1 files changed, 9 insertions, 5 deletions

diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c
index c355f7320e44..ee4e04fe60fc 100644
--- a/fs/gfs2/glock.c
+++ b/fs/gfs2/glock.c
@@ -731,14 +731,14 @@ int gfs2_glock_get(struct gfs2_sbd *sdp, u64 number,
                 cachep = gfs2_glock_aspace_cachep;
         else
                 cachep = gfs2_glock_cachep;
-        gl = kmem_cache_alloc(cachep, GFP_KERNEL);
+        gl = kmem_cache_alloc(cachep, GFP_NOFS);
         if (!gl)
                 return -ENOMEM;
 
         memset(&gl->gl_lksb, 0, sizeof(struct dlm_lksb));
 
         if (glops->go_flags & GLOF_LVB) {
-                gl->gl_lksb.sb_lvbptr = kzalloc(GFS2_MIN_LVB_SIZE, GFP_KERNEL);
+                gl->gl_lksb.sb_lvbptr = kzalloc(GFS2_MIN_LVB_SIZE, GFP_NOFS);
                 if (!gl->gl_lksb.sb_lvbptr) {
                         kmem_cache_free(cachep, gl);
                         return -ENOMEM;
@@ -1404,12 +1404,16 @@ __acquires(&lru_lock)
                 gl = list_entry(list->next, struct gfs2_glock, gl_lru);
                 list_del_init(&gl->gl_lru);
                 if (!spin_trylock(&gl->gl_spin)) {
+add_back_to_lru:
                         list_add(&gl->gl_lru, &lru_list);
                         atomic_inc(&lru_count);
                         continue;
                 }
+                if (test_and_set_bit(GLF_LOCK, &gl->gl_flags)) {
+                        spin_unlock(&gl->gl_spin);
+                        goto add_back_to_lru;
+                }
                 clear_bit(GLF_LRU, &gl->gl_flags);
-                spin_unlock(&lru_lock);
                 gl->gl_lockref.count++;
                 if (demote_ok(gl))
                         handle_callback(gl, LM_ST_UNLOCKED, 0, false);
@@ -1417,7 +1421,7 @@ __acquires(&lru_lock)
                 if (queue_delayed_work(glock_workqueue, &gl->gl_work, 0) == 0)
                         gl->gl_lockref.count--;
                 spin_unlock(&gl->gl_spin);
-                spin_lock(&lru_lock);
+                cond_resched_lock(&lru_lock);
         }
 }
 
@@ -1442,7 +1446,7 @@ static long gfs2_scan_glock_lru(int nr)
                 gl = list_entry(lru_list.next, struct gfs2_glock, gl_lru);
 
                 /* Test for being demotable */
-                if (!test_and_set_bit(GLF_LOCK, &gl->gl_flags)) {
+                if (!test_bit(GLF_LOCK, &gl->gl_flags)) {
                         list_move(&gl->gl_lru, &dispose);
                         atomic_dec(&lru_count);
                         freed++;