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-rw-r--r--sys/ufs/ffs/ffs_snapshot.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/ufs/ffs/ffs_snapshot.c b/sys/ufs/ffs/ffs_snapshot.c
index 79afa44..b183569 100644
--- a/sys/ufs/ffs/ffs_snapshot.c
+++ b/sys/ufs/ffs/ffs_snapshot.c
@@ -2091,7 +2091,7 @@ ffs_copyonwrite(devvp, bp)
int launched_async_io, prev_norunningbuf;
long saved_runningbufspace;
- if ((VTOI(bp->b_vp)->i_flags & SF_SNAPSHOT) != 0)
+ if (devvp != bp->b_vp && (VTOI(bp->b_vp)->i_flags & SF_SNAPSHOT) != 0)
return (0); /* Update on a snapshot file */
if (td->td_pflags & TDP_COWINPROGRESS)
panic("ffs_copyonwrite: recursive call");
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