shithub: gefs

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snap: flush should also set hd/tl.

--- a/snap.c

+++ b/snap.c

@@ -18,6 +18,9 @@

 	traceb("dlflush", dl->ins->bp);

 	enqueue(dl->ins);

 	dropblk(dl->ins);

+	dl->hd = dl->ins->bp;

+	if(dl->tl.addr == dl->hd.addr)

+		dl->tl = dl->hd;

 	dl->ins = nil;

 	/* special case: the snap dlist has gen -1, skip it */

 	if(dl->gen != -1){