Timestamps are bad sources of entropy, so just use cprng_fast32.
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@ -1,4 +1,4 @@
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/* $NetBSD: chfs_gc.c,v 1.6 2014/09/01 16:46:56 he Exp $ */
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/* $NetBSD: chfs_gc.c,v 1.7 2014/09/08 17:41:11 joerg Exp $ */
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/*-
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* Copyright (c) 2010 Department of Software Engineering,
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@ -32,6 +32,7 @@
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* SUCH DAMAGE.
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*/
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#include <sys/cprng.h>
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#include "chfs.h"
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void chfs_gc_release_inode(struct chfs_mount *,
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@ -351,10 +352,7 @@ find_gc_block(struct chfs_mount *chmp)
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KASSERT(mutex_owned(&chmp->chm_lock_mountfields));
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/* Get a random number. */
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struct timespec now;
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vfs_timestamp(&now);
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int n = now.tv_nsec % 128;
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uint32_t n = cprng_fast32() % 128;
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again:
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/* Find an eraseblock queue. */
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