diff options
| -rw-r--r-- | fs/btrfs/extent_io.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index c046addd9917..288ee90a9823 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -3732,6 +3732,17 @@ static noinline_for_stack int write_one_eb(struct extent_buffer *eb, if (btrfs_header_owner(eb) == BTRFS_TREE_LOG_OBJECTID) bio_flags = EXTENT_BIO_TREE_LOG; + /* set btree node beyond nritems with 0 to avoid stale content */ + if (btrfs_header_level(eb) > 0) { + u32 nritems; + unsigned long end; + + nritems = btrfs_header_nritems(eb); + end = btrfs_node_key_ptr_offset(nritems); + + memset_extent_buffer(eb, 0, end, eb->len - end); + } + for (i = 0; i < num_pages; i++) { struct page *p = eb->pages[i]; |