first commit

2025-02-21 08:39:49 +08:00
commit 6aa7311ce6
80 changed files with 12752 additions and 0 deletions
--- a/kernel/buf.h
+++ b/kernel/buf.h
@ -0,0 +1,12 @@
+struct buf {
+  int valid;   // has data been read from disk?
+  int disk;    // does disk "own" buf?
+  uint dev;
+  uint blockno;
+  struct sleeplock lock;
+  uint refcnt;
+  struct buf *prev; // LRU cache list
+  struct buf *next;
+  uchar data[BSIZE];
+};
+