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Timestamps are bad sources of entropy, so just use cprng_fast32.

This commit is contained in:
joerg 2014-09-08 17:41:11 +00:00
parent 8403248f23
commit 73bd7ce90d
1 changed files with 3 additions and 5 deletions
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8
sys/ufs/chfs/chfs_gc.c
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@ -1,4 +1,4 @@
/* $NetBSD: chfs_gc.c,v 1.6 2014/09/01 16:46:56 he Exp $ */
/* $NetBSD: chfs_gc.c,v 1.7 2014/09/08 17:41:11 joerg Exp $ */
/*-
* Copyright (c) 2010 Department of Software Engineering,
@ -32,6 +32,7 @@
* SUCH DAMAGE.
*/
#include <sys/cprng.h>
#include "chfs.h"
void chfs_gc_release_inode(struct chfs_mount *,
@ -351,10 +352,7 @@ find_gc_block(struct chfs_mount *chmp)
KASSERT(mutex_owned(&chmp->chm_lock_mountfields));
/* Get a random number. */
struct timespec now;
vfs_timestamp(&now);
int n = now.tv_nsec % 128;
uint32_t n = cprng_fast32() % 128;
again:
/* Find an eraseblock queue. */