[PATCH 4/6] btrfs: remove unused variable tree in bio_readpage_error()

[Johannes Thumshirn]

Commit 2922040236f9 (btrfs: Remove extent_io_ops::writepage_end_io_hook)
removed the indirection to extent_io_ops::writepage_end_io_hook but didn't
remove the tree variable which then became unused.

Remove 'tree' as well to silence the warning when -Wunused-but-set-variable is
used to compile btrfs.

Signed-off-by: Johannes Thumshirn <jthumsh...@suse.de>
---
 fs/btrfs/extent_io.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 0f8f9c035812..17a15cc6b542 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -2403,11 +2403,8 @@ static int bio_readpage_error(struct bio *failed_bio, 
u64 phy_offset,
 void end_extent_writepage(struct page *page, int err, u64 start, u64 end)
 {
        int uptodate = (err == 0);
-       struct extent_io_tree *tree;
        int ret = 0;
 
-       tree = &BTRFS_I(page->mapping->host)->io_tree;
-
        btrfs_writepage_endio_finish_ordered(page, start, end, NULL, uptodate);
 
        if (!uptodate) {
-- 
2.16.4