diff options
Diffstat (limited to 'fs/btrfs/inode.c')
-rw-r--r-- | fs/btrfs/inode.c | 76 |
1 files changed, 6 insertions, 70 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 61bd8953a68..b2251e27ac8 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -79,12 +79,15 @@ static unsigned char btrfs_type_by_mode[S_IFMT >> S_SHIFT] = { int btrfs_check_free_space(struct btrfs_root *root, u64 num_required, int for_del) { - u64 total = btrfs_super_total_bytes(&root->fs_info->super_copy); - u64 used = btrfs_super_bytes_used(&root->fs_info->super_copy); + u64 total; + u64 used; u64 thresh; unsigned long flags; int ret = 0; + spin_lock_irqsave(&root->fs_info->delalloc_lock, flags); + total = btrfs_super_total_bytes(&root->fs_info->super_copy); + used = btrfs_super_bytes_used(&root->fs_info->super_copy); if (for_del) thresh = total * 90; else @@ -92,7 +95,6 @@ int btrfs_check_free_space(struct btrfs_root *root, u64 num_required, do_div(thresh, 100); - spin_lock_irqsave(&root->fs_info->delalloc_lock, flags); if (used + root->fs_info->delalloc_bytes + num_required > thresh) ret = -ENOSPC; spin_unlock_irqrestore(&root->fs_info->delalloc_lock, flags); @@ -115,7 +117,6 @@ static int cow_file_range(struct inode *inode, u64 start, u64 end) trans = btrfs_start_transaction(root, 1); BUG_ON(!trans); btrfs_set_trans_block_group(trans, inode); - mutex_unlock(&root->fs_info->fs_mutex); num_bytes = (end - start + blocksize) & ~(blocksize - 1); num_bytes = max(blocksize, num_bytes); @@ -160,7 +161,6 @@ static int cow_file_range(struct inode *inode, u64 start, u64 end) btrfs_add_ordered_inode(inode); btrfs_update_inode(trans, root, inode); out: - mutex_lock(&root->fs_info->fs_mutex); btrfs_end_transaction(trans, root); return ret; } @@ -269,14 +269,13 @@ static int run_delalloc_range(struct inode *inode, u64 start, u64 end) { struct btrfs_root *root = BTRFS_I(inode)->root; int ret; - mutex_lock(&root->fs_info->fs_mutex); + if (btrfs_test_opt(root, NODATACOW) || btrfs_test_flag(inode, NODATACOW)) ret = run_delalloc_nocow(inode, start, end); else ret = cow_file_range(inode, start, end); - mutex_unlock(&root->fs_info->fs_mutex); return ret; } @@ -349,17 +348,13 @@ int __btrfs_submit_bio_hook(struct inode *inode, int rw, struct bio *bio, ret = btrfs_csum_one_bio(root, bio, &sums); BUG_ON(ret); - mutex_lock(&root->fs_info->fs_mutex); trans = btrfs_start_transaction(root, 1); - mutex_unlock(&root->fs_info->fs_mutex); btrfs_set_trans_block_group(trans, inode); btrfs_csum_file_blocks(trans, root, inode, bio, sums); - mutex_lock(&root->fs_info->fs_mutex); ret = btrfs_end_transaction(trans, root); BUG_ON(ret); - mutex_unlock(&root->fs_info->fs_mutex); kfree(sums); @@ -404,7 +399,6 @@ int btrfs_readpage_io_hook(struct page *page, u64 start, u64 end) btrfs_test_flag(inode, NODATASUM)) return 0; - mutex_lock(&root->fs_info->fs_mutex); path = btrfs_alloc_path(); item = btrfs_lookup_csum(NULL, root, path, inode->i_ino, start, 0); if (IS_ERR(item)) { @@ -422,7 +416,6 @@ int btrfs_readpage_io_hook(struct page *page, u64 start, u64 end) out: if (path) btrfs_free_path(path); - mutex_unlock(&root->fs_info->fs_mutex); return ret; } @@ -616,7 +609,6 @@ void btrfs_read_locked_inode(struct inode *inode) path = btrfs_alloc_path(); BUG_ON(!path); - mutex_lock(&root->fs_info->fs_mutex); memcpy(&location, &BTRFS_I(inode)->location, sizeof(location)); ret = btrfs_lookup_inode(NULL, root, path, &location, 0); @@ -662,8 +654,6 @@ void btrfs_read_locked_inode(struct inode *inode) btrfs_free_path(path); inode_item = NULL; - mutex_unlock(&root->fs_info->fs_mutex); - switch (inode->i_mode & S_IFMT) { case S_IFREG: inode->i_mapping->a_ops = &btrfs_aops; @@ -691,9 +681,7 @@ void btrfs_read_locked_inode(struct inode *inode) return; make_bad: - btrfs_release_path(root, path); btrfs_free_path(path); - mutex_unlock(&root->fs_info->fs_mutex); make_bad_inode(inode); } @@ -758,7 +746,6 @@ int btrfs_update_inode(struct btrfs_trans_handle *trans, btrfs_set_inode_last_trans(trans, inode); ret = 0; failed: - btrfs_release_path(root, path); btrfs_free_path(path); return ret; } @@ -849,7 +836,6 @@ static int btrfs_unlink(struct inode *dir, struct dentry *dentry) unsigned long nr = 0; root = BTRFS_I(dir)->root; - mutex_lock(&root->fs_info->fs_mutex); ret = btrfs_check_free_space(root, 1, 1); if (ret) @@ -871,7 +857,6 @@ static int btrfs_unlink(struct inode *dir, struct dentry *dentry) btrfs_end_transaction(trans, root); fail: - mutex_unlock(&root->fs_info->fs_mutex); btrfs_btree_balance_dirty(root, nr); btrfs_throttle(root); return ret; @@ -890,7 +875,6 @@ static int btrfs_rmdir(struct inode *dir, struct dentry *dentry) return -ENOTEMPTY; } - mutex_lock(&root->fs_info->fs_mutex); ret = btrfs_check_free_space(root, 1, 1); if (ret) goto fail; @@ -907,7 +891,6 @@ static int btrfs_rmdir(struct inode *dir, struct dentry *dentry) nr = trans->blocks_used; ret = btrfs_end_transaction(trans, root); fail: - mutex_unlock(&root->fs_info->fs_mutex); btrfs_btree_balance_dirty(root, nr); btrfs_throttle(root); @@ -1129,7 +1112,6 @@ error: ret = btrfs_del_items(trans, root, path, pending_del_slot, pending_del_nr); } - btrfs_release_path(root, path); btrfs_free_path(path); inode->i_sb->s_dirt = 1; return ret; @@ -1234,9 +1216,7 @@ static int btrfs_setattr(struct dentry *dentry, struct iattr *attr) if (attr->ia_size <= hole_start) goto out; - mutex_lock(&root->fs_info->fs_mutex); err = btrfs_check_free_space(root, 1, 0); - mutex_unlock(&root->fs_info->fs_mutex); if (err) goto fail; @@ -1245,7 +1225,6 @@ static int btrfs_setattr(struct dentry *dentry, struct iattr *attr) lock_extent(io_tree, hole_start, block_end - 1, GFP_NOFS); hole_size = block_end - hole_start; - mutex_lock(&root->fs_info->fs_mutex); trans = btrfs_start_transaction(root, 1); btrfs_set_trans_block_group(trans, inode); err = btrfs_drop_extents(trans, root, inode, @@ -1262,7 +1241,6 @@ static int btrfs_setattr(struct dentry *dentry, struct iattr *attr) btrfs_check_file(root, inode); } btrfs_end_transaction(trans, root); - mutex_unlock(&root->fs_info->fs_mutex); unlock_extent(io_tree, hole_start, block_end - 1, GFP_NOFS); if (err) return err; @@ -1286,7 +1264,6 @@ void btrfs_delete_inode(struct inode *inode) } inode->i_size = 0; - mutex_lock(&root->fs_info->fs_mutex); trans = btrfs_start_transaction(root, 1); btrfs_set_trans_block_group(trans, inode); @@ -1298,7 +1275,6 @@ void btrfs_delete_inode(struct inode *inode) clear_inode(inode); btrfs_end_transaction(trans, root); - mutex_unlock(&root->fs_info->fs_mutex); btrfs_btree_balance_dirty(root, nr); btrfs_throttle(root); return; @@ -1306,7 +1282,6 @@ void btrfs_delete_inode(struct inode *inode) no_delete_lock: nr = trans->blocks_used; btrfs_end_transaction(trans, root); - mutex_unlock(&root->fs_info->fs_mutex); btrfs_btree_balance_dirty(root, nr); btrfs_throttle(root); no_delete: @@ -1402,7 +1377,6 @@ static int fixup_tree_root_location(struct btrfs_root *root, path = btrfs_alloc_path(); BUG_ON(!path); - mutex_lock(&root->fs_info->fs_mutex); *sub_root = btrfs_read_fs_root(root->fs_info, location, dentry->d_name.name, @@ -1416,7 +1390,6 @@ static int fixup_tree_root_location(struct btrfs_root *root, location->offset = 0; btrfs_free_path(path); - mutex_unlock(&root->fs_info->fs_mutex); return 0; } @@ -1482,9 +1455,7 @@ static struct dentry *btrfs_lookup(struct inode *dir, struct dentry *dentry, if (dentry->d_name.len > BTRFS_NAME_LEN) return ERR_PTR(-ENAMETOOLONG); - mutex_lock(&root->fs_info->fs_mutex); ret = btrfs_inode_by_name(dir, dentry, &location); - mutex_unlock(&root->fs_info->fs_mutex); if (ret < 0) return ERR_PTR(ret); @@ -1559,7 +1530,6 @@ static int btrfs_readdir(struct file *filp, void *dirent, filldir_t filldir) filp->f_pos = 1; } - mutex_lock(&root->fs_info->fs_mutex); key.objectid = inode->i_ino; path = btrfs_alloc_path(); path->reada = 2; @@ -1668,9 +1638,7 @@ read_dir_items: nopos: ret = 0; err: - btrfs_release_path(root, path); btrfs_free_path(path); - mutex_unlock(&root->fs_info->fs_mutex); return ret; } @@ -1681,11 +1649,9 @@ int btrfs_write_inode(struct inode *inode, int wait) int ret = 0; if (wait) { - mutex_lock(&root->fs_info->fs_mutex); trans = btrfs_start_transaction(root, 1); btrfs_set_trans_block_group(trans, inode); ret = btrfs_commit_transaction(trans, root); - mutex_unlock(&root->fs_info->fs_mutex); } return ret; } @@ -1701,12 +1667,10 @@ void btrfs_dirty_inode(struct inode *inode) struct btrfs_root *root = BTRFS_I(inode)->root; struct btrfs_trans_handle *trans; - mutex_lock(&root->fs_info->fs_mutex); trans = btrfs_start_transaction(root, 1); btrfs_set_trans_block_group(trans, inode); btrfs_update_inode(trans, root, inode); btrfs_end_transaction(trans, root); - mutex_unlock(&root->fs_info->fs_mutex); } static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans, @@ -1874,7 +1838,6 @@ static int btrfs_mknod(struct inode *dir, struct dentry *dentry, if (!new_valid_dev(rdev)) return -EINVAL; - mutex_lock(&root->fs_info->fs_mutex); err = btrfs_check_free_space(root, 1, 0); if (err) goto fail; @@ -1912,8 +1875,6 @@ out_unlock: nr = trans->blocks_used; btrfs_end_transaction(trans, root); fail: - mutex_unlock(&root->fs_info->fs_mutex); - if (drop_inode) { inode_dec_link_count(inode); iput(inode); @@ -1934,7 +1895,6 @@ static int btrfs_create(struct inode *dir, struct dentry *dentry, unsigned long nr = 0; u64 objectid; - mutex_lock(&root->fs_info->fs_mutex); err = btrfs_check_free_space(root, 1, 0); if (err) goto fail; @@ -1980,8 +1940,6 @@ out_unlock: nr = trans->blocks_used; btrfs_end_transaction(trans, root); fail: - mutex_unlock(&root->fs_info->fs_mutex); - if (drop_inode) { inode_dec_link_count(inode); iput(inode); @@ -2009,7 +1967,6 @@ static int btrfs_link(struct dentry *old_dentry, struct inode *dir, #else inc_nlink(inode); #endif - mutex_lock(&root->fs_info->fs_mutex); err = btrfs_check_free_space(root, 1, 0); if (err) goto fail; @@ -2032,8 +1989,6 @@ static int btrfs_link(struct dentry *old_dentry, struct inode *dir, nr = trans->blocks_used; btrfs_end_transaction(trans, root); fail: - mutex_unlock(&root->fs_info->fs_mutex); - if (drop_inode) { inode_dec_link_count(inode); iput(inode); @@ -2053,7 +2008,6 @@ static int btrfs_mkdir(struct inode *dir, struct dentry *dentry, int mode) u64 objectid = 0; unsigned long nr = 1; - mutex_lock(&root->fs_info->fs_mutex); err = btrfs_check_free_space(root, 1, 0); if (err) goto out_unlock; @@ -2106,7 +2060,6 @@ out_fail: btrfs_end_transaction(trans, root); out_unlock: - mutex_unlock(&root->fs_info->fs_mutex); if (drop_on_err) iput(inode); btrfs_btree_balance_dirty(root, nr); @@ -2199,7 +2152,6 @@ struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page, path = btrfs_alloc_path(); BUG_ON(!path); - mutex_lock(&root->fs_info->fs_mutex); again: spin_lock(&em_tree->lock); @@ -2402,7 +2354,6 @@ out: if (!err) err = ret; } - mutex_unlock(&root->fs_info->fs_mutex); if (err) { free_extent_map(em); WARN_ON(1); @@ -2584,9 +2535,7 @@ int btrfs_page_mkwrite(struct vm_area_struct *vma, struct page *page) int ret; u64 page_start; - mutex_lock(&root->fs_info->fs_mutex); ret = btrfs_check_free_space(root, PAGE_CACHE_SIZE, 0); - mutex_unlock(&root->fs_info->fs_mutex); if (ret) goto out; @@ -2631,7 +2580,6 @@ static void btrfs_truncate(struct inode *inode) btrfs_truncate_page(inode->i_mapping, inode->i_size); - mutex_lock(&root->fs_info->fs_mutex); trans = btrfs_start_transaction(root, 1); btrfs_set_trans_block_group(trans, inode); @@ -2643,7 +2591,6 @@ static void btrfs_truncate(struct inode *inode) ret = btrfs_end_transaction(trans, root); BUG_ON(ret); - mutex_unlock(&root->fs_info->fs_mutex); btrfs_btree_balance_dirty(root, nr); btrfs_throttle(root); } @@ -2827,7 +2774,6 @@ static int btrfs_rename(struct inode * old_dir, struct dentry *old_dentry, struct inode *new_inode = new_dentry->d_inode; struct inode *old_inode = old_dentry->d_inode; struct timespec ctime = CURRENT_TIME; - struct btrfs_path *path; int ret; if (S_ISDIR(old_inode->i_mode) && new_inode && @@ -2835,7 +2781,6 @@ static int btrfs_rename(struct inode * old_dir, struct dentry *old_dentry, return -ENOTEMPTY; } - mutex_lock(&root->fs_info->fs_mutex); ret = btrfs_check_free_space(root, 1, 0); if (ret) goto out_unlock; @@ -2843,11 +2788,6 @@ static int btrfs_rename(struct inode * old_dir, struct dentry *old_dentry, trans = btrfs_start_transaction(root, 1); btrfs_set_trans_block_group(trans, new_dir); - path = btrfs_alloc_path(); - if (!path) { - ret = -ENOMEM; - goto out_fail; - } old_dentry->d_inode->i_nlink++; old_dir->i_ctime = old_dir->i_mtime = ctime; @@ -2869,10 +2809,8 @@ static int btrfs_rename(struct inode * old_dir, struct dentry *old_dentry, goto out_fail; out_fail: - btrfs_free_path(path); btrfs_end_transaction(trans, root); out_unlock: - mutex_unlock(&root->fs_info->fs_mutex); return ret; } @@ -2898,7 +2836,6 @@ static int btrfs_symlink(struct inode *dir, struct dentry *dentry, if (name_len > BTRFS_MAX_INLINE_DATA_SIZE(root)) return -ENAMETOOLONG; - mutex_lock(&root->fs_info->fs_mutex); err = btrfs_check_free_space(root, 1, 0); if (err) goto out_fail; @@ -2979,7 +2916,6 @@ out_unlock: nr = trans->blocks_used; btrfs_end_transaction(trans, root); out_fail: - mutex_unlock(&root->fs_info->fs_mutex); if (drop_inode) { inode_dec_link_count(inode); iput(inode); |