Btrfs: fix uninit variable in repair_eb_io_failure

We'd have to be passing bogus extent buffers for this uninit variable to
actually be used, but set it to zero just in case.

Signed-off-by: Chris Mason <chris.mason@oracle.com>

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 0c3ec003f273a1b9c1ec55008f5f86d795a9de86..59ec105444fe25cbf1da0dcc67d1651483e83eb1 100644 (file)
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -1937,7 +1937,7 @@ int repair_eb_io_failure(struct btrfs_root *root, struct extent_buffer *eb,
        struct btrfs_mapping_tree *map_tree = &root->fs_info->mapping_tree;
        u64 start = eb->start;
        unsigned long i, num_pages = num_extent_pages(eb->start, eb->len);
-       int ret;
+       int ret = 0;
 
        for (i = 0; i < num_pages; i++) {
                struct page *p = extent_buffer_page(eb, i);