1 files changed, 2 insertions, 0 deletions

diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index e2600cdb6c25..b01fb6c527e3 100644
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -1010,6 +1010,8 @@ int btrfs_decompress_buf2page(char *buf, unsigned long buf_start,
                 bytes = min(bytes, working_bytes);
                 kaddr = kmap_atomic(page_out);
                 memcpy(kaddr + *pg_offset, buf + buf_offset, bytes);
+                if (*pg_index == (vcnt - 1) && *pg_offset == 0)
+                        memset(kaddr + bytes, 0, PAGE_CACHE_SIZE - bytes);
                 kunmap_atomic(kaddr);
                 flush_dcache_page(page_out);