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Clamp down tigher on the bound around 'numextents'. Add a few comments

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to make it clearer what we're tracking.
This commit is contained in:
rumble 2007-07-04 20:20:30 +00:00
parent 96deb6cebd
commit 0bbb4e920d
1 changed files with 5 additions and 3 deletions
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8
sys/fs/efs/efs_subr.c
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@ -1,4 +1,4 @@
/* $NetBSD: efs_subr.c,v 1.2 2007/07/04 19:24:09 rumble Exp $ */
/* $NetBSD: efs_subr.c,v 1.3 2007/07/04 20:20:30 rumble Exp $ */
/*
* Copyright (c) 2006 Stephen M. Rumble <rumble@ephemeral.org>
@ -17,7 +17,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: efs_subr.c,v 1.2 2007/07/04 19:24:09 rumble Exp $");
__KERNEL_RCSID(0, "$NetBSD: efs_subr.c,v 1.3 2007/07/04 20:20:30 rumble Exp $");
#include <sys/param.h>
#include <sys/kauth.h>
@ -496,10 +496,12 @@ efs_extent_iterator_init(struct efs_extent_iterator *exi, struct efs_inode *eip,
break;
}
/* number of extents prior to this indirect vector of extents */
next += numextents;
/* number of extents within this indirect vector of extents */
numextents = ex.ex_length * EFS_EXTENTS_PER_BB;
numextents = MIN(numextents, eip->ei_numextents);
numextents = MIN(numextents, eip->ei_numextents - next);
}
/*