From 5b4aacefb8fbfc996e68b9b083d30f8bc0972449 Mon Sep 17 00:00:00 2001 From: Jeff Mahoney Date: Tue, 21 Jun 2016 10:40:19 -0400 Subject: [PATCH] btrfs: call functions that overwrite their root parameter with fs_info There are 11 functions that accept a root parameter and immediately overwrite it. We can pass those an fs_info pointer instead. Signed-off-by: Jeff Mahoney Signed-off-by: David Sterba --- fs/btrfs/ctree.h | 4 +-- fs/btrfs/disk-io.c | 4 +-- fs/btrfs/extent-tree.c | 17 +++++------ fs/btrfs/file-item.c | 5 ++-- fs/btrfs/free-space-cache.c | 5 ++-- fs/btrfs/free-space-cache.h | 2 +- fs/btrfs/transaction.c | 9 +++--- fs/btrfs/tree-log.c | 6 ++-- fs/btrfs/volumes.c | 56 +++++++++++++++++-------------------- fs/btrfs/volumes.h | 4 +-- 10 files changed, 52 insertions(+), 60 deletions(-) diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 1b25a460ecea..51cd757461c4 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -2639,7 +2639,7 @@ int btrfs_setup_space_cache(struct btrfs_trans_handle *trans, struct btrfs_root *root); int btrfs_extent_readonly(struct btrfs_root *root, u64 bytenr); int btrfs_free_block_groups(struct btrfs_fs_info *info); -int btrfs_read_block_groups(struct btrfs_root *root); +int btrfs_read_block_groups(struct btrfs_fs_info *info); int btrfs_can_relocate(struct btrfs_root *root, u64 bytenr); int btrfs_make_block_group(struct btrfs_trans_handle *trans, struct btrfs_root *root, u64 bytes_used, @@ -3055,7 +3055,7 @@ int btrfs_find_name_in_ext_backref(struct btrfs_path *path, /* file-item.c */ struct btrfs_dio_private; int btrfs_del_csums(struct btrfs_trans_handle *trans, - struct btrfs_root *root, u64 bytenr, u64 len); + struct btrfs_fs_info *fs_info, u64 bytenr, u64 len); int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode, struct bio *bio, u32 *dst); int btrfs_lookup_bio_sums_dio(struct btrfs_root *root, struct inode *inode, diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 811662cce977..92c2aea5118b 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -2937,7 +2937,7 @@ int open_ctree(struct super_block *sb, read_extent_buffer(chunk_root->node, fs_info->chunk_tree_uuid, btrfs_header_chunk_tree_uuid(chunk_root->node), BTRFS_UUID_SIZE); - ret = btrfs_read_chunk_tree(chunk_root); + ret = btrfs_read_chunk_tree(fs_info); if (ret) { btrfs_err(fs_info, "failed to read chunk tree: %d", ret); goto fail_tree_roots; @@ -3038,7 +3038,7 @@ retry_root_backup: goto fail_sysfs; } - ret = btrfs_read_block_groups(fs_info->extent_root); + ret = btrfs_read_block_groups(fs_info); if (ret) { btrfs_err(fs_info, "failed to read block groups: %d", ret); goto fail_sysfs; diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 0d80136206b1..13ef5d53943b 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -2414,7 +2414,7 @@ static int run_one_delayed_ref(struct btrfs_trans_handle *trans, btrfs_pin_extent(root, node->bytenr, node->num_bytes, 1); if (head->is_data) { - ret = btrfs_del_csums(trans, root, + ret = btrfs_del_csums(trans, root->fs_info, node->bytenr, node->num_bytes); } @@ -3622,7 +3622,8 @@ again: if (cache->disk_cache_state == BTRFS_DC_SETUP) { cache->io_ctl.inode = NULL; - ret = btrfs_write_out_cache(root, trans, cache, path); + ret = btrfs_write_out_cache(root->fs_info, trans, + cache, path); if (ret == 0 && cache->io_ctl.inode) { num_started++; should_put = 0; @@ -3774,7 +3775,8 @@ int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, if (!ret && cache->disk_cache_state == BTRFS_DC_SETUP) { cache->io_ctl.inode = NULL; - ret = btrfs_write_out_cache(root, trans, cache, path); + ret = btrfs_write_out_cache(root->fs_info, trans, + cache, path); if (ret == 0 && cache->io_ctl.inode) { num_started++; should_put = 0; @@ -7068,7 +7070,7 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans, btrfs_release_path(path); if (is_data) { - ret = btrfs_del_csums(trans, root, bytenr, num_bytes); + ret = btrfs_del_csums(trans, info, bytenr, num_bytes); if (ret) { btrfs_abort_transaction(trans, ret); goto out; @@ -9925,12 +9927,12 @@ btrfs_create_block_group_cache(struct btrfs_root *root, u64 start, u64 size) return cache; } -int btrfs_read_block_groups(struct btrfs_root *root) +int btrfs_read_block_groups(struct btrfs_fs_info *info) { + struct btrfs_root *root = info->extent_root; struct btrfs_path *path; int ret; struct btrfs_block_group_cache *cache; - struct btrfs_fs_info *info = root->fs_info; struct btrfs_space_info *space_info; struct btrfs_key key; struct btrfs_key found_key; @@ -9943,7 +9945,6 @@ int btrfs_read_block_groups(struct btrfs_root *root) feature = btrfs_super_incompat_flags(info->super_copy); mixed = !!(feature & BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS); - root = info->extent_root; key.objectid = 0; key.offset = 0; key.type = BTRFS_BLOCK_GROUP_ITEM_KEY; @@ -10733,7 +10734,7 @@ void btrfs_delete_unused_bgs(struct btrfs_fs_info *fs_info) * Btrfs_remove_chunk will abort the transaction if things go * horribly wrong. */ - ret = btrfs_remove_chunk(trans, root, + ret = btrfs_remove_chunk(trans, fs_info, block_group->key.objectid); if (ret) { diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c index 5e74178ba9d9..41c1145cbce1 100644 --- a/fs/btrfs/file-item.c +++ b/fs/btrfs/file-item.c @@ -590,8 +590,9 @@ static noinline void truncate_one_csum(struct btrfs_root *root, * range of bytes. */ int btrfs_del_csums(struct btrfs_trans_handle *trans, - struct btrfs_root *root, u64 bytenr, u64 len) + struct btrfs_fs_info *fs_info, u64 bytenr, u64 len) { + struct btrfs_root *root = fs_info->csum_root; struct btrfs_path *path; struct btrfs_key key; u64 end_byte = bytenr + len; @@ -601,8 +602,6 @@ int btrfs_del_csums(struct btrfs_trans_handle *trans, u16 csum_size = btrfs_super_csum_size(root->fs_info->super_copy); int blocksize_bits = root->fs_info->sb->s_blocksize_bits; - root = root->fs_info->csum_root; - path = btrfs_alloc_path(); if (!path) return -ENOMEM; diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c index c698dccb3757..a538133aec63 100644 --- a/fs/btrfs/free-space-cache.c +++ b/fs/btrfs/free-space-cache.c @@ -1350,17 +1350,16 @@ out_nospc: goto out; } -int btrfs_write_out_cache(struct btrfs_root *root, +int btrfs_write_out_cache(struct btrfs_fs_info *fs_info, struct btrfs_trans_handle *trans, struct btrfs_block_group_cache *block_group, struct btrfs_path *path) { + struct btrfs_root *root = fs_info->tree_root; struct btrfs_free_space_ctl *ctl = block_group->free_space_ctl; struct inode *inode; int ret = 0; - root = root->fs_info->tree_root; - spin_lock(&block_group->lock); if (block_group->disk_cache_state < BTRFS_DC_SETUP) { spin_unlock(&block_group->lock); diff --git a/fs/btrfs/free-space-cache.h b/fs/btrfs/free-space-cache.h index 363fdd955e5d..70e7a7cc15f3 100644 --- a/fs/btrfs/free-space-cache.h +++ b/fs/btrfs/free-space-cache.h @@ -72,7 +72,7 @@ int btrfs_wait_cache_io(struct btrfs_root *root, struct btrfs_block_group_cache *block_group, struct btrfs_io_ctl *io_ctl, struct btrfs_path *path, u64 offset); -int btrfs_write_out_cache(struct btrfs_root *root, +int btrfs_write_out_cache(struct btrfs_fs_info *fs_info, struct btrfs_trans_handle *trans, struct btrfs_block_group_cache *block_group, struct btrfs_path *path); diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c index 9517de0e668c..88be1f812391 100644 --- a/fs/btrfs/transaction.c +++ b/fs/btrfs/transaction.c @@ -1219,10 +1219,9 @@ void btrfs_add_dead_root(struct btrfs_root *root) * update all the cowonly tree roots on disk */ static noinline int commit_fs_roots(struct btrfs_trans_handle *trans, - struct btrfs_root *root) + struct btrfs_fs_info *fs_info) { struct btrfs_root *gang[8]; - struct btrfs_fs_info *fs_info = root->fs_info; int i; int ret; int err = 0; @@ -1236,7 +1235,7 @@ static noinline int commit_fs_roots(struct btrfs_trans_handle *trans, if (ret == 0) break; for (i = 0; i < ret; i++) { - root = gang[i]; + struct btrfs_root *root = gang[i]; radix_tree_tag_clear(&fs_info->fs_roots_radix, (unsigned long)root->root_key.objectid, BTRFS_ROOT_TRANS_TAG); @@ -1343,7 +1342,7 @@ static int qgroup_account_snapshot(struct btrfs_trans_handle *trans, */ mutex_lock(&fs_info->tree_log_mutex); - ret = commit_fs_roots(trans, src); + ret = commit_fs_roots(trans, fs_info); if (ret) goto out; ret = btrfs_qgroup_prepare_account_extents(trans, fs_info); @@ -2132,7 +2131,7 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans, */ mutex_lock(&root->fs_info->tree_log_mutex); - ret = commit_fs_roots(trans, root); + ret = commit_fs_roots(trans, root->fs_info); if (ret) { mutex_unlock(&root->fs_info->tree_log_mutex); mutex_unlock(&root->fs_info->reloc_mutex); diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c index e0478f51cf16..72bd398f6c66 100644 --- a/fs/btrfs/tree-log.c +++ b/fs/btrfs/tree-log.c @@ -797,9 +797,9 @@ static noinline int replay_one_extent(struct btrfs_trans_handle *trans, list); if (!ret) ret = btrfs_del_csums(trans, - root->fs_info->csum_root, - sums->bytenr, - sums->len); + root->fs_info, + sums->bytenr, + sums->len); if (!ret) ret = btrfs_csum_file_blocks(trans, root->fs_info->csum_root, diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 1886b94f13ac..17ab4b6b1fd9 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -1667,9 +1667,10 @@ 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 +1678,6 @@ 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; @@ -1737,16 +1736,15 @@ 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; @@ -1909,7 +1907,7 @@ 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(root->fs_info, device); if (ret) goto error_undo; @@ -2241,8 +2239,9 @@ 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 +2256,6 @@ 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; @@ -2452,7 +2450,7 @@ int btrfs_init_new_device(struct btrfs_root *root, char *device_path) } } - ret = btrfs_add_device(trans, root, device); + ret = btrfs_add_device(trans, root->fs_info, device); if (ret) { btrfs_abort_transaction(trans, ret); goto error_trans; @@ -2461,7 +2459,7 @@ 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, root->fs_info); if (ret) { btrfs_abort_transaction(trans, ret); goto error_trans; @@ -2716,14 +2714,14 @@ int btrfs_grow_device(struct btrfs_trans_handle *trans, } 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; @@ -2800,8 +2798,9 @@ static int btrfs_del_sys_chunk(struct btrfs_root *root, u64 chunk_objectid, u64 } 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 btrfs_root *root = fs_info->chunk_root; struct extent_map_tree *em_tree; struct extent_map *em; struct btrfs_root *extent_root = root->fs_info->extent_root; @@ -2811,9 +2810,7 @@ int btrfs_remove_chunk(struct btrfs_trans_handle *trans, int i, ret = 0; struct btrfs_fs_devices *fs_devices = root->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); @@ -2875,7 +2872,8 @@ 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, root->fs_info, chunk_objectid, + chunk_offset); if (ret) { btrfs_abort_transaction(trans, ret); goto out; @@ -2903,15 +2901,13 @@ 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_root *extent_root = fs_info->extent_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 @@ -2949,7 +2945,7 @@ 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); + ret = btrfs_remove_chunk(trans, fs_info, chunk_offset); btrfs_end_transaction(trans, extent_root); return ret; } @@ -3003,7 +2999,7 @@ again: btrfs_release_path(path); if (chunk_type & BTRFS_BLOCK_GROUP_SYSTEM) { - ret = btrfs_relocate_chunk(chunk_root, + ret = btrfs_relocate_chunk(root->fs_info, found_key.offset); if (ret == -ENOSPC) failed++; @@ -3669,8 +3665,7 @@ 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; @@ -4439,7 +4434,7 @@ again: chunk_offset = btrfs_dev_extent_chunk_offset(l, dev_extent); btrfs_release_path(path); - ret = btrfs_relocate_chunk(root, chunk_offset); + ret = btrfs_relocate_chunk(root->fs_info, chunk_offset); mutex_unlock(&root->fs_info->delete_unused_bgs_mutex); if (ret && ret != -ENOSPC) goto done; @@ -6785,8 +6780,9 @@ 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; @@ -6795,8 +6791,6 @@ 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; diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h index 9029a3134922..416574f9dfc2 100644 --- a/fs/btrfs/volumes.h +++ b/fs/btrfs/volumes.h @@ -407,7 +407,7 @@ int btrfs_rmap_block(struct btrfs_fs_info *fs_info, u64 chunk_start, u64 physical, u64 devid, u64 **logical, int *naddrs, int *stripe_len); int btrfs_read_sys_array(struct btrfs_root *root); -int btrfs_read_chunk_tree(struct btrfs_root *root); +int btrfs_read_chunk_tree(struct btrfs_fs_info *fs_info); int btrfs_alloc_chunk(struct btrfs_trans_handle *trans, struct btrfs_root *extent_root, u64 type); void btrfs_mapping_init(struct btrfs_mapping_tree *tree); @@ -483,7 +483,7 @@ int btrfs_finish_chunk_alloc(struct btrfs_trans_handle *trans, struct btrfs_root *extent_root, u64 chunk_offset, u64 chunk_size); 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); static inline int btrfs_dev_stats_dirty(struct btrfs_device *dev) {