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/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _BCACHEFS_SUBVOLUME_TYPES_H #define _BCACHEFS_SUBVOLUME_TYPES_H #include "darray.h" typedef DARRAY(u32) snapshot_id_list; #define IS_ANCESTOR_BITMAP 128 struct snapshot_t { u32 parent; u32 skip[3]; u32 depth; u32 children[2]; u32 subvol; /* Nonzero only if a subvolume points to this node: */ u32 tree; u32 equiv; unsigned long is_ancestor[BITS_TO_LONGS(IS_ANCESTOR_BITMAP)]; }; struct snapshot_table { struct rcu_head rcu; size_t nr; #ifndef RUST_BINDGEN DECLARE_FLEX_ARRAY(struct snapshot_t, s); #else struct snapshot_t s[0]; #endif }; typedef struct { /* we can't have padding in this struct: */ u64 subvol; u64 inum; } subvol_inum; #endif /* _BCACHEFS_SUBVOLUME_TYPES_H */