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author | Chris Mason <chris.mason@oracle.com> | 2011-11-11 01:42:53 (GMT) |
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committer | Chris Mason <chris.mason@oracle.com> | 2011-11-11 01:42:53 (GMT) |
commit | f7d572188b7b2a6d07081688f8602dc407186e64 (patch) | |
tree | d6a386fbe7c44afcb05847e1f9d1405583b0fff9 /fs | |
parent | 2115133f8b9a8dbdb217d14080814df07ce90479 (diff) | |
parent | 04d21a244fdf79d0ac892eaaa9a46b682467277c (diff) | |
download | linux-f7d572188b7b2a6d07081688f8602dc407186e64.tar.xz |
Merge branch 'mount-fixes' of git://github.com/idryomov/btrfs-unstable into integration
Diffstat (limited to 'fs')
-rw-r--r-- | fs/btrfs/disk-io.c | 42 | ||||
-rw-r--r-- | fs/btrfs/super.c | 47 |
2 files changed, 43 insertions, 46 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index e53a5bb..b6a5c0d 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -1890,31 +1890,32 @@ struct btrfs_root *open_ctree(struct super_block *sb, u64 features; struct btrfs_key location; struct buffer_head *bh; - struct btrfs_root *extent_root = kzalloc(sizeof(struct btrfs_root), - GFP_NOFS); - struct btrfs_root *csum_root = kzalloc(sizeof(struct btrfs_root), - GFP_NOFS); + struct btrfs_super_block *disk_super; struct btrfs_root *tree_root = btrfs_sb(sb); - struct btrfs_fs_info *fs_info = NULL; - struct btrfs_root *chunk_root = kzalloc(sizeof(struct btrfs_root), - GFP_NOFS); - struct btrfs_root *dev_root = kzalloc(sizeof(struct btrfs_root), - GFP_NOFS); + struct btrfs_fs_info *fs_info = tree_root->fs_info; + struct btrfs_root *extent_root; + struct btrfs_root *csum_root; + struct btrfs_root *chunk_root; + struct btrfs_root *dev_root; struct btrfs_root *log_tree_root; - int ret; int err = -EINVAL; int num_backups_tried = 0; int backup_index = 0; - struct btrfs_super_block *disk_super; + extent_root = fs_info->extent_root = + kzalloc(sizeof(struct btrfs_root), GFP_NOFS); + csum_root = fs_info->csum_root = + kzalloc(sizeof(struct btrfs_root), GFP_NOFS); + chunk_root = fs_info->chunk_root = + kzalloc(sizeof(struct btrfs_root), GFP_NOFS); + dev_root = fs_info->dev_root = + kzalloc(sizeof(struct btrfs_root), GFP_NOFS); - if (!extent_root || !tree_root || !tree_root->fs_info || - !chunk_root || !dev_root || !csum_root) { + if (!extent_root || !csum_root || !chunk_root || !dev_root) { err = -ENOMEM; goto fail; } - fs_info = tree_root->fs_info; ret = init_srcu_struct(&fs_info->subvol_srcu); if (ret) { @@ -1954,12 +1955,6 @@ struct btrfs_root *open_ctree(struct super_block *sb, mutex_init(&fs_info->reloc_mutex); init_completion(&fs_info->kobj_unregister); - fs_info->tree_root = tree_root; - fs_info->extent_root = extent_root; - fs_info->csum_root = csum_root; - fs_info->chunk_root = chunk_root; - fs_info->dev_root = dev_root; - fs_info->fs_devices = fs_devices; INIT_LIST_HEAD(&fs_info->dirty_cowonly_roots); INIT_LIST_HEAD(&fs_info->space_info); btrfs_mapping_init(&fs_info->mapping_tree); @@ -2465,21 +2460,20 @@ fail_sb_buffer: btrfs_stop_workers(&fs_info->caching_workers); fail_alloc: fail_iput: + btrfs_mapping_tree_free(&fs_info->mapping_tree); + invalidate_inode_pages2(fs_info->btree_inode->i_mapping); iput(fs_info->btree_inode); - - btrfs_close_devices(fs_info->fs_devices); - btrfs_mapping_tree_free(&fs_info->mapping_tree); fail_bdi: bdi_destroy(&fs_info->bdi); fail_srcu: cleanup_srcu_struct(&fs_info->subvol_srcu); fail: + btrfs_close_devices(fs_info->fs_devices); free_fs_info(fs_info); return ERR_PTR(err); recovery_tree_root: - if (!btrfs_test_opt(tree_root, RECOVERY)) goto fail_tree_roots; diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index dcd5aef..629281c 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -448,6 +448,7 @@ static int btrfs_parse_early_options(const char *options, fmode_t flags, token = match_token(p, tokens, args); switch (token) { case Opt_subvol: + kfree(*subvol_name); *subvol_name = match_strdup(&args[0]); break; case Opt_subvolid: @@ -890,7 +891,6 @@ static struct dentry *btrfs_mount(struct file_system_type *fs_type, int flags, struct super_block *s; struct dentry *root; struct btrfs_fs_devices *fs_devices = NULL; - struct btrfs_root *tree_root = NULL; struct btrfs_fs_info *fs_info = NULL; fmode_t mode = FMODE_READ; char *subvol_name = NULL; @@ -904,8 +904,10 @@ static struct dentry *btrfs_mount(struct file_system_type *fs_type, int flags, error = btrfs_parse_early_options(data, mode, fs_type, &subvol_name, &subvol_objectid, &subvol_rootid, &fs_devices); - if (error) + if (error) { + kfree(subvol_name); return ERR_PTR(error); + } if (subvol_name) { root = mount_subvol(subvol_name, flags, device_name, data); @@ -917,15 +919,6 @@ static struct dentry *btrfs_mount(struct file_system_type *fs_type, int flags, if (error) return ERR_PTR(error); - error = btrfs_open_devices(fs_devices, mode, fs_type); - if (error) - return ERR_PTR(error); - - if (!(flags & MS_RDONLY) && fs_devices->rw_devices == 0) { - error = -EACCES; - goto error_close_devices; - } - /* * Setup a dummy root and fs_info for test/set super. This is because * we don't actually fill this stuff out until open_ctree, but we need @@ -933,28 +926,36 @@ static struct dentry *btrfs_mount(struct file_system_type *fs_type, int flags, * then open_ctree will properly initialize everything later. */ fs_info = kzalloc(sizeof(struct btrfs_fs_info), GFP_NOFS); - if (!fs_info) { - error = -ENOMEM; - goto error_close_devices; - } - tree_root = kzalloc(sizeof(struct btrfs_root), GFP_NOFS); - if (!tree_root) { + if (!fs_info) + return ERR_PTR(-ENOMEM); + + fs_info->tree_root = kzalloc(sizeof(struct btrfs_root), GFP_NOFS); + if (!fs_info->tree_root) { error = -ENOMEM; - goto error_close_devices; + goto error_fs_info; } - fs_info->tree_root = tree_root; + fs_info->tree_root->fs_info = fs_info; fs_info->fs_devices = fs_devices; - tree_root->fs_info = fs_info; fs_info->super_copy = kzalloc(BTRFS_SUPER_INFO_SIZE, GFP_NOFS); fs_info->super_for_commit = kzalloc(BTRFS_SUPER_INFO_SIZE, GFP_NOFS); if (!fs_info->super_copy || !fs_info->super_for_commit) { error = -ENOMEM; + goto error_fs_info; + } + + error = btrfs_open_devices(fs_devices, mode, fs_type); + if (error) + goto error_fs_info; + + if (!(flags & MS_RDONLY) && fs_devices->rw_devices == 0) { + error = -EACCES; goto error_close_devices; } bdev = fs_devices->latest_bdev; - s = sget(fs_type, btrfs_test_super, btrfs_set_super, tree_root); + s = sget(fs_type, btrfs_test_super, btrfs_set_super, + fs_info->tree_root); if (IS_ERR(s)) { error = PTR_ERR(s); goto error_close_devices; @@ -963,7 +964,8 @@ static struct dentry *btrfs_mount(struct file_system_type *fs_type, int flags, if (s->s_root) { if ((flags ^ s->s_flags) & MS_RDONLY) { deactivate_locked_super(s); - return ERR_PTR(-EBUSY); + error = -EBUSY; + goto error_close_devices; } btrfs_close_devices(fs_devices); @@ -994,6 +996,7 @@ static struct dentry *btrfs_mount(struct file_system_type *fs_type, int flags, error_close_devices: btrfs_close_devices(fs_devices); +error_fs_info: free_fs_info(fs_info); return ERR_PTR(error); } |