xfs: fix unused variable warning in xfs_buf_set_ref()

Fix an unused variable warning on non-DEBUG builds introduced by
commit 7561d27e90 ("xfs: buffer lru reference count error injection
tag").

Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>

diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c
index d481dd2..db786bc 100644 (file)
--- a/fs/xfs/xfs_buf.c
+++ b/fs/xfs/xfs_buf.c
@@ -2133,14 +2133,13 @@ xfs_buf_terminate(void)
 
 void xfs_buf_set_ref(struct xfs_buf *bp, int lru_ref)
 {
-       struct xfs_mount        *mp = bp->b_target->bt_mount;
-
        /*
         * Set the lru reference count to 0 based on the error injection tag.
         * This allows userspace to disrupt buffer caching for debug/testing
         * purposes.
         */
-       if (XFS_TEST_ERROR(false, mp, XFS_ERRTAG_BUF_LRU_REF))
+       if (XFS_TEST_ERROR(false, bp->b_target->bt_mount,
+                          XFS_ERRTAG_BUF_LRU_REF))
                lru_ref = 0;
 
        atomic_set(&bp->b_lru_ref, lru_ref);