22 lines
773 B
C
22 lines
773 B
C
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struct cached_page {
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/* - The (dev, dev_offset) pair are unique;
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* the (ino, ino_offset) pair is information and
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* might be missing. duplicate do not make sense
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* although it won't bother VM much.
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* - dev must always be valid, i.e. not NO_DEV
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* - ino may be unknown, i.e. VMC_NO_INODE
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*/
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dev_t dev; /* which dev is it on */
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u64_t dev_offset; /* offset within dev */
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ino_t ino; /* which ino is it about */
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u64_t ino_offset; /* offset within ino */
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struct phys_block *page; /* page ptr */
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struct cached_page *older; /* older in lru chain */
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struct cached_page *newer; /* newer in lru chain */
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struct cached_page *hash_next_dev; /* next in hash chain (bydev) */
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struct cached_page *hash_next_ino; /* next in hash chain (byino) */
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};
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