view src/buf.h @ 40:162d92edbb0a

Added tag no-cbc for changeset 87d6dc2cf001
author one
date Sat, 02 Mar 2019 18:37:03 +0900
parents 83c23a36980d
line wrap: on
line source


struct buf {
    int        flags;
    uint       dev;
    uint       sector;
    struct buf *prev;  // LRU cache list
    struct buf *next;
    struct buf *qnext; // disk queue
    uchar      data[512];

#define B_BUSY  0x1  // buffer is locked by some process
#define B_VALID 0x2  // buffer has been read from disk
#define B_DIRTY 0x4  // buffer needs to be written to disk