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-rw-r--r--fs/nilfs2/segbuf.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/nilfs2/segbuf.c b/fs/nilfs2/segbuf.c
index 1362ccb64ec7..6e59dc19a732 100644
--- a/fs/nilfs2/segbuf.c
+++ b/fs/nilfs2/segbuf.c
@@ -101,6 +101,12 @@ int nilfs_segbuf_extend_segsum(struct nilfs_segment_buffer *segbuf)
if (unlikely(!bh))
return -ENOMEM;
+ lock_buffer(bh);
+ if (!buffer_uptodate(bh)) {
+ memset(bh->b_data, 0, bh->b_size);
+ set_buffer_uptodate(bh);
+ }
+ unlock_buffer(bh);
nilfs_segbuf_add_segsum_buffer(segbuf, bh);
return 0;
}