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-rw-r--r--fs/btrfs/disk-io.c42
-rw-r--r--fs/btrfs/super.c47
2 files changed, 43 insertions, 46 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index e53a5bb8567..b6a5c0dd0dd 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 dcd5aef6b61..629281c65ff 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);
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-22 11:45:36 +0000