[Ocfs2-devel] [PATCH v2 3/5] ocfs2: ocfs2_initialize_super does cleanup job before return error

[Joseph Qi]

On 4/13/22 4:29 PM, Heming Zhao wrote:
> After this patch, when error, ocfs2_fill_super doesn't take care to
> release resources which are allocated in ocfs2_initialize_super.
> 
> Signed-off-by: Heming Zhao <heming.zhao at suse.com>

Reviewed-by: Joseph Qi <joseph.qi at linux.alibaba.com>
> ---
>  fs/ocfs2/super.c | 59 +++++++++++++++++++++++++++++++++---------------
>  1 file changed, 41 insertions(+), 18 deletions(-)
> 
> diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
> index 7076125f5b46..4302c3e9598c 100644
> --- a/fs/ocfs2/super.c
> +++ b/fs/ocfs2/super.c
> @@ -2023,7 +2023,7 @@ static int ocfs2_initialize_super(struct super_block *sb,
>  	if (!osb) {
>  		status = -ENOMEM;
>  		mlog_errno(status);
> -		goto bail;
> +		goto out;
>  	}
>  
>  	sb->s_fs_info = osb;
> @@ -2084,7 +2084,7 @@ static int ocfs2_initialize_super(struct super_block *sb,
>  		mlog(ML_ERROR, "Invalid number of node slots (%u)\n",
>  		     osb->max_slots);
>  		status = -EINVAL;
> -		goto bail;
> +		goto out;
>  	}
>  
>  	ocfs2_orphan_scan_init(osb);
> @@ -2093,7 +2093,7 @@ static int ocfs2_initialize_super(struct super_block *sb,
>  	if (status) {
>  		mlog(ML_ERROR, "Unable to initialize recovery state\n");
>  		mlog_errno(status);
> -		goto bail;
> +		goto out;
>  	}
>  
>  	init_waitqueue_head(&osb->checkpoint_event);
> @@ -2117,7 +2117,7 @@ static int ocfs2_initialize_super(struct super_block *sb,
>  	if (!osb->vol_label) {
>  		mlog(ML_ERROR, "unable to alloc vol label\n");
>  		status = -ENOMEM;
> -		goto bail;
> +		goto out_recovery_map;
>  	}
>  
>  	osb->slot_recovery_generations =
> @@ -2126,7 +2126,7 @@ static int ocfs2_initialize_super(struct super_block *sb,
>  	if (!osb->slot_recovery_generations) {
>  		status = -ENOMEM;
>  		mlog_errno(status);
> -		goto bail;
> +		goto out_vol_label;
>  	}
>  
>  	init_waitqueue_head(&osb->osb_wipe_event);
> @@ -2136,7 +2136,7 @@ static int ocfs2_initialize_super(struct super_block *sb,
>  	if (!osb->osb_orphan_wipes) {
>  		status = -ENOMEM;
>  		mlog_errno(status);
> -		goto bail;
> +		goto out_slot_recovery_gen;
>  	}
>  
>  	osb->osb_rf_lock_tree = RB_ROOT;
> @@ -2152,13 +2152,13 @@ static int ocfs2_initialize_super(struct super_block *sb,
>  		mlog(ML_ERROR, "couldn't mount because of unsupported "
>  		     "optional features (%x).\n", i);
>  		status = -EINVAL;
> -		goto bail;
> +		goto out_orphan_wipes;
>  	}
>  	if (!sb_rdonly(osb->sb) && (i = OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP))) {
>  		mlog(ML_ERROR, "couldn't mount RDWR because of "
>  		     "unsupported optional features (%x).\n", i);
>  		status = -EINVAL;
> -		goto bail;
> +		goto out_orphan_wipes;
>  	}
>  
>  	if (ocfs2_clusterinfo_valid(osb)) {
> @@ -2179,7 +2179,7 @@ static int ocfs2_initialize_super(struct super_block *sb,
>  			     "cluster stack label (%s) \n",
>  			     osb->osb_cluster_stack);
>  			status = -EINVAL;
> -			goto bail;
> +			goto out_orphan_wipes;
>  		}
>  		memcpy(osb->osb_cluster_name,
>  			OCFS2_RAW_SB(di)->s_cluster_info.ci_cluster,
> @@ -2199,7 +2199,7 @@ static int ocfs2_initialize_super(struct super_block *sb,
>  	 */
>  	status = ocfs2_journal_alloc(osb);
>  	if (status)
> -		goto bail;
> +		goto out_orphan_wipes;
>  
>  	INIT_WORK(&osb->dquot_drop_work, ocfs2_drop_dquot_refs);
>  	init_llist_head(&osb->dquot_drop_list);
> @@ -2214,7 +2214,7 @@ static int ocfs2_initialize_super(struct super_block *sb,
>  		mlog(ML_ERROR, "Volume has invalid cluster size (%d)\n",
>  		     osb->s_clustersize);
>  		status = -EINVAL;
> -		goto bail;
> +		goto out_journal;
>  	}
>  
>  	total_blocks = ocfs2_clusters_to_blocks(osb->sb,
> @@ -2226,14 +2226,14 @@ static int ocfs2_initialize_super(struct super_block *sb,
>  		mlog(ML_ERROR, "Volume too large "
>  		     "to mount safely on this system");
>  		status = -EFBIG;
> -		goto bail;
> +		goto out_journal;
>  	}
>  
>  	if (ocfs2_setup_osb_uuid(osb, di->id2.i_super.s_uuid,
>  				 sizeof(di->id2.i_super.s_uuid))) {
>  		mlog(ML_ERROR, "Out of memory trying to setup our uuid.\n");
>  		status = -ENOMEM;
> -		goto bail;
> +		goto out_journal;
>  	}
>  
>  	strlcpy(osb->vol_label, di->id2.i_super.s_label,
> @@ -2253,7 +2253,7 @@ static int ocfs2_initialize_super(struct super_block *sb,
>  	if (!osb->osb_dlm_debug) {
>  		status = -ENOMEM;
>  		mlog_errno(status);
> -		goto bail;
> +		goto out_uuid_str;
>  	}
>  
>  	atomic_set(&osb->vol_state, VOLUME_INIT);
> @@ -2262,7 +2262,7 @@ static int ocfs2_initialize_super(struct super_block *sb,
>  	status = ocfs2_init_global_system_inodes(osb);
>  	if (status < 0) {
>  		mlog_errno(status);
> -		goto bail;
> +		goto out_dlm_out;
>  	}
>  
>  	/*
> @@ -2273,7 +2273,7 @@ static int ocfs2_initialize_super(struct super_block *sb,
>  	if (!inode) {
>  		status = -EINVAL;
>  		mlog_errno(status);
> -		goto bail;
> +		goto out_system_inodes;
>  	}
>  
>  	osb->bitmap_blkno = OCFS2_I(inode)->ip_blkno;
> @@ -2286,16 +2286,39 @@ static int ocfs2_initialize_super(struct super_block *sb,
>  	status = ocfs2_init_slot_info(osb);
>  	if (status < 0) {
>  		mlog_errno(status);
> -		goto bail;
> +		goto out_system_inodes;
>  	}
>  
>  	osb->ocfs2_wq = alloc_ordered_workqueue("ocfs2_wq", WQ_MEM_RECLAIM);
>  	if (!osb->ocfs2_wq) {
>  		status = -ENOMEM;
>  		mlog_errno(status);
> +		goto out_slot_info;
>  	}
>  
> -bail:
> +	return status;
> +
> +out_slot_info:
> +	ocfs2_free_slot_info(osb);
> +out_system_inodes:
> +	ocfs2_release_system_inodes(osb);
> +out_dlm_out:
> +	ocfs2_put_dlm_debug(osb->osb_dlm_debug);
> +out_uuid_str:
> +	kfree(osb->uuid_str);
> +out_journal:
> +	kfree(osb->journal);
> +out_orphan_wipes:
> +	kfree(osb->osb_orphan_wipes);
> +out_slot_recovery_gen:
> +	kfree(osb->slot_recovery_generations);
> +out_vol_label:
> +	kfree(osb->vol_label);
> +out_recovery_map:
> +	kfree(osb->recovery_map);
> +out:
> +	kfree(osb);
> +	sb->s_fs_info = NULL;
>  	return status;
>  }
>