1433d6423SLionel Sambuc 2433d6423SLionel Sambuc struct cached_page { 3433d6423SLionel Sambuc /* - The (dev, dev_offset) pair are unique; 4433d6423SLionel Sambuc * the (ino, ino_offset) pair is information and 5433d6423SLionel Sambuc * might be missing. duplicate do not make sense 6433d6423SLionel Sambuc * although it won't bother VM much. 7433d6423SLionel Sambuc * - dev must always be valid, i.e. not NO_DEV 8433d6423SLionel Sambuc * - ino may be unknown, i.e. VMC_NO_INODE 9433d6423SLionel Sambuc */ 10433d6423SLionel Sambuc dev_t dev; /* which dev is it on */ 11433d6423SLionel Sambuc u64_t dev_offset; /* offset within dev */ 12433d6423SLionel Sambuc 13433d6423SLionel Sambuc ino_t ino; /* which ino is it about */ 14433d6423SLionel Sambuc u64_t ino_offset; /* offset within ino */ 15*e321f655SDavid van Moolenbroek int flags; /* currently only VMSF_ONCE or 0 */ 16433d6423SLionel Sambuc struct phys_block *page; /* page ptr */ 17433d6423SLionel Sambuc struct cached_page *older; /* older in lru chain */ 18433d6423SLionel Sambuc struct cached_page *newer; /* newer in lru chain */ 19433d6423SLionel Sambuc struct cached_page *hash_next_dev; /* next in hash chain (bydev) */ 20433d6423SLionel Sambuc struct cached_page *hash_next_ino; /* next in hash chain (byino) */ 21433d6423SLionel Sambuc }; 22433d6423SLionel Sambuc 23