Gcc '-Wunused-but-set-variable' warning: 
fs/reiserfs/prints.c:749:21: warning: variable blkh set but not used

Fix it by using blkh instead of regenerating it by B_BLK_HEAD(bh)

Reported-by: Hulk Robot <[email protected]>
Signed-off-by: yu kuai <[email protected]>
---
 fs/reiserfs/prints.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/fs/reiserfs/prints.c b/fs/reiserfs/prints.c
index 9fed1c0..590d42b 100644
--- a/fs/reiserfs/prints.c
+++ b/fs/reiserfs/prints.c
@@ -749,15 +749,16 @@ static void check_internal_block_head(struct buffer_head 
*bh)
        struct block_head *blkh;
 
        blkh = B_BLK_HEAD(bh);
-       if (!(B_LEVEL(bh) > DISK_LEAF_NODE_LEVEL && B_LEVEL(bh) <= MAX_HEIGHT))
+       if (!(blkh_level(blkh) > DISK_LEAF_NODE_LEVEL &&
+               blkh_level(blkh) <= MAX_HEIGHT))
                reiserfs_panic(NULL, "vs-6025", "invalid level %z", bh);
 
-       if (B_NR_ITEMS(bh) > (bh->b_size - BLKH_SIZE) / IH_SIZE)
+       if (blkh_nr_item(blkh) > (bh->b_size - BLKH_SIZE) / IH_SIZE)
                reiserfs_panic(NULL, "vs-6030", "invalid item number %z", bh);
 
-       if (B_FREE_SPACE(bh) !=
-           bh->b_size - BLKH_SIZE - KEY_SIZE * B_NR_ITEMS(bh) -
-           DC_SIZE * (B_NR_ITEMS(bh) + 1))
+       if (blkh_free_space(p_blkh) !=
+           bh->b_size - BLKH_SIZE - KEY_SIZE * blkh_nr_item(blkh) -
+           DC_SIZE * (blkh_nr_item(blkh) + 1))
                reiserfs_panic(NULL, "vs-6040", "invalid free space %z", bh);
 
 }
-- 
2.7.4

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