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authorMole Shang <[email protected]>2024-02-16 10:05:03 +0800
committerMole Shang <[email protected]>2024-02-16 10:05:03 +0800
commit99015f3a985b2fd051606636743a2a2969b216e8 (patch)
treee4b6336f4577ecc47b08165d40f081a810d0bda9 /kernel/buf.h
parent16f51058790ba5779cf46de18e6a266f2fac0a1d (diff)
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lab lock/bcache: finish
Diffstat (limited to 'kernel/buf.h')
-rw-r--r--kernel/buf.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/buf.h b/kernel/buf.h
index 4616e9e..bbef407 100644
--- a/kernel/buf.h
+++ b/kernel/buf.h
@@ -8,5 +8,6 @@ struct buf {
struct buf *prev; // LRU cache list
struct buf *next;
uchar data[BSIZE];
+ uint ticks; // derived from global variable ticks (trap.c), record ticks when last modified
};