1 files changed, 0 insertions, 66 deletions

diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c
index 438146904b58..fb1960b7fdde 100644
--- a/fs/gfs2/glock.c
+++ b/fs/gfs2/glock.c
@@ -971,8 +971,6 @@ static void drop_bh(struct gfs2_glock *gl, unsigned int ret)
         const struct gfs2_glock_operations *glops = gl->gl_ops;
         struct gfs2_holder *gh = gl->gl_req_gh;
 
-        clear_bit(GLF_PREFETCH, &gl->gl_flags);
-
         gfs2_assert_warn(sdp, test_bit(GLF_LOCK, &gl->gl_flags));
         gfs2_assert_warn(sdp, queue_empty(gl, &gl->gl_holders));
         gfs2_assert_warn(sdp, !ret);
@@ -1227,8 +1225,6 @@ restart:
                 }
         }
 
-        clear_bit(GLF_PREFETCH, &gl->gl_flags);
-
         return error;
 }
 
@@ -1320,36 +1316,6 @@ void gfs2_glock_dq(struct gfs2_holder *gh)
         spin_unlock(&gl->gl_spin);
 }
 
-/**
- * gfs2_glock_prefetch - Try to prefetch a glock
- * @gl: the glock
- * @state: the state to prefetch in
- * @flags: flags passed to go_xmote_th()
- *
- */
-
-static void gfs2_glock_prefetch(struct gfs2_glock *gl, unsigned int state,
-                                int flags)
-{
-        const struct gfs2_glock_operations *glops = gl->gl_ops;
-
-        spin_lock(&gl->gl_spin);
-
-        if (test_bit(GLF_LOCK, &gl->gl_flags) || !list_empty(&gl->gl_holders) ||
-            !list_empty(&gl->gl_waiters1) || !list_empty(&gl->gl_waiters2) ||
-            !list_empty(&gl->gl_waiters3) ||
-            relaxed_state_ok(gl->gl_state, state, flags)) {
-                spin_unlock(&gl->gl_spin);
-                return;
-        }
-
-        set_bit(GLF_PREFETCH, &gl->gl_flags);
-        set_bit(GLF_LOCK, &gl->gl_flags);
-        spin_unlock(&gl->gl_spin);
-
-        glops->go_xmote_th(gl, state, flags);
-}
-
 static void greedy_work(struct work_struct *work)
 {
         struct greedy *gr = container_of(work, struct greedy, gr_work.work);
@@ -1618,34 +1584,6 @@ void gfs2_glock_dq_uninit_m(unsigned int num_gh, struct gfs2_holder *ghs)
 }
 
 /**
- * gfs2_glock_prefetch_num - prefetch a glock based on lock number
- * @sdp: the filesystem
- * @number: the lock number
- * @glops: the glock operations for the type of glock
- * @state: the state to acquire the glock in
- * @flags: modifier flags for the aquisition
- *
- * Returns: errno
- */
-
-void gfs2_glock_prefetch_num(struct gfs2_sbd *sdp, u64 number,
-                             const struct gfs2_glock_operations *glops,
-                             unsigned int state, int flags)
-{
-        struct gfs2_glock *gl;
-        int error;
-
-        if (atomic_read(&sdp->sd_reclaim_count) <
-            gfs2_tune_get(sdp, gt_reclaim_limit)) {
-                error = gfs2_glock_get(sdp, number, glops, CREATE, &gl);
-                if (!error) {
-                        gfs2_glock_prefetch(gl, state, flags);
-                        gfs2_glock_put(gl);
-                }
-        }
-}
-
-/**
  * gfs2_lvb_hold - attach a LVB from a glock
  * @gl: The glock in question
  *
@@ -1781,15 +1719,11 @@ void gfs2_glock_cb(void *cb_data, unsigned int type, void *data)
 
 static int demote_ok(struct gfs2_glock *gl)
 {
-        struct gfs2_sbd *sdp = gl->gl_sbd;
         const struct gfs2_glock_operations *glops = gl->gl_ops;
         int demote = 1;
 
         if (test_bit(GLF_STICKY, &gl->gl_flags))
                 demote = 0;
-        else if (test_bit(GLF_PREFETCH, &gl->gl_flags))
-                demote = time_after_eq(jiffies, gl->gl_stamp +
-                                    gfs2_tune_get(sdp, gt_prefetch_secs) * HZ);
         else if (glops->go_demote_ok)
                 demote = glops->go_demote_ok(gl);