From 5cbf47b7d15fd079636e1ad76d50c7d4ce8e3f08 Mon Sep 17 00:00:00 2001
From: delphij <delphij@FreeBSD.org>
Date: Sat, 19 Feb 2005 07:31:33 +0000
Subject: When clearing a fragment, it's possible that the length is zero.

Reviewed by:	mckusick
MFC After:	1 week
---
 sys/ufs/ffs/ffs_snapshot.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'sys/ufs')

diff --git a/sys/ufs/ffs/ffs_snapshot.c b/sys/ufs/ffs/ffs_snapshot.c
index 5bf9773..5a63d4c 100644
--- a/sys/ufs/ffs/ffs_snapshot.c
+++ b/sys/ufs/ffs/ffs_snapshot.c
@@ -474,7 +474,7 @@ loop:
 		loc = howmany(xp->i_size, fs->fs_bsize) - 1;
 		if (loc < NDADDR) {
 			len = fragroundup(fs, blkoff(fs, xp->i_size));
-			if (len < fs->fs_bsize) {
+			if (len != 0 && len < fs->fs_bsize) {
 				ffs_blkfree(ump, copy_fs, vp,
 				    DIP(xp, i_db[loc]), len, xp->i_number);
 				blkno = DIP(xp, i_db[loc]);
-- 
cgit v1.1