blob: cfeb8c61660dff7c408259cadfac3b4f6583adad (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
|
struct buf {
int flags;
uint dev;
uint sector;
struct spinlock lock;
struct sleeplock sleeplock;
struct buf *prev; // LRU cache list
struct buf *next;
struct buf *qnext; // disk queue
uchar data[512];
};
#define B_VALID 0x1 // buffer has been read from disk
#define B_DIRTY 0x2 // buffer needs to be written to disk
|
