13 files changed, 130 insertions, 341 deletions

diff --git a/fs/gfs2/Makefile b/fs/gfs2/Makefile
index ec65851ec80a..c1b4ec6a9650 100644
--- a/fs/gfs2/Makefile
+++ b/fs/gfs2/Makefile
@@ -1,5 +1,5 @@
 obj-$(CONFIG_GFS2_FS) += gfs2.o
-gfs2-y := acl.o bmap.o daemon.o dir.o eaops.o eattr.o glock.o \
+gfs2-y := acl.o bmap.o dir.o eaops.o eattr.o glock.o \
         glops.o inode.o log.o lops.o locking.o main.o meta_io.o \
         mount.o ops_address.o ops_dentry.o ops_export.o ops_file.o \
         ops_fstype.o ops_inode.o ops_super.o quota.o \
diff --git a/fs/gfs2/daemon.c b/fs/gfs2/daemon.c
deleted file mode 100644
index 2662df0d5b93..000000000000
--- a/fs/gfs2/daemon.c
+++ /dev/null
@@ -1,61 +0,0 @@
-/*
- * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
- * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
- *
- * This copyrighted material is made available to anyone wishing to use,
- * modify, copy, or redistribute it subject to the terms and conditions
- * of the GNU General Public License version 2.
- */
-
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/spinlock.h>
-#include <linux/completion.h>
-#include <linux/buffer_head.h>
-#include <linux/kthread.h>
-#include <linux/delay.h>
-#include <linux/gfs2_ondisk.h>
-#include <linux/lm_interface.h>
-#include <linux/freezer.h>
-
-#include "gfs2.h"
-#include "incore.h"
-#include "daemon.h"
-#include "glock.h"
-#include "log.h"
-#include "recovery.h"
-#include "super.h"
-#include "util.h"
-
-/* This uses schedule_timeout() instead of msleep() because it's good for
-   the daemons to wake up more often than the timeout when unmounting so
-   the user's unmount doesn't sit there forever.
-
-   The kthread functions used to start these daemons block and flush signals. */
-
-/**
- * gfs2_glockd - Reclaim unused glock structures
- * @sdp: Pointer to GFS2 superblock
- *
- * One or more of these daemons run, reclaiming glocks on sd_reclaim_list.
- * Number of daemons can be set by user, with num_glockd mount option.
- */
-
-int gfs2_glockd(void *data)
-{
-        struct gfs2_sbd *sdp = data;
-
-        while (!kthread_should_stop()) {
-                while (atomic_read(&sdp->sd_reclaim_count))
-                        gfs2_reclaim_glock(sdp);
-
-                wait_event_interruptible(sdp->sd_reclaim_wq,
-                                         (atomic_read(&sdp->sd_reclaim_count) ||
-                                         kthread_should_stop()));
-                if (freezing(current))
-                        refrigerator();
-        }
-
-        return 0;
-}
-
diff --git a/fs/gfs2/daemon.h b/fs/gfs2/daemon.h
deleted file mode 100644
index 5258954a234f..000000000000
--- a/fs/gfs2/daemon.h
+++ /dev/null
@@ -1,15 +0,0 @@
-/*
- * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
- * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
- *
- * This copyrighted material is made available to anyone wishing to use,
- * modify, copy, or redistribute it subject to the terms and conditions
- * of the GNU General Public License version 2.
- */
-
-#ifndef __DAEMON_DOT_H__
-#define __DAEMON_DOT_H__
-
-int gfs2_glockd(void *data);
-
-#endif /* __DAEMON_DOT_H__ */
diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c
index 4ddf3bd55dda..07ffc8123d74 100644
--- a/fs/gfs2/glock.c
+++ b/fs/gfs2/glock.c
@@ -62,9 +62,10 @@ static void do_xmote(struct gfs2_glock *gl, struct gfs2_holder *gh, unsigned int
 
 static DECLARE_RWSEM(gfs2_umount_flush_sem);
 static struct dentry *gfs2_root;
-static struct task_struct *scand_process;
-static unsigned int scand_secs = 5;
 static struct workqueue_struct *glock_workqueue;
+static LIST_HEAD(lru_list);
+static atomic_t lru_count = ATOMIC_INIT(0);
+static spinlock_t lru_lock = SPIN_LOCK_UNLOCKED;
 
 #define GFS2_GL_HASH_SHIFT      15
 #define GFS2_GL_HASH_SIZE       (1 << GFS2_GL_HASH_SHIFT)
@@ -175,6 +176,22 @@ static void gfs2_glock_hold(struct gfs2_glock *gl)
 }
 
 /**
+ * gfs2_glock_schedule_for_reclaim - Add a glock to the reclaim list
+ * @gl: the glock
+ *
+ */
+
+static void gfs2_glock_schedule_for_reclaim(struct gfs2_glock *gl)
+{
+        spin_lock(&lru_lock);
+        if (list_empty(&gl->gl_lru) && gl->gl_state != LM_ST_UNLOCKED) {
+                list_add_tail(&gl->gl_lru, &lru_list);
+                atomic_inc(&lru_count);
+        }
+        spin_unlock(&lru_lock);
+}
+
+/**
  * gfs2_glock_put() - Decrement reference count on glock
  * @gl: The glock to put
  *
@@ -188,14 +205,23 @@ int gfs2_glock_put(struct gfs2_glock *gl)
         if (atomic_dec_and_test(&gl->gl_ref)) {
                 hlist_del(&gl->gl_list);
                 write_unlock(gl_lock_addr(gl->gl_hash));
+                spin_lock(&lru_lock);
+                if (!list_empty(&gl->gl_lru)) {
+                        list_del_init(&gl->gl_lru);
+                        atomic_dec(&lru_count);
+                }
+                spin_unlock(&lru_lock);
                 GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_UNLOCKED);
-                GLOCK_BUG_ON(gl, !list_empty(&gl->gl_reclaim));
+                GLOCK_BUG_ON(gl, !list_empty(&gl->gl_lru));
                 GLOCK_BUG_ON(gl, !list_empty(&gl->gl_holders));
                 glock_free(gl);
                 rv = 1;
                 goto out;
         }
         write_unlock(gl_lock_addr(gl->gl_hash));
+        /* 1 for being hashed, 1 for having state != LM_ST_UNLOCKED */
+        if (atomic_read(&gl->gl_ref) == 2)
+                gfs2_glock_schedule_for_reclaim(gl);
 out:
         return rv;
 }
@@ -837,7 +863,7 @@ static void wait_on_demote(struct gfs2_glock *gl)
  */
 
 static void handle_callback(struct gfs2_glock *gl, unsigned int state,
-                            int remote, unsigned long delay)
+                            unsigned long delay)
 {
         int bit = delay ? GLF_PENDING_DEMOTE : GLF_DEMOTE;
 
@@ -845,9 +871,6 @@ static void handle_callback(struct gfs2_glock *gl, unsigned int state,
         if (gl->gl_demote_state == LM_ST_EXCLUSIVE) {
                 gl->gl_demote_state = state;
                 gl->gl_demote_time = jiffies;
-                if (remote && gl->gl_ops->go_type == LM_TYPE_IOPEN &&
-                    gl->gl_object)
-                        gfs2_glock_schedule_for_reclaim(gl);
         } else if (gl->gl_demote_state != LM_ST_UNLOCKED &&
                         gl->gl_demote_state != state) {
                 gl->gl_demote_state = LM_ST_UNLOCKED;
@@ -1017,7 +1040,7 @@ void gfs2_glock_dq(struct gfs2_holder *gh)
 
         spin_lock(&gl->gl_spin);
         if (gh->gh_flags & GL_NOCACHE)
-                handle_callback(gl, LM_ST_UNLOCKED, 0, 0);
+                handle_callback(gl, LM_ST_UNLOCKED, 0);
 
         list_del_init(&gh->gh_list);
         if (find_first_holder(gl) == NULL) {
@@ -1288,7 +1311,7 @@ static void blocking_cb(struct gfs2_sbd *sdp, struct lm_lockname *name,
                 delay = gl->gl_ops->go_min_hold_time;
 
         spin_lock(&gl->gl_spin);
-        handle_callback(gl, state, 1, delay);
+        handle_callback(gl, state, delay);
         spin_unlock(&gl->gl_spin);
         if (queue_delayed_work(glock_workqueue, &gl->gl_work, delay) == 0)
                 gfs2_glock_put(gl);
@@ -1357,80 +1380,83 @@ void gfs2_glock_cb(void *cb_data, unsigned int type, void *data)
  * Returns: 1 if it's ok
  */
 
-static int demote_ok(struct gfs2_glock *gl)
+static int demote_ok(const struct gfs2_glock *gl)
 {
         const struct gfs2_glock_operations *glops = gl->gl_ops;
-        int demote = 1;
-
-        if (test_bit(GLF_STICKY, &gl->gl_flags))
-                demote = 0;
-        else if (glops->go_demote_ok)
-                demote = glops->go_demote_ok(gl);
-
-        return demote;
-}
 
-/**
- * gfs2_glock_schedule_for_reclaim - Add a glock to the reclaim list
- * @gl: the glock
- *
- */
-
-void gfs2_glock_schedule_for_reclaim(struct gfs2_glock *gl)
-{
-        struct gfs2_sbd *sdp = gl->gl_sbd;
-
-        spin_lock(&sdp->sd_reclaim_lock);
-        if (list_empty(&gl->gl_reclaim)) {
-                gfs2_glock_hold(gl);
-                list_add(&gl->gl_reclaim, &sdp->sd_reclaim_list);
-                atomic_inc(&sdp->sd_reclaim_count);
-                spin_unlock(&sdp->sd_reclaim_lock);
-                wake_up(&sdp->sd_reclaim_wq);
-        } else
-                spin_unlock(&sdp->sd_reclaim_lock);
+        if (gl->gl_state == LM_ST_UNLOCKED)
+                return 0;
+        if (!list_empty(&gl->gl_holders))
+                return 0;
+        if (glops->go_demote_ok)
+                return glops->go_demote_ok(gl);
+        return 1;
 }
 
-/**
- * gfs2_reclaim_glock - process the next glock on the filesystem's reclaim list
- * @sdp: the filesystem
- *
- * Called from gfs2_glockd() glock reclaim daemon, or when promoting a
- * different glock and we notice that there are a lot of glocks in the
- * reclaim list.
- *
- */
 
-void gfs2_reclaim_glock(struct gfs2_sbd *sdp)
+static int gfs2_shrink_glock_memory(int nr, gfp_t gfp_mask)
 {
         struct gfs2_glock *gl;
-        int done_callback = 0;
+        int may_demote;
+        int nr_skipped = 0;
+        int got_ref = 0;
+        LIST_HEAD(skipped);
 
-        spin_lock(&sdp->sd_reclaim_lock);
-        if (list_empty(&sdp->sd_reclaim_list)) {
-                spin_unlock(&sdp->sd_reclaim_lock);
-                return;
-        }
-        gl = list_entry(sdp->sd_reclaim_list.next,
-                        struct gfs2_glock, gl_reclaim);
-        list_del_init(&gl->gl_reclaim);
-        spin_unlock(&sdp->sd_reclaim_lock);
+        if (nr == 0)
+                goto out;
 
-        atomic_dec(&sdp->sd_reclaim_count);
-        atomic_inc(&sdp->sd_reclaimed);
+        if (!(gfp_mask & __GFP_FS))
+                return -1;
 
-        spin_lock(&gl->gl_spin);
-        if (find_first_holder(gl) == NULL &&
-            gl->gl_state != LM_ST_UNLOCKED && demote_ok(gl)) {
-                handle_callback(gl, LM_ST_UNLOCKED, 0, 0);
-                done_callback = 1;
+        spin_lock(&lru_lock);
+        while(nr && !list_empty(&lru_list)) {
+                gl = list_entry(lru_list.next, struct gfs2_glock, gl_lru);
+                list_del_init(&gl->gl_lru);
+                atomic_dec(&lru_count);
+
+                /* Test for being demotable */
+                if (!test_and_set_bit(GLF_LOCK, &gl->gl_flags)) {
+                        gfs2_glock_hold(gl);
+                        got_ref = 1;
+                        spin_unlock(&lru_lock);
+                        spin_lock(&gl->gl_spin);
+                        may_demote = demote_ok(gl);
+                        spin_unlock(&gl->gl_spin);
+                        clear_bit(GLF_LOCK, &gl->gl_flags);
+                        if (may_demote) {
+                                handle_callback(gl, LM_ST_UNLOCKED, 0);
+                                nr--;
+                                if (queue_delayed_work(glock_workqueue, &gl->gl_work, 0) == 0)
+                                        gfs2_glock_put(gl);
+                        }
+                        spin_lock(&lru_lock);
+                        if (may_demote)
+                                continue;
+                }
+                if (list_empty(&gl->gl_lru) &&
+                    (atomic_read(&gl->gl_ref) <= (2 + got_ref))) {
+                        nr_skipped++;
+                        list_add(&gl->gl_lru, &skipped);
+                }
+                if (got_ref) {
+                        spin_unlock(&lru_lock);
+                        gfs2_glock_put(gl);
+                        spin_lock(&lru_lock);
+                        got_ref = 0;
+                }
         }
-        spin_unlock(&gl->gl_spin);
-        if (!done_callback ||
-            queue_delayed_work(glock_workqueue, &gl->gl_work, 0) == 0)
-                gfs2_glock_put(gl);
+        list_splice(&skipped, &lru_list);
+        atomic_add(nr_skipped, &lru_count);
+        spin_unlock(&lru_lock);
+out:
+        return (atomic_read(&lru_count) / 100) * sysctl_vfs_cache_pressure;
 }
 
+static struct shrinker glock_shrinker = {
+        .shrink = gfs2_shrink_glock_memory,
+        .seeks = DEFAULT_SEEKS,
+};
+
 /**
  * examine_bucket - Call a function for glock in a hash bucket
  * @examiner: the function
@@ -1476,26 +1502,6 @@ out:
 }
 
 /**
- * scan_glock - look at a glock and see if we can reclaim it
- * @gl: the glock to look at
- *
- */
-
-static void scan_glock(struct gfs2_glock *gl)
-{
-        if (gl->gl_ops == &gfs2_inode_glops && gl->gl_object)
-                return;
-        if (test_bit(GLF_LOCK, &gl->gl_flags))
-                return;
-
-        spin_lock(&gl->gl_spin);
-        if (find_first_holder(gl) == NULL &&
-            gl->gl_state != LM_ST_UNLOCKED && demote_ok(gl))
-                gfs2_glock_schedule_for_reclaim(gl);
-        spin_unlock(&gl->gl_spin);
-}
-
-/**
  * clear_glock - look at a glock and see if we can free it from glock cache
  * @gl: the glock to look at
  *
@@ -1503,23 +1509,16 @@ static void scan_glock(struct gfs2_glock *gl)
 
 static void clear_glock(struct gfs2_glock *gl)
 {
-        struct gfs2_sbd *sdp = gl->gl_sbd;
-        int released;
-
-        spin_lock(&sdp->sd_reclaim_lock);
-        if (!list_empty(&gl->gl_reclaim)) {
-                list_del_init(&gl->gl_reclaim);
-                atomic_dec(&sdp->sd_reclaim_count);
-                spin_unlock(&sdp->sd_reclaim_lock);
-                released = gfs2_glock_put(gl);
-                gfs2_assert(sdp, !released);
-        } else {
-                spin_unlock(&sdp->sd_reclaim_lock);
+        spin_lock(&lru_lock);
+        if (!list_empty(&gl->gl_lru)) {
+                list_del_init(&gl->gl_lru);
+                atomic_dec(&lru_count);
         }
+        spin_unlock(&lru_lock);
 
         spin_lock(&gl->gl_spin);
         if (find_first_holder(gl) == NULL && gl->gl_state != LM_ST_UNLOCKED)
-                handle_callback(gl, LM_ST_UNLOCKED, 0, 0);
+                handle_callback(gl, LM_ST_UNLOCKED, 0);
         spin_unlock(&gl->gl_spin);
         gfs2_glock_hold(gl);
         if (queue_delayed_work(glock_workqueue, &gl->gl_work, 0) == 0)
@@ -1656,8 +1655,6 @@ static const char *gflags2str(char *buf, const unsigned long *gflags)
         char *p = buf;
         if (test_bit(GLF_LOCK, gflags))
                 *p++ = 'l';
-        if (test_bit(GLF_STICKY, gflags))
-                *p++ = 's';
         if (test_bit(GLF_DEMOTE, gflags))
                 *p++ = 'D';
         if (test_bit(GLF_PENDING_DEMOTE, gflags))
@@ -1776,34 +1773,6 @@ static int gfs2_dump_lockstate(struct gfs2_sbd *sdp)
         return error;
 }
 
-/**
- * gfs2_scand - Look for cached glocks and inodes to toss from memory
- * @sdp: Pointer to GFS2 superblock
- *
- * One of these daemons runs, finding candidates to add to sd_reclaim_list.
- * See gfs2_glockd()
- */
-
-static int gfs2_scand(void *data)
-{
-        unsigned x;
-        unsigned delay;
-
-        while (!kthread_should_stop()) {
-                for (x = 0; x < GFS2_GL_HASH_SIZE; x++)
-                        examine_bucket(scan_glock, NULL, x);
-                if (freezing(current))
-                        refrigerator();
-                delay = scand_secs;
-                if (delay < 1)
-                        delay = 1;
-                schedule_timeout_interruptible(delay * HZ);
-        }
-
-        return 0;
-}
-
-
 
 int __init gfs2_glock_init(void)
 {
@@ -1817,28 +1786,21 @@ int __init gfs2_glock_init(void)
         }
 #endif
 
-        scand_process = kthread_run(gfs2_scand, NULL, "gfs2_scand");
-        if (IS_ERR(scand_process))
-                return PTR_ERR(scand_process);
-
         glock_workqueue = create_workqueue("glock_workqueue");
-        if (IS_ERR(glock_workqueue)) {
-                kthread_stop(scand_process);
+        if (IS_ERR(glock_workqueue))
                 return PTR_ERR(glock_workqueue);
-        }
+
+        register_shrinker(&glock_shrinker);
 
         return 0;
 }
 
 void gfs2_glock_exit(void)
 {
+        unregister_shrinker(&glock_shrinker);
         destroy_workqueue(glock_workqueue);
-        kthread_stop(scand_process);
 }
 
-module_param(scand_secs, uint, S_IRUGO|S_IWUSR);
-MODULE_PARM_DESC(scand_secs, "The number of seconds between scand runs");
-
 static int gfs2_glock_iter_next(struct gfs2_glock_iter *gi)
 {
         struct gfs2_glock *gl;
diff --git a/fs/gfs2/glock.h b/fs/gfs2/glock.h
index 13a64ee6523b..543ec7ecfbda 100644
--- a/fs/gfs2/glock.h
+++ b/fs/gfs2/glock.h
@@ -129,7 +129,6 @@ int gfs2_lvb_hold(struct gfs2_glock *gl);
 void gfs2_lvb_unhold(struct gfs2_glock *gl);
 
 void gfs2_glock_cb(void *cb_data, unsigned int type, void *data);
-void gfs2_glock_schedule_for_reclaim(struct gfs2_glock *gl);
 void gfs2_reclaim_glock(struct gfs2_sbd *sdp);
 void gfs2_gl_hash_clear(struct gfs2_sbd *sdp);
 void gfs2_glock_finish_truncate(struct gfs2_inode *ip);
diff --git a/fs/gfs2/glops.c b/fs/gfs2/glops.c
index 8ebff8ebae20..8522d3aa64fc 100644
--- a/fs/gfs2/glops.c
+++ b/fs/gfs2/glops.c
@@ -201,19 +201,12 @@ static void inode_go_inval(struct gfs2_glock *gl, int flags)
  * Returns: 1 if it's ok
  */
 
-static int inode_go_demote_ok(struct gfs2_glock *gl)
+static int inode_go_demote_ok(const struct gfs2_glock *gl)
 {
         struct gfs2_sbd *sdp = gl->gl_sbd;
-        int demote = 0;
-
-        if (!gl->gl_object && !gl->gl_aspace->i_mapping->nrpages)
-                demote = 1;
-        else if (!sdp->sd_args.ar_localcaching &&
-                 time_after_eq(jiffies, gl->gl_stamp +
-                               gfs2_tune_get(sdp, gt_demote_secs) * HZ))
-                demote = 1;
-
-        return demote;
+        if (sdp->sd_jindex == gl->gl_object || sdp->sd_rindex == gl->gl_object)
+                return 0;
+        return 1;
 }
 
 /**
@@ -284,7 +277,7 @@ static int inode_go_dump(struct seq_file *seq, const struct gfs2_glock *gl)
  * Returns: 1 if it's ok
  */
 
-static int rgrp_go_demote_ok(struct gfs2_glock *gl)
+static int rgrp_go_demote_ok(const struct gfs2_glock *gl)
 {
         return !gl->gl_aspace->i_mapping->nrpages;
 }
@@ -386,13 +379,25 @@ static int trans_go_xmote_bh(struct gfs2_glock *gl, struct gfs2_holder *gh)
 }
 
 /**
+ * trans_go_demote_ok
+ * @gl: the glock
+ *
+ * Always returns 0
+ */
+
+static int trans_go_demote_ok(const struct gfs2_glock *gl)
+{
+        return 0;
+}
+
+/**
  * quota_go_demote_ok - Check to see if it's ok to unlock a quota glock
  * @gl: the glock
  *
  * Returns: 1 if it's ok
  */
 
-static int quota_go_demote_ok(struct gfs2_glock *gl)
+static int quota_go_demote_ok(const struct gfs2_glock *gl)
 {
         return !atomic_read(&gl->gl_lvb_count);
 }
@@ -426,6 +431,7 @@ const struct gfs2_glock_operations gfs2_rgrp_glops = {
 const struct gfs2_glock_operations gfs2_trans_glops = {
         .go_xmote_th = trans_go_sync,
         .go_xmote_bh = trans_go_xmote_bh,
+        .go_demote_ok = trans_go_demote_ok,
         .go_type = LM_TYPE_NONDISK,
 };
 
diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h
index dd7d0f8f3575..608849d00021 100644
--- a/fs/gfs2/incore.h
+++ b/fs/gfs2/incore.h
@@ -125,7 +125,7 @@ struct gfs2_glock_operations {
         void (*go_xmote_th) (struct gfs2_glock *gl);
         int (*go_xmote_bh) (struct gfs2_glock *gl, struct gfs2_holder *gh);
         void (*go_inval) (struct gfs2_glock *gl, int flags);
-        int (*go_demote_ok) (struct gfs2_glock *gl);
+        int (*go_demote_ok) (const struct gfs2_glock *gl);
         int (*go_lock) (struct gfs2_holder *gh);
         void (*go_unlock) (struct gfs2_holder *gh);
         int (*go_dump)(struct seq_file *seq, const struct gfs2_glock *gl);
@@ -155,7 +155,6 @@ struct gfs2_holder {
 
 enum {
         GLF_LOCK                        = 1,
-        GLF_STICKY                      = 2,
         GLF_DEMOTE                      = 3,
         GLF_PENDING_DEMOTE              = 4,
         GLF_DEMOTE_IN_PROGRESS          = 5,
@@ -190,7 +189,7 @@ struct gfs2_glock {
         unsigned long gl_tchange;
         void *gl_object;
 
-        struct list_head gl_reclaim;
+        struct list_head gl_lru;
 
         struct gfs2_sbd *gl_sbd;
 
@@ -397,7 +396,6 @@ struct gfs2_args {
 struct gfs2_tune {
         spinlock_t gt_spin;
 
-        unsigned int gt_demote_secs; /* Cache retention for unheld glock */
         unsigned int gt_incore_log_blocks;
         unsigned int gt_log_flush_secs;
 
@@ -478,10 +476,6 @@ struct gfs2_sbd {
         /* Lock Stuff */
 
         struct lm_lockstruct sd_lockstruct;
-        struct list_head sd_reclaim_list;
-        spinlock_t sd_reclaim_lock;
-        wait_queue_head_t sd_reclaim_wq;
-        atomic_t sd_reclaim_count;
         struct gfs2_holder sd_live_gh;
         struct gfs2_glock *sd_rename_gl;
         struct gfs2_glock *sd_trans_gl;
@@ -541,8 +535,6 @@ struct gfs2_sbd {
         struct task_struct *sd_recoverd_process;
         struct task_struct *sd_logd_process;
         struct task_struct *sd_quotad_process;
-        struct task_struct *sd_glockd_process[GFS2_GLOCKD_MAX];
-        unsigned int sd_glockd_num;
 
         /* Quota stuff */
 
@@ -615,10 +607,6 @@ struct gfs2_sbd {
         struct mutex sd_freeze_lock;
         unsigned int sd_freeze_count;
 
-        /* Counters */
-
-        atomic_t sd_reclaimed;
-
         char sd_fsname[GFS2_FSNAME_LEN];
         char sd_table_name[GFS2_FSNAME_LEN];
         char sd_proto_name[GFS2_FSNAME_LEN];
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index 97d3ce65e26f..3b87c188da41 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -386,7 +386,6 @@ int gfs2_dinode_dealloc(struct gfs2_inode *ip)
         gfs2_free_di(rgd, ip);
 
         gfs2_trans_end(sdp);
-        clear_bit(GLF_STICKY, &ip->i_gl->gl_flags);
 
 out_rg_gunlock:
         gfs2_glock_dq_uninit(&al->al_rgd_gh);
diff --git a/fs/gfs2/main.c b/fs/gfs2/main.c
index cf39295ccb90..7cacfde32194 100644
--- a/fs/gfs2/main.c
+++ b/fs/gfs2/main.c
@@ -43,7 +43,7 @@ static void gfs2_init_glock_once(void *foo)
         INIT_LIST_HEAD(&gl->gl_holders);
         gl->gl_lvb = NULL;
         atomic_set(&gl->gl_lvb_count, 0);
-        INIT_LIST_HEAD(&gl->gl_reclaim);
+        INIT_LIST_HEAD(&gl->gl_lru);
         INIT_LIST_HEAD(&gl->gl_ail_list);
         atomic_set(&gl->gl_ail_count, 0);
 }
diff --git a/fs/gfs2/mount.c b/fs/gfs2/mount.c
index f96eb90a2cfa..8c0f16e301f6 100644
--- a/fs/gfs2/mount.c
+++ b/fs/gfs2/mount.c
@@ -32,7 +32,6 @@ enum {
         Opt_debug,
         Opt_nodebug,
         Opt_upgrade,
-        Opt_num_glockd,
         Opt_acl,
         Opt_noacl,
         Opt_quota_off,
@@ -57,7 +56,6 @@ static const match_table_t tokens = {
         {Opt_debug, "debug"},
         {Opt_nodebug, "nodebug"},
         {Opt_upgrade, "upgrade"},
-        {Opt_num_glockd, "num_glockd=%d"},
         {Opt_acl, "acl"},
         {Opt_noacl, "noacl"},
         {Opt_quota_off, "quota=off"},
@@ -96,7 +94,6 @@ int gfs2_mount_args(struct gfs2_sbd *sdp, char *data_arg, int remount)
                 spin_unlock(&gfs2_sys_margs_lock);
 
                 /*  Set some defaults  */
-                args->ar_num_glockd = GFS2_GLOCKD_DEFAULT;
                 args->ar_quota = GFS2_QUOTA_DEFAULT;
                 args->ar_data = GFS2_DATA_DEFAULT;
         }
@@ -105,7 +102,7 @@ int gfs2_mount_args(struct gfs2_sbd *sdp, char *data_arg, int remount)
            process them */
 
         for (options = data; (o = strsep(&options, ",")); ) {
-                int token, option;
+                int token;
                 substring_t tmp[MAX_OPT_ARGS];
 
                 if (!*o)
@@ -196,22 +193,6 @@ int gfs2_mount_args(struct gfs2_sbd *sdp, char *data_arg, int remount)
                                 goto cant_remount;
                         args->ar_upgrade = 1;
                         break;
-                case Opt_num_glockd:
-                        if ((error = match_int(&tmp[0], &option))) {
-                                fs_info(sdp, "problem getting num_glockd\n");
-                                goto out_error;
-                        }
-
-                        if (remount && option != args->ar_num_glockd)
-                                goto cant_remount;
-                        if (!option || option > GFS2_GLOCKD_MAX) {
-                                fs_info(sdp, "0 < num_glockd <= %u  (not %u)\n",
-                                        GFS2_GLOCKD_MAX, option);
-                                error = -EINVAL;
-                                goto out_error;
-                        }
-                        args->ar_num_glockd = option;
-                        break;
                 case Opt_acl:
                         args->ar_posix_acl = 1;
                         sdp->sd_vfs->s_flags |= MS_POSIXACL;
diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c
index d159e7e72722..fc300eafda84 100644
--- a/fs/gfs2/ops_fstype.c
+++ b/fs/gfs2/ops_fstype.c
@@ -22,7 +22,6 @@
 #include "gfs2.h"
 #include "incore.h"
 #include "bmap.h"
-#include "daemon.h"
 #include "glock.h"
 #include "glops.h"
 #include "inode.h"
@@ -56,7 +55,6 @@ static void gfs2_tune_init(struct gfs2_tune *gt)
 {
         spin_lock_init(&gt->gt_spin);
 
-        gt->gt_demote_secs = 300;
         gt->gt_incore_log_blocks = 1024;
         gt->gt_log_flush_secs = 60;
         gt->gt_recoverd_secs = 60;
@@ -88,10 +86,6 @@ static struct gfs2_sbd *init_sbd(struct super_block *sb)
 
         gfs2_tune_init(&sdp->sd_tune);
 
-        INIT_LIST_HEAD(&sdp->sd_reclaim_list);
-        spin_lock_init(&sdp->sd_reclaim_lock);
-        init_waitqueue_head(&sdp->sd_reclaim_wq);
-
         mutex_init(&sdp->sd_inum_mutex);
         spin_lock_init(&sdp->sd_statfs_spin);
 
@@ -443,24 +437,11 @@ out:
 static int init_locking(struct gfs2_sbd *sdp, struct gfs2_holder *mount_gh,
                         int undo)
 {
-        struct task_struct *p;
         int error = 0;
 
         if (undo)
                 goto fail_trans;
 
-        for (sdp->sd_glockd_num = 0;
-             sdp->sd_glockd_num < sdp->sd_args.ar_num_glockd;
-             sdp->sd_glockd_num++) {
-                p = kthread_run(gfs2_glockd, sdp, "gfs2_glockd");
-                error = IS_ERR(p);
-                if (error) {
-                        fs_err(sdp, "can't start glockd thread: %d\n", error);
-                        goto fail;
-                }
-                sdp->sd_glockd_process[sdp->sd_glockd_num] = p;
-        }
-
         error = gfs2_glock_nq_num(sdp,
                                   GFS2_MOUNT_LOCK, &gfs2_nondisk_glops,
                                   LM_ST_EXCLUSIVE, LM_FLAG_NOEXP | GL_NOCACHE,
@@ -493,7 +474,6 @@ static int init_locking(struct gfs2_sbd *sdp, struct gfs2_holder *mount_gh,
                 fs_err(sdp, "can't create transaction glock: %d\n", error);
                 goto fail_rename;
         }
-        set_bit(GLF_STICKY, &sdp->sd_trans_gl->gl_flags);
 
         return 0;
 
@@ -506,9 +486,6 @@ fail_live:
 fail_mount:
         gfs2_glock_dq_uninit(mount_gh);
 fail:
-        while (sdp->sd_glockd_num--)
-                kthread_stop(sdp->sd_glockd_process[sdp->sd_glockd_num]);
-
         return error;
 }
 
@@ -681,7 +658,6 @@ static int init_journal(struct gfs2_sbd *sdp, int undo)
                 return PTR_ERR(sdp->sd_jindex);
         }
         ip = GFS2_I(sdp->sd_jindex);
-        set_bit(GLF_STICKY, &ip->i_gl->gl_flags);
 
         /* Load in the journal index special file */
 
@@ -832,7 +808,6 @@ static int init_inodes(struct gfs2_sbd *sdp, int undo)
                 goto fail_statfs;
         }
         ip = GFS2_I(sdp->sd_rindex);
-        set_bit(GLF_STICKY, &ip->i_gl->gl_flags);
         sdp->sd_rindex_uptodate = 0;
 
         /* Read in the quota inode */
diff --git a/fs/gfs2/ops_super.c b/fs/gfs2/ops_super.c
index ad36af254fee..29f8a5c0b45b 100644
--- a/fs/gfs2/ops_super.c
+++ b/fs/gfs2/ops_super.c
@@ -142,8 +142,6 @@ static void gfs2_put_super(struct super_block *sb)
         kthread_stop(sdp->sd_quotad_process);
         kthread_stop(sdp->sd_logd_process);
         kthread_stop(sdp->sd_recoverd_process);
-        while (sdp->sd_glockd_num--)
-                kthread_stop(sdp->sd_glockd_process[sdp->sd_glockd_num]);
 
         if (!(sb->s_flags & MS_RDONLY)) {
                 error = gfs2_make_fs_ro(sdp);
@@ -369,7 +367,6 @@ static void gfs2_clear_inode(struct inode *inode)
          */
         if (test_bit(GIF_USER, &ip->i_flags)) {
                 ip->i_gl->gl_object = NULL;
-                gfs2_glock_schedule_for_reclaim(ip->i_gl);
                 gfs2_glock_put(ip->i_gl);
                 ip->i_gl = NULL;
                 if (ip->i_iopen_gh.gh_gl) {
@@ -422,8 +419,6 @@ static int gfs2_show_options(struct seq_file *s, struct vfsmount *mnt)
                 seq_printf(s, ",debug");
         if (args->ar_upgrade)
                 seq_printf(s, ",upgrade");
-        if (args->ar_num_glockd != GFS2_GLOCKD_DEFAULT)
-                seq_printf(s, ",num_glockd=%u", args->ar_num_glockd);
         if (args->ar_posix_acl)
                 seq_printf(s, ",acl");
         if (args->ar_quota != GFS2_QUOTA_DEFAULT) {
diff --git a/fs/gfs2/sys.c b/fs/gfs2/sys.c
index 59e36fd80903..67ba5b7b759b 100644
--- a/fs/gfs2/sys.c
+++ b/fs/gfs2/sys.c
@@ -263,7 +263,6 @@ ARGS_ATTR(localcaching,    "%d\n");
 ARGS_ATTR(localflocks,     "%d\n");
 ARGS_ATTR(debug,           "%d\n");
 ARGS_ATTR(upgrade,         "%d\n");
-ARGS_ATTR(num_glockd,      "%u\n");
 ARGS_ATTR(posix_acl,       "%d\n");
 ARGS_ATTR(quota,           "%u\n");
 ARGS_ATTR(suiddir,         "%d\n");
@@ -279,7 +278,6 @@ static struct attribute *args_attrs[] = {
         &args_attr_localflocks.attr,
         &args_attr_debug.attr,
         &args_attr_upgrade.attr,
-        &args_attr_num_glockd.attr,
         &args_attr_posix_acl.attr,
         &args_attr_quota.attr,
         &args_attr_suiddir.attr,
@@ -288,30 +286,6 @@ static struct attribute *args_attrs[] = {
 };
 
 /*
- * display counters from superblock
- */
-
-struct counters_attr {
-        struct attribute attr;
-        ssize_t (*show)(struct gfs2_sbd *, char *);
-};
-
-#define COUNTERS_ATTR(name, fmt)                                            \
-static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf)                 \
-{                                                                           \
-        return snprintf(buf, PAGE_SIZE, fmt,                                \
-                        (unsigned int)atomic_read(&sdp->sd_##name));        \
-}                                                                           \
-static struct counters_attr counters_attr_##name = __ATTR_RO(name)
-
-COUNTERS_ATTR(reclaimed,        "%u\n");
-
-static struct attribute *counters_attrs[] = {
-        &counters_attr_reclaimed.attr,
-        NULL,
-};
-
-/*
  * get and set struct gfs2_tune fields
  */
 
@@ -393,7 +367,6 @@ static ssize_t name##_store(struct gfs2_sbd *sdp, const char *buf, size_t len)\
 }                                                                             \
 TUNE_ATTR_2(name, name##_store)
 
-TUNE_ATTR(demote_secs, 0);
 TUNE_ATTR(incore_log_blocks, 0);
 TUNE_ATTR(log_flush_secs, 0);
 TUNE_ATTR(quota_warn_period, 0);
@@ -411,7 +384,6 @@ TUNE_ATTR_DAEMON(logd_secs, logd_process);
 TUNE_ATTR_3(quota_scale, quota_scale_show, quota_scale_store);
 
 static struct attribute *tune_attrs[] = {
-        &tune_attr_demote_secs.attr,
         &tune_attr_incore_log_blocks.attr,
         &tune_attr_log_flush_secs.attr,
         &tune_attr_quota_warn_period.attr,
@@ -435,11 +407,6 @@ static struct attribute_group lockstruct_group = {
         .attrs = lockstruct_attrs,
 };
 
-static struct attribute_group counters_group = {
-        .name = "counters",
-        .attrs = counters_attrs,
-};
-
 static struct attribute_group args_group = {
         .name = "args",
         .attrs = args_attrs,
@@ -464,13 +431,9 @@ int gfs2_sys_fs_add(struct gfs2_sbd *sdp)
         if (error)
                 goto fail_reg;
 
-        error = sysfs_create_group(&sdp->sd_kobj, &counters_group);
-        if (error)
-                goto fail_lockstruct;
-
         error = sysfs_create_group(&sdp->sd_kobj, &args_group);
         if (error)
-                goto fail_counters;
+                goto fail_lockstruct;
 
         error = sysfs_create_group(&sdp->sd_kobj, &tune_group);
         if (error)
@@ -481,8 +444,6 @@ int gfs2_sys_fs_add(struct gfs2_sbd *sdp)
 
 fail_args:
         sysfs_remove_group(&sdp->sd_kobj, &args_group);
-fail_counters:
-        sysfs_remove_group(&sdp->sd_kobj, &counters_group);
 fail_lockstruct:
         sysfs_remove_group(&sdp->sd_kobj, &lockstruct_group);
 fail_reg:
@@ -496,7 +457,6 @@ void gfs2_sys_fs_del(struct gfs2_sbd *sdp)
 {
         sysfs_remove_group(&sdp->sd_kobj, &tune_group);
         sysfs_remove_group(&sdp->sd_kobj, &args_group);
-        sysfs_remove_group(&sdp->sd_kobj, &counters_group);
         sysfs_remove_group(&sdp->sd_kobj, &lockstruct_group);
         kobject_put(&sdp->sd_kobj);
 }