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-rw-r--r--mm/shmem.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/mm/shmem.c b/mm/shmem.c
index 4bb28d218eb..70da7a0981b 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -515,7 +515,12 @@ static void shmem_truncate_range(struct inode *inode, loff_t start, loff_t end)
size = SHMEM_NR_DIRECT;
nr_swaps_freed = shmem_free_swp(ptr+idx, ptr+size);
}
- if (!topdir)
+
+ /*
+ * If there are no indirect blocks or we are punching a hole
+ * below indirect blocks, nothing to be done.
+ */
+ if (!topdir || (punch_hole && (limit <= SHMEM_NR_DIRECT)))
goto done2;
BUG_ON(limit <= SHMEM_NR_DIRECT);