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Don't cache buffers used when finding the superblock, it can lead to 

seeing bogus data for the first cg with certain block/frag sizes.
From enami tsugutomo.
This commit is contained in:
fvdl 2003-04-12 10:35:58 +00:00
parent 9e0b0abaa7
commit ba400f9233
1 changed files with 7 additions and 7 deletions
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14
sys/ufs/ffs/ffs_vfsops.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: ffs_vfsops.c,v 1.111 2003/04/05 13:37:36 fvdl Exp $ */
/* $NetBSD: ffs_vfsops.c,v 1.112 2003/04/12 10:35:58 fvdl Exp $ */
/*
* Copyright (c) 1989, 1991, 1993, 1994
@ -36,7 +36,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: ffs_vfsops.c,v 1.111 2003/04/05 13:37:36 fvdl Exp $");
__KERNEL_RCSID(0, "$NetBSD: ffs_vfsops.c,v 1.112 2003/04/12 10:35:58 fvdl Exp $");
#if defined(_KERNEL_OPT)
#include "opt_ffs.h"
@ -743,16 +743,16 @@ ffs_mountfs(devvp, mp, p)
fsblockloc = bswap64(fs->fs_sblockloc);
needswap = 1;
#endif
} else {
brelse(bp);
bp = NULL;
continue;
}
} else
goto next_sblock;
if ((fsblockloc == sblockloc ||
(fs->fs_old_flags & FS_FLAGS_UPDATED) == 0)
&& sbsize <= MAXBSIZE && sbsize >= sizeof(struct fs))
break;
next_sblock:
bp->b_flags |= B_NOCACHE;
brelse(bp);
bp = NULL;
}