Btrfs: cleanup warnings from gcc 4.6 (nonbugs)

These are all the cases where a variable is set, but not read which are
not bugs as far as I can see, but simply leftovers.

Still needs more review.

Found by gcc 4.6's new warnings

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Chris Mason <chris.mason@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 0 insertions, 2 deletions

diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index 396039b3a8a2..7845d1f7d1d9 100644
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -163,7 +163,6 @@ fail:
  */
 static void end_compressed_bio_read(struct bio *bio, int err)
 {
-        struct extent_io_tree *tree;
         struct compressed_bio *cb = bio->bi_private;
         struct inode *inode;
         struct page *page;
@@ -187,7 +186,6 @@ static void end_compressed_bio_read(struct bio *bio, int err)
         /* ok, we're the last bio for this extent, lets start
          * the decompression.
          */
-        tree = &BTRFS_I(inode)->io_tree;
         ret = btrfs_zlib_decompress_biovec(cb->compressed_pages,
                                         cb->start,
                                         cb->orig_bio->bi_io_vec,