17 lines
313 B
C
17 lines
313 B
C
#include "types.h"
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#include "param.h"
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#include "sleeplock.h"
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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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uint dev;
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uint blockno;
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struct sleeplock lock;
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uint refcnt;
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struct buf *prev; // LRU cache list
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struct buf *next;
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uchar data[BSIZE];
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};
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