12 lines
245 B
C
12 lines
245 B
C
struct buf {
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int valid; // has data been read from disk?
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int disk; // does disk "own" buf?
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u32 dev;
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u32 blockno;
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struct sleeplock lock;
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u32 refcnt;
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struct buf *prev; // LRU cache list
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struct buf *next;
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u8 data[BSIZE];
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};
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