diff options
| author | Nikolay Borisov <nborisov@suse.com> | 2018-06-20 18:43:12 +0300 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2018-08-06 13:12:39 +0200 |
| commit | 7b4284de93c51b1d78699bf06bccee892699aa4e (patch) | |
| tree | 06a6eac388d3c188f0c17f4bf4bda39b52a55162 /fs/btrfs/delayed-ref.c | |
| parent | 43794446548730ac8461be30bbe47d5d027d1d16 (diff) | |
btrfs: Streamline memory allocation failure handling in btrfs_add_delayed_tree_ref
Currently the function uses 2 goto labels to properly handle allocation
failures. This could be simplified by simply re-arranging the code so
that allocations are the in the beginning of the function. This allows
to use simple return statements. No functional changes.
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Su Yue <suy.fnst@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/delayed-ref.c')
| -rw-r--r-- | fs/btrfs/delayed-ref.c | 35 |
1 files changed, 17 insertions, 18 deletions
diff --git a/fs/btrfs/delayed-ref.c b/fs/btrfs/delayed-ref.c index 6eb00eb65d76..62ff545ba1f7 100644 --- a/fs/btrfs/delayed-ref.c +++ b/fs/btrfs/delayed-ref.c @@ -730,27 +730,33 @@ int btrfs_add_delayed_tree_ref(struct btrfs_trans_handle *trans, if (!ref) return -ENOMEM; + head_ref = kmem_cache_alloc(btrfs_delayed_ref_head_cachep, GFP_NOFS); + if (!head_ref) { + kmem_cache_free(btrfs_delayed_tree_ref_cachep, ref); + return -ENOMEM; + } + + if (test_bit(BTRFS_FS_QUOTA_ENABLED, &fs_info->flags) && + is_fstree(ref_root)) { + record = kmalloc(sizeof(*record), GFP_NOFS); + if (!record) { + kmem_cache_free(btrfs_delayed_tree_ref_cachep, ref); + kmem_cache_free(btrfs_delayed_ref_head_cachep, head_ref); + return -ENOMEM; + } + } + if (parent) ref_type = BTRFS_SHARED_BLOCK_REF_KEY; else ref_type = BTRFS_TREE_BLOCK_REF_KEY; + init_delayed_ref_common(fs_info, &ref->node, bytenr, num_bytes, ref_root, action, ref_type); ref->root = ref_root; ref->parent = parent; ref->level = level; - head_ref = kmem_cache_alloc(btrfs_delayed_ref_head_cachep, GFP_NOFS); - if (!head_ref) - goto free_ref; - - if (test_bit(BTRFS_FS_QUOTA_ENABLED, &fs_info->flags) && - is_fstree(ref_root)) { - record = kmalloc(sizeof(*record), GFP_NOFS); - if (!record) - goto free_head_ref; - } - init_delayed_ref_head(head_ref, record, bytenr, num_bytes, ref_root, 0, action, false, is_system); head_ref->extent_op = extent_op; @@ -779,13 +785,6 @@ int btrfs_add_delayed_tree_ref(struct btrfs_trans_handle *trans, btrfs_qgroup_trace_extent_post(fs_info, record); return 0; - -free_head_ref: - kmem_cache_free(btrfs_delayed_ref_head_cachep, head_ref); -free_ref: - kmem_cache_free(btrfs_delayed_tree_ref_cachep, ref); - - return -ENOMEM; } /* |