start, em->len); free_extent_map(em); @@ -4943,7 +4933,7 @@ int btrfs_finish_chunk_alloc(struct btrfs_trans_handle *trans, * at any time during that final phase of the device replace operation * (dev-replace.c:btrfs_dev_replace_finishing()). */ - mutex_lock(&chunk_root->fs_info->fs_devices->device_list_mutex); + mutex_lock(&fs_info->fs_devices->device_list_mutex); for (i = 0; i < map->num_stripes; i++) { device = map->stripes[i].dev; dev_offset = map->stripes[i].physical; @@ -4960,7 +4950,7 @@ int btrfs_finish_chunk_alloc(struct btrfs_trans_handle *trans, break; } if (ret) { - mutex_unlock(&chunk_root->fs_info->fs_devices->device_list_mutex); + mutex_unlock(&fs_info->fs_devices->device_list_mutex); goto out; } @@ -4974,7 +4964,7 @@ int btrfs_finish_chunk_alloc(struct btrfs_trans_handle *trans, memcpy(stripe->dev_uuid, device->uuid, BTRFS_UUID_SIZE); stripe++; } - mutex_unlock(&chunk_root->fs_info->fs_devices->device_list_mutex); + mutex_unlock(&fs_info->fs_devices->device_list_mutex); btrfs_set_stack_chunk_length(chunk, chunk_size); btrfs_set_stack_chunk_owner(chunk, extent_root->root_key.objectid); @@ -4983,7 +4973,7 @@ int btrfs_finish_chunk_alloc(struct btrfs_trans_handle *trans, btrfs_set_stack_chunk_num_stripes(chunk, map->num_stripes); btrfs_set_stack_chunk_io_align(chunk, map->stripe_len); btrfs_set_stack_chunk_io_width(chunk, map->stripe_len); - btrfs_set_stack_chunk_sector_size(chunk, extent_root->sectorsize); + btrfs_set_stack_chunk_sector_size(chunk, fs_info->sectorsize); btrfs_set_stack_chunk_sub_stripes(chunk, map->sub_stripes); key.objectid = BTRFS_FIRST_CHUNK_TREE_OBJECTID; @@ -4996,8 +4986,7 @@ int btrfs_finish_chunk_alloc(struct btrfs_trans_handle *trans, * TODO: Cleanup of inserted chunk root in case of * failure. */ - ret = btrfs_add_system_chunk(chunk_root, &key, chunk, - item_size); + ret = btrfs_add_system_chunk(fs_info, &key, chunk, item_size); } out: @@ -5014,36 +5003,34 @@ out: * bootstrap process of adding storage to a seed btrfs. */ int btrfs_alloc_chunk(struct btrfs_trans_handle *trans, - struct btrfs_root *extent_root, u64 type) + struct btrfs_fs_info *fs_info, u64 type) { u64 chunk_offset; - ASSERT(mutex_is_locked(&extent_root->fs_info->chunk_mutex)); - chunk_offset = find_next_chunk(extent_root->fs_info); - return __btrfs_alloc_chunk(trans, extent_root, chunk_offset, type); + ASSERT(mutex_is_locked(&fs_info->chunk_mutex)); + chunk_offset = find_next_chunk(fs_info); + return __btrfs_alloc_chunk(trans, fs_info, chunk_offset, type); } static noinline int init_first_rw_device(struct btrfs_trans_handle *trans, - struct btrfs_root *root, + struct btrfs_fs_info *fs_info, struct btrfs_device *device) { + struct btrfs_root *extent_root = fs_info->extent_root; u64 chunk_offset; u64 sys_chunk_offset; u64 alloc_profile; - struct btrfs_fs_info *fs_info = root->fs_info; - struct btrfs_root *extent_root = fs_info->extent_root; int ret; chunk_offset = find_next_chunk(fs_info); alloc_profile = btrfs_get_alloc_profile(extent_root, 0); - ret = __btrfs_alloc_chunk(trans, extent_root, chunk_offset, - alloc_profile); + ret = __btrfs_alloc_chunk(trans, fs_info, chunk_offset, alloc_profile); if (ret) return ret; - sys_chunk_offset = find_next_chunk(root->fs_info); + sys_chunk_offset = find_next_chunk(fs_info); alloc_profile = btrfs_get_alloc_profile(fs_info->chunk_root, 0); - ret = __btrfs_alloc_chunk(trans, extent_root, sys_chunk_offset, + ret = __btrfs_alloc_chunk(trans, fs_info, sys_chunk_offset, alloc_profile); return ret; } @@ -5066,11 +5053,11 @@ static inline int btrfs_chunk_max_errors(struct map_lookup *map) return max_errors; } -int btrfs_chunk_readonly(struct btrfs_root *root, u64 chunk_offset) +int btrfs_chunk_readonly(struct btrfs_fs_info *fs_info, u64 chunk_offset) { struct extent_map *em; struct map_lookup *map; - struct btrfs_mapping_tree *map_tree = &root->fs_info->mapping_tree; + struct btrfs_mapping_tree *map_tree = &fs_info->mapping_tree; int readonly = 0; int miss_ndevs = 0; int i; @@ -5182,14 +5169,14 @@ int btrfs_num_copies(struct btrfs_fs_info *fs_info, u64 logical, u64 len) return ret; } -unsigned long btrfs_full_stripe_len(struct btrfs_root *root, +unsigned long btrfs_full_stripe_len(struct btrfs_fs_info *fs_info, struct btrfs_mapping_tree *map_tree, u64 logical) { struct extent_map *em; struct map_lookup *map; struct extent_map_tree *em_tree = &map_tree->map_tree; - unsigned long len = root->sectorsize; + unsigned long len = fs_info->sectorsize; read_lock(&em_tree->lock); em = lookup_extent_mapping(em_tree, logical, len); @@ -5329,7 +5316,8 @@ void btrfs_put_bbio(struct btrfs_bio *bbio) kfree(bbio); } -static int __btrfs_map_block(struct btrfs_fs_info *fs_info, int op, +static int __btrfs_map_block(struct btrfs_fs_info *fs_info, + enum btrfs_map_op op, u64 logical, u64 *length, struct btrfs_bio **bbio_ret, int mirror_num, int need_raid_map) @@ -5414,7 +5402,7 @@ static int __btrfs_map_block(struct btrfs_fs_info *fs_info, int op, raid56_full_stripe_start *= full_stripe_len; } - if (op == REQ_OP_DISCARD) { + if (op == BTRFS_MAP_DISCARD) { /* we don't discard raid56 yet */ if (map->type & BTRFS_BLOCK_GROUP_RAID56_MASK) { ret = -EOPNOTSUPP; @@ -5427,7 +5415,7 @@ static int __btrfs_map_block(struct btrfs_fs_info *fs_info, int op, For other RAID types and for RAID[56] reads, just allow a single stripe (on a single disk). */ if ((map->type & BTRFS_BLOCK_GROUP_RAID56_MASK) && - (op == REQ_OP_WRITE)) { + (op == BTRFS_MAP_WRITE)) { max_len = stripe_len * nr_data_stripes(map) - (offset - raid56_full_stripe_start); } else { @@ -5452,8 +5440,8 @@ static int __btrfs_map_block(struct btrfs_fs_info *fs_info, int op, btrfs_dev_replace_set_lock_blocking(dev_replace); if (dev_replace_is_ongoing && mirror_num == map->num_stripes + 1 && - op != REQ_OP_WRITE && op != REQ_OP_DISCARD && - op != REQ_GET_READ_MIRRORS && dev_replace->tgtdev != NULL) { + op != BTRFS_MAP_WRITE && op != BTRFS_MAP_DISCARD && + op != BTRFS_MAP_GET_READ_MIRRORS && dev_replace->tgtdev != NULL) { /* * in dev-replace case, for repair case (that's the only * case where the mirror is selected explicitly when @@ -5474,7 +5462,7 @@ static int __btrfs_map_block(struct btrfs_fs_info *fs_info, int op, int found = 0; u64 physical_of_found = 0; - ret = __btrfs_map_block(fs_info, REQ_GET_READ_MIRRORS, + ret = __btrfs_map_block(fs_info, BTRFS_MAP_GET_READ_MIRRORS, logical, &tmp_length, &tmp_bbio, 0, 0); if (ret) { WARN_ON(tmp_bbio != NULL); @@ -5484,7 +5472,7 @@ static int __btrfs_map_block(struct btrfs_fs_info *fs_info, int op, tmp_num_stripes = tmp_bbio->num_stripes; if (mirror_num > tmp_num_stripes) { /* - * REQ_GET_READ_MIRRORS does not contain this + * BTRFS_MAP_GET_READ_MIRRORS does not contain this * mirror, that means that the requested area * is not left of the left cursor */ @@ -5540,17 +5528,17 @@ static int __btrfs_map_block(struct btrfs_fs_info *fs_info, int op, (offset + *length); if (map->type & BTRFS_BLOCK_GROUP_RAID0) { - if (op == REQ_OP_DISCARD) + if (op == BTRFS_MAP_DISCARD) num_stripes = min_t(u64, map->num_stripes, stripe_nr_end - stripe_nr_orig); stripe_nr = div_u64_rem(stripe_nr, map->num_stripes, &stripe_index); - if (op != REQ_OP_WRITE && op != REQ_OP_DISCARD && - op != REQ_GET_READ_MIRRORS) + if (op != BTRFS_MAP_WRITE && op != BTRFS_MAP_DISCARD && + op != BTRFS_MAP_GET_READ_MIRRORS) mirror_num = 1; } else if (map->type & BTRFS_BLOCK_GROUP_RAID1) { - if (op == REQ_OP_WRITE || op == REQ_OP_DISCARD || - op == REQ_GET_READ_MIRRORS) + if (op == BTRFS_MAP_WRITE || op == BTRFS_MAP_DISCARD || + op == BTRFS_MAP_GET_READ_MIRRORS) num_stripes = map->num_stripes; else if (mirror_num) stripe_index = mirror_num - 1; @@ -5563,8 +5551,8 @@ static int __btrfs_map_block(struct btrfs_fs_info *fs_info, int op, } } else if (map->type & BTRFS_BLOCK_GROUP_DUP) { - if (op == REQ_OP_WRITE || op == REQ_OP_DISCARD || - op == REQ_GET_READ_MIRRORS) { + if (op == BTRFS_MAP_WRITE || op == BTRFS_MAP_DISCARD || + op == BTRFS_MAP_GET_READ_MIRRORS) { num_stripes = map->num_stripes; } else if (mirror_num) { stripe_index = mirror_num - 1; @@ -5578,9 +5566,9 @@ static int __btrfs_map_block(struct btrfs_fs_info *fs_info, int op, stripe_nr = div_u64_rem(stripe_nr, factor, &stripe_index); stripe_index *= map->sub_stripes; - if (op == REQ_OP_WRITE || op == REQ_GET_READ_MIRRORS) + if (op == BTRFS_MAP_WRITE || op == BTRFS_MAP_GET_READ_MIRRORS) num_stripes = map->sub_stripes; - else if (op == REQ_OP_DISCARD) + else if (op == BTRFS_MAP_DISCARD) num_stripes = min_t(u64, map->sub_stripes * (stripe_nr_end - stripe_nr_orig), map->num_stripes); @@ -5598,7 +5586,7 @@ static int __btrfs_map_block(struct btrfs_fs_info *fs_info, int op, } else if (map->type & BTRFS_BLOCK_GROUP_RAID56_MASK) { if (need_raid_map && - (op == REQ_OP_WRITE || op == REQ_GET_READ_MIRRORS || + (op == BTRFS_MAP_WRITE || op == BTRFS_MAP_GET_READ_MIRRORS || mirror_num > 1)) { /* push stripe_nr back to the start of the full stripe */ stripe_nr = div_u64(raid56_full_stripe_start, @@ -5626,8 +5614,8 @@ static int __btrfs_map_block(struct btrfs_fs_info *fs_info, int op, /* We distribute the parity blocks across stripes */ div_u64_rem(stripe_nr + stripe_index, map->num_stripes, &stripe_index); - if ((op != REQ_OP_WRITE && op != REQ_OP_DISCARD && - op != REQ_GET_READ_MIRRORS) && mirror_num <= 1) + if ((op != BTRFS_MAP_WRITE && op != BTRFS_MAP_DISCARD && + op != BTRFS_MAP_GET_READ_MIRRORS) && mirror_num <= 1) mirror_num = 1; } } else { @@ -5650,9 +5638,9 @@ static int __btrfs_map_block(struct btrfs_fs_info *fs_info, int op, num_alloc_stripes = num_stripes; if (dev_replace_is_ongoing) { - if (op == REQ_OP_WRITE || op == REQ_OP_DISCARD) + if (op == BTRFS_MAP_WRITE || op == BTRFS_MAP_DISCARD) num_alloc_stripes <<= 1; - if (op == REQ_GET_READ_MIRRORS) + if (op == BTRFS_MAP_GET_READ_MIRRORS) num_alloc_stripes++; tgtdev_indexes = num_stripes; } @@ -5668,7 +5656,7 @@ static int __btrfs_map_block(struct btrfs_fs_info *fs_info, int op, /* build raid_map */ if (map->type & BTRFS_BLOCK_GROUP_RAID56_MASK && need_raid_map && - ((op == REQ_OP_WRITE || op == REQ_GET_READ_MIRRORS) || + ((op == BTRFS_MAP_WRITE || op == BTRFS_MAP_GET_READ_MIRRORS) || mirror_num > 1)) { u64 tmp; unsigned rot; @@ -5693,7 +5681,7 @@ static int __btrfs_map_block(struct btrfs_fs_info *fs_info, int op, RAID6_Q_STRIPE; } - if (op == REQ_OP_DISCARD) { + if (op == BTRFS_MAP_DISCARD) { u32 factor = 0; u32 sub_stripes = 0; u64 stripes_per_dev = 0; @@ -5773,7 +5761,7 @@ static int __btrfs_map_block(struct btrfs_fs_info *fs_info, int op, } } - if (op == REQ_OP_WRITE || op == REQ_GET_READ_MIRRORS) + if (op == BTRFS_MAP_WRITE || op == BTRFS_MAP_GET_READ_MIRRORS) max_errors = btrfs_chunk_max_errors(map); if (bbio->raid_map) @@ -5781,7 +5769,7 @@ static int __btrfs_map_block(struct btrfs_fs_info *fs_info, int op, tgtdev_indexes = 0; if (dev_replace_is_ongoing && - (op == REQ_OP_WRITE || op == REQ_OP_DISCARD) && + (op == BTRFS_MAP_WRITE || op == BTRFS_MAP_DISCARD) && dev_replace->tgtdev != NULL) { int index_where_to_add; u64 srcdev_devid = dev_replace->srcdev->devid; @@ -5816,7 +5804,8 @@ static int __btrfs_map_block(struct btrfs_fs_info *fs_info, int op, } } num_stripes = index_where_to_add; - } else if (dev_replace_is_ongoing && (op == REQ_GET_READ_MIRRORS) && + } else if (dev_replace_is_ongoing && + op == BTRFS_MAP_GET_READ_MIRRORS && dev_replace->tgtdev != NULL) { u64 srcdev_devid = dev_replace->srcdev->devid; int index_srcdev = 0; @@ -5888,7 +5877,7 @@ out: return ret; } -int btrfs_map_block(struct btrfs_fs_info *fs_info, int op, +int btrfs_map_block(struct btrfs_fs_info *fs_info, enum btrfs_map_op op, u64 logical, u64 *length, struct btrfs_bio **bbio_ret, int mirror_num) { @@ -5897,7 +5886,7 @@ int btrfs_map_block(struct btrfs_fs_info *fs_info, int op, } /* For Scrub/replace */ -int btrfs_map_sblock(struct btrfs_fs_info *fs_info, int op, +int btrfs_map_sblock(struct btrfs_fs_info *fs_info, enum btrfs_map_op op, u64 logical, u64 *length, struct btrfs_bio **bbio_ret, int mirror_num, int need_raid_map) @@ -6069,10 +6058,10 @@ static void btrfs_end_bio(struct bio *bio) * This will add one bio to the pending list for a device and make sure * the work struct is scheduled. */ -static noinline void btrfs_schedule_bio(struct btrfs_root *root, - struct btrfs_device *device, +static noinline void btrfs_schedule_bio(struct btrfs_device *device, struct bio *bio) { + struct btrfs_fs_info *fs_info = device->fs_info; int should_queue = 1; struct btrfs_pending_bios *pending_bios; @@ -6095,7 +6084,7 @@ static noinline void btrfs_schedule_bio(struct btrfs_root *root, * made progress against dirty pages when we've really just put it * on a queue for later */ - atomic_inc(&root->fs_info->nr_async_bios); + atomic_inc(&fs_info->nr_async_bios); WARN_ON(bio->bi_next); bio->bi_next = NULL; @@ -6117,15 +6106,14 @@ static noinline void btrfs_schedule_bio(struct btrfs_root *root, spin_unlock(&device->io_lock); if (should_queue) - btrfs_queue_work(root->fs_info->submit_workers, - &device->work); + btrfs_queue_work(fs_info->submit_workers, &device->work); } -static void submit_stripe_bio(struct btrfs_root *root, struct btrfs_bio *bbio, - struct bio *bio, u64 physical, int dev_nr, - int async) +static void submit_stripe_bio(struct btrfs_bio *bbio, struct bio *bio, + u64 physical, int dev_nr, int async) { struct btrfs_device *dev = bbio->stripes[dev_nr].dev; + struct btrfs_fs_info *fs_info = bbio->fs_info; bio->bi_private = bbio; btrfs_io_bio(bio)->stripe_index = dev_nr; @@ -6148,10 +6136,10 @@ static void submit_stripe_bio(struct btrfs_root *root, struct btrfs_bio *bbio, #endif bio->bi_bdev = dev->bdev; - btrfs_bio_counter_inc_noblocked(root->fs_info); + btrfs_bio_counter_inc_noblocked(fs_info); if (async) - btrfs_schedule_bio(root, dev, bio); + btrfs_schedule_bio(dev, bio); else btrfsic_submit_bio(bio); } @@ -6170,7 +6158,7 @@ static void bbio_error(struct btrfs_bio *bbio, struct bio *bio, u64 logical) } } -int btrfs_map_bio(struct btrfs_root *root, struct bio *bio, +int btrfs_map_bio(struct btrfs_fs_info *fs_info, struct bio *bio, int mirror_num, int async_submit) { struct btrfs_device *dev; @@ -6186,11 +6174,11 @@ int btrfs_map_bio(struct btrfs_root *root, struct bio *bio, length = bio->bi_iter.bi_size; map_length = length; - btrfs_bio_counter_inc_blocked(root->fs_info); - ret = __btrfs_map_block(root->fs_info, bio_op(bio), logical, + btrfs_bio_counter_inc_blocked(fs_info); + ret = __btrfs_map_block(fs_info, bio_op(bio), logical, &map_length, &bbio, mirror_num, 1); if (ret) { - btrfs_bio_counter_dec(root->fs_info); + btrfs_bio_counter_dec(fs_info); return ret; } @@ -6198,7 +6186,7 @@ int btrfs_map_bio(struct btrfs_root *root, struct bio *bio, bbio->orig_bio = first_bio; bbio->private = first_bio->bi_private; bbio->end_io = first_bio->bi_end_io; - bbio->fs_info = root->fs_info; + bbio->fs_info = fs_info; atomic_set(&bbio->stripes_pending, bbio->num_stripes); if ((bbio->map_type & BTRFS_BLOCK_GROUP_RAID56_MASK) && @@ -6206,18 +6194,19 @@ int btrfs_map_bio(struct btrfs_root *root, struct bio *bio, /* In this case, map_length has been set to the length of a single stripe; not the whole write */ if (bio_op(bio) == REQ_OP_WRITE) { - ret = raid56_parity_write(root, bio, bbio, map_length); + ret = raid56_parity_write(fs_info, bio, bbio, + map_length); } else { - ret = raid56_parity_recover(root, bio, bbio, map_length, - mirror_num, 1); + ret = raid56_parity_recover(fs_info, bio, bbio, + map_length, mirror_num, 1); } - btrfs_bio_counter_dec(root->fs_info); + btrfs_bio_counter_dec(fs_info); return ret; } if (map_length < length) { - btrfs_crit(root->fs_info, + btrfs_crit(fs_info, "mapping failed logical %llu bio len %llu len %llu", logical, length, map_length); BUG(); @@ -6237,11 +6226,10 @@ int btrfs_map_bio(struct btrfs_root *root, struct bio *bio, } else bio = first_bio; - submit_stripe_bio(root, bbio, bio, - bbio->stripes[dev_nr].physical, dev_nr, - async_submit); + submit_stripe_bio(bbio, bio, bbio->stripes[dev_nr].physical, + dev_nr, async_submit); } - btrfs_bio_counter_dec(root->fs_info); + btrfs_bio_counter_dec(fs_info); return 0; } @@ -6265,8 +6253,7 @@ struct btrfs_device *btrfs_find_device(struct btrfs_fs_info *fs_info, u64 devid, return NULL; } -static struct btrfs_device *add_missing_dev(struct btrfs_root *root, - struct btrfs_fs_devices *fs_devices, +static struct btrfs_device *add_missing_dev(struct btrfs_fs_devices *fs_devices, u64 devid, u8 *dev_uuid) { struct btrfs_device *device; @@ -6337,7 +6324,7 @@ struct btrfs_device *btrfs_alloc_device(struct btrfs_fs_info *fs_info, } /* Return -EIO if any error, otherwise return 0. */ -static int btrfs_check_chunk_valid(struct btrfs_root *root, +static int btrfs_check_chunk_valid(struct btrfs_fs_info *fs_info, struct extent_buffer *leaf, struct btrfs_chunk *chunk, u64 logical) { @@ -6354,33 +6341,31 @@ static int btrfs_check_chunk_valid(struct btrfs_root *root, type = btrfs_chunk_type(leaf, chunk); if (!num_stripes) { - btrfs_err(root->fs_info, "invalid chunk num_stripes: %u", + btrfs_err(fs_info, "invalid chunk num_stripes: %u", num_stripes); return -EIO; } - if (!IS_ALIGNED(logical, root->sectorsize)) { - btrfs_err(root->fs_info, - "invalid chunk logical %llu", logical); + if (!IS_ALIGNED(logical, fs_info->sectorsize)) { + btrfs_err(fs_info, "invalid chunk logical %llu", logical); return -EIO; } - if (btrfs_chunk_sector_size(leaf, chunk) != root->sectorsize) { - btrfs_err(root->fs_info, "invalid chunk sectorsize %u", + if (btrfs_chunk_sector_size(leaf, chunk) != fs_info->sectorsize) { + btrfs_err(fs_info, "invalid chunk sectorsize %u", btrfs_chunk_sector_size(leaf, chunk)); return -EIO; } - if (!length || !IS_ALIGNED(length, root->sectorsize)) { - btrfs_err(root->fs_info, - "invalid chunk length %llu", length); + if (!length || !IS_ALIGNED(length, fs_info->sectorsize)) { + btrfs_err(fs_info, "invalid chunk length %llu", length); return -EIO; } if (!is_power_of_2(stripe_len) || stripe_len != BTRFS_STRIPE_LEN) { - btrfs_err(root->fs_info, "invalid chunk stripe length: %llu", + btrfs_err(fs_info, "invalid chunk stripe length: %llu", stripe_len); return -EIO; } if (~(BTRFS_BLOCK_GROUP_TYPE_MASK | BTRFS_BLOCK_GROUP_PROFILE_MASK) & type) { - btrfs_err(root->fs_info, "unrecognized chunk type: %llu", + btrfs_err(fs_info, "unrecognized chunk type: %llu", ~(BTRFS_BLOCK_GROUP_TYPE_MASK | BTRFS_BLOCK_GROUP_PROFILE_MASK) & btrfs_chunk_type(leaf, chunk)); @@ -6393,7 +6378,7 @@ static int btrfs_check_chunk_valid(struct btrfs_root *root, (type & BTRFS_BLOCK_GROUP_DUP && num_stripes > 2) || ((type & BTRFS_BLOCK_GROUP_PROFILE_MASK) == 0 && num_stripes != 1)) { - btrfs_err(root->fs_info, + btrfs_err(fs_info, "invalid num_stripes:sub_stripes %u:%u for profile %llu", num_stripes, sub_stripes, type & BTRFS_BLOCK_GROUP_PROFILE_MASK); @@ -6403,11 +6388,11 @@ static int btrfs_check_chunk_valid(struct btrfs_root *root, return 0; } -static int read_one_chunk(struct btrfs_root *root, struct btrfs_key *key, +static int read_one_chunk(struct btrfs_fs_info *fs_info, struct btrfs_key *key, struct extent_buffer *leaf, struct btrfs_chunk *chunk) { - struct btrfs_mapping_tree *map_tree = &root->fs_info->mapping_tree; + struct btrfs_mapping_tree *map_tree = &fs_info->mapping_tree; struct map_lookup *map; struct extent_map *em; u64 logical; @@ -6424,7 +6409,7 @@ static int read_one_chunk(struct btrfs_root *root, struct btrfs_key *key, stripe_len = btrfs_chunk_stripe_len(leaf, chunk); num_stripes = btrfs_chunk_num_stripes(leaf, chunk); - ret = btrfs_check_chunk_valid(root, leaf, chunk, logical); + ret = btrfs_check_chunk_valid(fs_info, leaf, chunk, logical); if (ret) return ret; @@ -6471,23 +6456,22 @@ static int read_one_chunk(struct btrfs_root *root, struct btrfs_key *key, read_extent_buffer(leaf, uuid, (unsigned long) btrfs_stripe_dev_uuid_nr(chunk, i), BTRFS_UUID_SIZE); - map->stripes[i].dev = btrfs_find_device(root->fs_info, devid, + map->stripes[i].dev = btrfs_find_device(fs_info, devid, uuid, NULL); if (!map->stripes[i].dev && - !btrfs_test_opt(root->fs_info, DEGRADED)) { + !btrfs_test_opt(fs_info, DEGRADED)) { free_extent_map(em); return -EIO; } if (!map->stripes[i].dev) { map->stripes[i].dev = - add_missing_dev(root, root->fs_info->fs_devices, - devid, uuid); + add_missing_dev(fs_info->fs_devices, devid, + uuid); if (!map->stripes[i].dev) { free_extent_map(em); return -EIO; } - btrfs_warn(root->fs_info, - "devid %llu uuid %pU is missing", + btrfs_warn(fs_info, "devid %llu uuid %pU is missing", devid, uuid); } map->stripes[i].dev->in_fs_metadata = 1; @@ -6525,7 +6509,7 @@ static void fill_device_from_item(struct extent_buffer *leaf, read_extent_buffer(leaf, device->uuid, ptr, BTRFS_UUID_SIZE); } -static struct btrfs_fs_devices *open_seed_devices(struct btrfs_root *root, +static struct btrfs_fs_devices *open_seed_devices(struct btrfs_fs_info *fs_info, u8 *fsid) { struct btrfs_fs_devices *fs_devices; @@ -6533,7 +6517,7 @@ static struct btrfs_fs_devices *open_seed_devices(struct btrfs_root *root, BUG_ON(!mutex_is_locked(&uuid_mutex)); - fs_devices = root->fs_info->fs_devices->seed; + fs_devices = fs_info->fs_devices->seed; while (fs_devices) { if (!memcmp(fs_devices->fsid, fsid, BTRFS_UUID_SIZE)) return fs_devices; @@ -6543,7 +6527,7 @@ static struct btrfs_fs_devices *open_seed_devices(struct btrfs_root *root, fs_devices = find_fsid(fsid); if (!fs_devices) { - if (!btrfs_test_opt(root->fs_info, DEGRADED)) + if (!btrfs_test_opt(fs_info, DEGRADED)) return ERR_PTR(-ENOENT); fs_devices = alloc_fs_devices(fsid); @@ -6560,7 +6544,7 @@ static struct btrfs_fs_devices *open_seed_devices(struct btrfs_root *root, return fs_devices; ret = __btrfs_open_devices(fs_devices, FMODE_READ, - root->fs_info->bdev_holder); + fs_info->bdev_holder); if (ret) { free_fs_devices(fs_devices); fs_devices = ERR_PTR(ret); @@ -6574,17 +6558,17 @@ static struct btrfs_fs_devices *open_seed_devices(struct btrfs_root *root, goto out; } - fs_devices->seed = root->fs_info->fs_devices->seed; - root->fs_info->fs_devices->seed = fs_devices; + fs_devices->seed = fs_info->fs_devices->seed; + fs_info->fs_devices->seed = fs_devices; out: return fs_devices; } -static int read_one_dev(struct btrfs_root *root, +static int read_one_dev(struct btrfs_fs_info *fs_info, struct extent_buffer *leaf, struct btrfs_dev_item *dev_item) { - struct btrfs_fs_devices *fs_devices = root->fs_info->fs_devices; + struct btrfs_fs_devices *fs_devices = fs_info->fs_devices; struct btrfs_device *device; u64 devid; int ret; @@ -6597,24 +6581,24 @@ static int read_one_dev(struct btrfs_root *root, read_extent_buffer(leaf, fs_uuid, btrfs_device_fsid(dev_item), BTRFS_UUID_SIZE); - if (memcmp(fs_uuid, root->fs_info->fsid, BTRFS_UUID_SIZE)) { - fs_devices = open_seed_devices(root, fs_uuid); + if (memcmp(fs_uuid, fs_info->fsid, BTRFS_UUID_SIZE)) { + fs_devices = open_seed_devices(fs_info, fs_uuid); if (IS_ERR(fs_devices)) return PTR_ERR(fs_devices); } - device = btrfs_find_device(root->fs_info, devid, dev_uuid, fs_uuid); + device = btrfs_find_device(fs_info, devid, dev_uuid, fs_uuid); if (!device) { - if (!btrfs_test_opt(root->fs_info, DEGRADED)) + if (!btrfs_test_opt(fs_info, DEGRADED)) return -EIO; - device = add_missing_dev(root, fs_devices, devid, dev_uuid); + device = add_missing_dev(fs_devices, devid, dev_uuid); if (!device) return -ENOMEM; - btrfs_warn(root->fs_info, "devid %llu uuid %pU missing", + btrfs_warn(fs_info, "devid %llu uuid %pU missing", devid, dev_uuid); } else { - if (!device->bdev && !btrfs_test_opt(root->fs_info, DEGRADED)) + if (!device->bdev && !btrfs_test_opt(fs_info, DEGRADED)) return -EIO; if(!device->bdev && !device->missing) { @@ -6643,7 +6627,7 @@ static int read_one_dev(struct btrfs_root *root, } } - if (device->fs_devices != root->fs_info->fs_devices) { + if (device->fs_devices != fs_info->fs_devices) { BUG_ON(device->writeable); if (device->generation != btrfs_device_generation(leaf, dev_item)) @@ -6654,18 +6638,18 @@ static int read_one_dev(struct btrfs_root *root, device->in_fs_metadata = 1; if (device->writeable && !device->is_tgtdev_for_dev_replace) { device->fs_devices->total_rw_bytes += device->total_bytes; - spin_lock(&root->fs_info->free_chunk_lock); - root->fs_info->free_chunk_space += device->total_bytes - + spin_lock(&fs_info->free_chunk_lock); + fs_info->free_chunk_space += device->total_bytes - device->bytes_used; - spin_unlock(&root->fs_info->free_chunk_lock); + spin_unlock(&fs_info->free_chunk_lock); } ret = 0; return ret; } -int btrfs_read_sys_array(struct btrfs_root *root) +int btrfs_read_sys_array(struct btrfs_fs_info *fs_info) { - struct btrfs_fs_info *fs_info = root->fs_info; + struct btrfs_root *root = fs_info->tree_root; struct btrfs_super_block *super_copy = fs_info->super_copy; struct extent_buffer *sb; struct btrfs_disk_key *disk_key; @@ -6680,13 +6664,13 @@ int btrfs_read_sys_array(struct btrfs_root *root) u64 type; struct btrfs_key key; - ASSERT(BTRFS_SUPER_INFO_SIZE <= root->nodesize); + ASSERT(BTRFS_SUPER_INFO_SIZE <= fs_info->nodesize); /* * This will create extent buffer of nodesize, superblock size is * fixed to BTRFS_SUPER_INFO_SIZE. If nodesize > sb size, this will * overallocate but we can keep it as-is, only the first page is used. */ - sb = btrfs_find_create_tree_block(root, BTRFS_SUPER_INFO_OFFSET); + sb = btrfs_find_create_tree_block(fs_info, BTRFS_SUPER_INFO_OFFSET); if (IS_ERR(sb)) return PTR_ERR(sb); set_extent_buffer_uptodate(sb); @@ -6757,7 +6741,7 @@ int btrfs_read_sys_array(struct btrfs_root *root) if (cur_offset + len > array_size) goto out_short_read; - ret = read_one_chunk(root, &key, sb, chunk); + ret = read_one_chunk(fs_info, &key, sb, chunk); if (ret) break; } else { @@ -6783,8 +6767,9 @@ out_short_read: return -EIO; } -int btrfs_read_chunk_tree(struct btrfs_root *root) +int btrfs_read_chunk_tree(struct btrfs_fs_info *fs_info) { + struct btrfs_root *root = fs_info->chunk_root; struct btrfs_path *path; struct extent_buffer *leaf; struct btrfs_key key; @@ -6793,14 +6778,12 @@ int btrfs_read_chunk_tree(struct btrfs_root *root) int slot; u64 total_dev = 0; - root = root->fs_info->chunk_root; - path = btrfs_alloc_path(); if (!path) return -ENOMEM; mutex_lock(&uuid_mutex); - lock_chunks(root); + mutex_lock(&fs_info->chunk_mutex); /* * Read all device items, and then all the chunk items. All @@ -6830,14 +6813,14 @@ int btrfs_read_chunk_tree(struct btrfs_root *root) struct btrfs_dev_item *dev_item; dev_item = btrfs_item_ptr(leaf, slot, struct btrfs_dev_item); - ret = read_one_dev(root, leaf, dev_item); + ret = read_one_dev(fs_info, leaf, dev_item); if (ret) goto error; total_dev++; } else if (found_key.type == BTRFS_CHUNK_ITEM_KEY) { struct btrfs_chunk *chunk; chunk = btrfs_item_ptr(leaf, slot, struct btrfs_chunk); - ret = read_one_chunk(root, &found_key, leaf, chunk); + ret = read_one_chunk(fs_info, &found_key, leaf, chunk); if (ret) goto error; } @@ -6848,26 +6831,26 @@ int btrfs_read_chunk_tree(struct btrfs_root *root) * After loading chunk tree, we've got all device information, * do another round of validation checks. */ - if (total_dev != root->fs_info->fs_devices->total_devices) { - btrfs_err(root->fs_info, + if (total_dev != fs_info->fs_devices->total_devices) { + btrfs_err(fs_info, "super_num_devices %llu mismatch with num_devices %llu found here", - btrfs_super_num_devices(root->fs_info->super_copy), + btrfs_super_num_devices(fs_info->super_copy), total_dev); ret = -EINVAL; goto error; } - if (btrfs_super_total_bytes(root->fs_info->super_copy) < - root->fs_info->fs_devices->total_rw_bytes) { - btrfs_err(root->fs_info, + if (btrfs_super_total_bytes(fs_info->super_copy) < + fs_info->fs_devices->total_rw_bytes) { + btrfs_err(fs_info, "super_total_bytes %llu mismatch with fs_devices total_rw_bytes %llu", - btrfs_super_total_bytes(root->fs_info->super_copy), - root->fs_info->fs_devices->total_rw_bytes); + btrfs_super_total_bytes(fs_info->super_copy), + fs_info->fs_devices->total_rw_bytes); ret = -EINVAL; goto error; } ret = 0; error: - unlock_chunks(root); + mutex_unlock(&fs_info->chunk_mutex); mutex_unlock(&uuid_mutex); btrfs_free_path(path); @@ -6882,7 +6865,7 @@ void btrfs_init_devices_late(struct btrfs_fs_info *fs_info) while (fs_devices) { mutex_lock(&fs_devices->device_list_mutex); list_for_each_entry(device, &fs_devices->devices, dev_list) - device->dev_root = fs_info->dev_root; + device->fs_info = fs_info; mutex_unlock(&fs_devices->device_list_mutex); fs_devices = fs_devices->seed; @@ -6959,9 +6942,10 @@ out: } static int update_dev_stat_item(struct btrfs_trans_handle *trans, - struct btrfs_root *dev_root, + struct btrfs_fs_info *fs_info, struct btrfs_device *device) { + struct btrfs_root *dev_root = fs_info->dev_root; struct btrfs_path *path; struct btrfs_key key; struct extent_buffer *eb; @@ -6977,7 +6961,7 @@ static int update_dev_stat_item(struct btrfs_trans_handle *trans, BUG_ON(!path); ret = btrfs_search_slot(trans, dev_root, &key, path, -1, 1); if (ret < 0) { - btrfs_warn_in_rcu(dev_root->fs_info, + btrfs_warn_in_rcu(fs_info, "error %d while searching for dev_stats item for device %s", ret, rcu_str_deref(device->name)); goto out; @@ -6988,7 +6972,7 @@ static int update_dev_stat_item(struct btrfs_trans_handle *trans, /* need to delete old one and insert a new one */ ret = btrfs_del_item(trans, dev_root, path); if (ret != 0) { - btrfs_warn_in_rcu(dev_root->fs_info, + btrfs_warn_in_rcu(fs_info, "delete too small dev_stats item for device %s failed %d", rcu_str_deref(device->name), ret); goto out; @@ -7002,7 +6986,7 @@ static int update_dev_stat_item(struct btrfs_trans_handle *trans, ret = btrfs_insert_empty_item(trans, dev_root, path, &key, sizeof(*ptr)); if (ret < 0) { - btrfs_warn_in_rcu(dev_root->fs_info, + btrfs_warn_in_rcu(fs_info, "insert dev_stats item for device %s failed %d", rcu_str_deref(device->name), ret); goto out; @@ -7027,7 +7011,6 @@ out: int btrfs_run_dev_stats(struct btrfs_trans_handle *trans, struct btrfs_fs_info *fs_info) { - struct btrfs_root *dev_root = fs_info->dev_root; struct btrfs_fs_devices *fs_devices = fs_info->fs_devices; struct btrfs_device *device; int stats_cnt; @@ -7039,7 +7022,7 @@ int btrfs_run_dev_stats(struct btrfs_trans_handle *trans, continue; stats_cnt = atomic_read(&device->dev_stats_ccnt); - ret = update_dev_stat_item(trans, dev_root, device); + ret = update_dev_stat_item(trans, fs_info, device); if (!ret) atomic_sub(stats_cnt, &device->dev_stats_ccnt); } @@ -7058,7 +7041,7 @@ static void btrfs_dev_stat_print_on_error(struct btrfs_device *dev) { if (!dev->dev_stats_valid) return; - btrfs_err_rl_in_rcu(dev->dev_root->fs_info, + btrfs_err_rl_in_rcu(dev->fs_info, "bdev %s errs: wr %u, rd %u, flush %u, corrupt %u, gen %u", rcu_str_deref(dev->name), btrfs_dev_stat_read(dev, BTRFS_DEV_STAT_WRITE_ERRS), @@ -7078,7 +7061,7 @@ static void btrfs_dev_stat_print_on_load(struct btrfs_device *dev) if (i == BTRFS_DEV_STAT_VALUES_MAX) return; /* all values == 0, suppress message */ - btrfs_info_in_rcu(dev->dev_root->fs_info, + btrfs_info_in_rcu(dev->fs_info, "bdev %s errs: wr %u, rd %u, flush %u, corrupt %u, gen %u", rcu_str_deref(dev->name), btrfs_dev_stat_read(dev, BTRFS_DEV_STAT_WRITE_ERRS), @@ -7088,24 +7071,22 @@ static void btrfs_dev_stat_print_on_load(struct btrfs_device *dev) btrfs_dev_stat_read(dev, BTRFS_DEV_STAT_GENERATION_ERRS)); } -int btrfs_get_dev_stats(struct btrfs_root *root, +int btrfs_get_dev_stats(struct btrfs_fs_info *fs_info, struct btrfs_ioctl_get_dev_stats *stats) { struct btrfs_device *dev; - struct btrfs_fs_devices *fs_devices = root->fs_info->fs_devices; + struct btrfs_fs_devices *fs_devices = fs_info->fs_devices; int i; mutex_lock(&fs_devices->device_list_mutex); - dev = btrfs_find_device(root->fs_info, stats->devid, NULL, NULL); + dev = btrfs_find_device(fs_info, stats->devid, NULL, NULL); mutex_unlock(&fs_devices->device_list_mutex); if (!dev) { - btrfs_warn(root->fs_info, - "get dev_stats failed, device not found"); + btrfs_warn(fs_info, "get dev_stats failed, device not found"); return -ENODEV; } else if (!dev->dev_stats_valid) { - btrfs_warn(root->fs_info, - "get dev_stats failed, not yet valid"); + btrfs_warn(fs_info, "get dev_stats failed, not yet valid"); return -ENODEV; } else if (stats->flags & BTRFS_DEV_STATS_RESET) { for (i = 0; i < BTRFS_DEV_STAT_VALUES_MAX; i++) { @@ -7168,18 +7149,18 @@ void btrfs_update_commit_device_size(struct btrfs_fs_info *fs_info) return; mutex_lock(&fs_devices->device_list_mutex); - lock_chunks(fs_info->dev_root); + mutex_lock(&fs_info->chunk_mutex); list_for_each_entry_safe(curr, next, &fs_devices->resized_devices, resized_list) { list_del_init(&curr->resized_list); curr->commit_total_bytes = curr->disk_total_bytes; } - unlock_chunks(fs_info->dev_root); + mutex_unlock(&fs_info->chunk_mutex); mutex_unlock(&fs_devices->device_list_mutex); } /* Must be invoked during the transaction commit */ -void btrfs_update_commit_device_bytes_used(struct btrfs_root *root, +void btrfs_update_commit_device_bytes_used(struct btrfs_fs_info *fs_info, struct btrfs_transaction *transaction) { struct extent_map *em; @@ -7191,7 +7172,7 @@ void btrfs_update_commit_device_bytes_used(struct btrfs_root *root, return; /* In order to kick the device replace finish process */ - lock_chunks(root); + mutex_lock(&fs_info->chunk_mutex); list_for_each_entry(em, &transaction->pending_chunks, list) { map = em->map_lookup; @@ -7200,7 +7181,7 @@ void btrfs_update_commit_device_bytes_used(struct btrfs_root *root, dev->commit_bytes_used = dev->bytes_used; } } - unlock_chunks(root); + mutex_unlock(&fs_info->chunk_mutex); } void btrfs_set_fs_info_ptr(struct btrfs_fs_info *fs_info) |