Merge branch 'for-2.6.39' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq

* 'for-2.6.39' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
  workqueue: fix build failure introduced by s/freezeable/freezable/
  workqueue: add system_freezeable_wq
  rds/ib: use system_wq instead of rds_ib_fmr_wq
  net/9p: replace p9_poll_task with a work
  net/9p: use system_wq instead of p9_mux_wq
  xfs: convert to alloc_workqueue()
  reiserfs: make commit_wq use the default concurrency level
  ocfs2: use system_wq instead of ocfs2_quota_wq
  ext4: convert to alloc_workqueue()
  scsi/scsi_tgt_lib: scsi_tgtd isn't used in memory reclaim path
  scsi/be2iscsi,qla2xxx: convert to alloc_workqueue()
  misc/iwmc3200top: use system_wq instead of dedicated workqueues
  i2o: use alloc_workqueue() instead of create_workqueue()
  acpi: kacpi*_wq don't need WQ_MEM_RECLAIM
  fs/aio: aio_wq isn't used in memory reclaim path
  input/tps6507x-ts: use system_wq instead of dedicated workqueue
  cpufreq: use system_wq instead of dedicated workqueues
  wireless/ipw2x00: use system_wq instead of dedicated workqueues
  arm/omap: use system_wq in mailbox
  workqueue: use WQ_MEM_RECLAIM instead of WQ_RESCUER

9 files changed, 18 insertions, 41 deletions

diff --git a/fs/aio.c b/fs/aio.c
index 26869cde3953..7f54f43b8f7c 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -85,7 +85,7 @@ static int __init aio_setup(void)
         kiocb_cachep = KMEM_CACHE(kiocb, SLAB_HWCACHE_ALIGN|SLAB_PANIC);
         kioctx_cachep = KMEM_CACHE(kioctx,SLAB_HWCACHE_ALIGN|SLAB_PANIC);
 
-        aio_wq = create_workqueue("aio");
+        aio_wq = alloc_workqueue("aio", 0, 1);  /* used to limit concurrency */
         abe_pool = mempool_create_kmalloc_pool(1, sizeof(struct aio_batch_entry));
         BUG_ON(!aio_wq || !abe_pool);
 
@@ -577,7 +577,7 @@ static int __aio_put_req(struct kioctx *ctx, struct kiocb *req)
                 spin_lock(&fput_lock);
                 list_add(&req->ki_list, &fput_head);
                 spin_unlock(&fput_lock);
-                queue_work(aio_wq, &fput_work);
+                schedule_work(&fput_work);
         } else {
                 req->ki_filp = NULL;
                 really_put_req(ctx, req);
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 5977b356a435..203f9e4a70be 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -3511,7 +3511,12 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
         percpu_counter_set(&sbi->s_dirtyblocks_counter, 0);
 
 no_journal:
-        EXT4_SB(sb)->dio_unwritten_wq = create_workqueue("ext4-dio-unwritten");
+        /*
+         * The maximum number of concurrent works can be high and
+         * concurrency isn't really necessary.  Limit it to 1.
+         */
+        EXT4_SB(sb)->dio_unwritten_wq =
+                alloc_workqueue("ext4-dio-unwritten", WQ_MEM_RECLAIM, 1);
         if (!EXT4_SB(sb)->dio_unwritten_wq) {
                 printk(KERN_ERR "EXT4-fs: failed to create DIO workqueue\n");
                 goto failed_mount_wq;
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 2f8e61816d75..01768e5e2c9b 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -1518,7 +1518,7 @@ static int nfsiod_start(void)
 {
         struct workqueue_struct *wq;
         dprintk("RPC:       creating workqueue nfsiod\n");
-        wq = alloc_workqueue("nfsiod", WQ_RESCUER, 0);
+        wq = alloc_workqueue("nfsiod", WQ_MEM_RECLAIM, 0);
         if (wq == NULL)
                 return -ENOMEM;
         nfsiod_workqueue = wq;
diff --git a/fs/ocfs2/quota.h b/fs/ocfs2/quota.h
index 196fcb52d95d..d5ab56cbe5c5 100644
--- a/fs/ocfs2/quota.h
+++ b/fs/ocfs2/quota.h
@@ -114,7 +114,4 @@ int ocfs2_local_write_dquot(struct dquot *dquot);
 extern const struct dquot_operations ocfs2_quota_operations;
 extern struct quota_format_type ocfs2_quota_format;
 
-int ocfs2_quota_setup(void);
-void ocfs2_quota_shutdown(void);
-
 #endif /* _OCFS2_QUOTA_H */
diff --git a/fs/ocfs2/quota_global.c b/fs/ocfs2/quota_global.c
index 4607923eb24c..a73f64166481 100644
--- a/fs/ocfs2/quota_global.c
+++ b/fs/ocfs2/quota_global.c
@@ -63,8 +63,6 @@
  *        write to gf
  */
 
-static struct workqueue_struct *ocfs2_quota_wq = NULL;
-
 static void qsync_work_fn(struct work_struct *work);
 
 static void ocfs2_global_disk2memdqb(struct dquot *dquot, void *dp)
@@ -400,8 +398,8 @@ int ocfs2_global_read_info(struct super_block *sb, int type)
                                                 OCFS2_QBLK_RESERVED_SPACE;
         oinfo->dqi_gi.dqi_qtree_depth = qtree_depth(&oinfo->dqi_gi);
         INIT_DELAYED_WORK(&oinfo->dqi_sync_work, qsync_work_fn);
-        queue_delayed_work(ocfs2_quota_wq, &oinfo->dqi_sync_work,
-                           msecs_to_jiffies(oinfo->dqi_syncms));
+        schedule_delayed_work(&oinfo->dqi_sync_work,
+                              msecs_to_jiffies(oinfo->dqi_syncms));
 
 out_err:
         mlog_exit(status);
@@ -635,8 +633,8 @@ static void qsync_work_fn(struct work_struct *work)
         struct super_block *sb = oinfo->dqi_gqinode->i_sb;
 
         dquot_scan_active(sb, ocfs2_sync_dquot_helper, oinfo->dqi_type);
-        queue_delayed_work(ocfs2_quota_wq, &oinfo->dqi_sync_work,
-                           msecs_to_jiffies(oinfo->dqi_syncms));
+        schedule_delayed_work(&oinfo->dqi_sync_work,
+                              msecs_to_jiffies(oinfo->dqi_syncms));
 }
 
 /*
@@ -923,20 +921,3 @@ const struct dquot_operations ocfs2_quota_operations = {
         .alloc_dquot    = ocfs2_alloc_dquot,
         .destroy_dquot  = ocfs2_destroy_dquot,
 };
-
-int ocfs2_quota_setup(void)
-{
-        ocfs2_quota_wq = create_workqueue("o2quot");
-        if (!ocfs2_quota_wq)
-                return -ENOMEM;
-        return 0;
-}
-
-void ocfs2_quota_shutdown(void)
-{
-        if (ocfs2_quota_wq) {
-                flush_workqueue(ocfs2_quota_wq);
-                destroy_workqueue(ocfs2_quota_wq);
-                ocfs2_quota_wq = NULL;
-        }
-}
diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index 36c423fb0635..236ed1bdca2c 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -1657,16 +1657,11 @@ static int __init ocfs2_init(void)
                 mlog(ML_ERROR, "Unable to create ocfs2 debugfs root.\n");
         }
 
-        status = ocfs2_quota_setup();
-        if (status)
-                goto leave;
-
         ocfs2_set_locking_protocol();
 
         status = register_quota_format(&ocfs2_quota_format);
 leave:
         if (status < 0) {
-                ocfs2_quota_shutdown();
                 ocfs2_free_mem_caches();
                 exit_ocfs2_uptodate_cache();
         }
@@ -1683,8 +1678,6 @@ static void __exit ocfs2_exit(void)
 {
         mlog_entry_void();
 
-        ocfs2_quota_shutdown();
-
         if (ocfs2_wq) {
                 flush_workqueue(ocfs2_wq);
                 destroy_workqueue(ocfs2_wq);
diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c
index 3eea859e6990..c77514bd5776 100644
--- a/fs/reiserfs/journal.c
+++ b/fs/reiserfs/journal.c
@@ -2876,7 +2876,7 @@ int journal_init(struct super_block *sb, const char *j_dev_name,
         reiserfs_mounted_fs_count++;
         if (reiserfs_mounted_fs_count <= 1) {
                 reiserfs_write_unlock(sb);
-                commit_wq = create_workqueue("reiserfs");
+                commit_wq = alloc_workqueue("reiserfs", WQ_MEM_RECLAIM, 0);
                 reiserfs_write_lock(sb);
         }
 
diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c
index ac1c7e8378dd..f83a4c830a65 100644
--- a/fs/xfs/linux-2.6/xfs_buf.c
+++ b/fs/xfs/linux-2.6/xfs_buf.c
@@ -2022,11 +2022,12 @@ xfs_buf_init(void)
         if (!xfslogd_workqueue)
                 goto out_free_buf_zone;
 
-        xfsdatad_workqueue = create_workqueue("xfsdatad");
+        xfsdatad_workqueue = alloc_workqueue("xfsdatad", WQ_MEM_RECLAIM, 1);
         if (!xfsdatad_workqueue)
                 goto out_destroy_xfslogd_workqueue;
 
-        xfsconvertd_workqueue = create_workqueue("xfsconvertd");
+        xfsconvertd_workqueue = alloc_workqueue("xfsconvertd",
+                                                WQ_MEM_RECLAIM, 1);
         if (!xfsconvertd_workqueue)
                 goto out_destroy_xfsdatad_workqueue;
 
diff --git a/fs/xfs/xfs_mru_cache.c b/fs/xfs/xfs_mru_cache.c
index edfa178bafb6..4aff56395732 100644
--- a/fs/xfs/xfs_mru_cache.c
+++ b/fs/xfs/xfs_mru_cache.c
@@ -309,7 +309,7 @@ xfs_mru_cache_init(void)
         if (!xfs_mru_elem_zone)
                 goto out;
 
-        xfs_mru_reap_wq = create_singlethread_workqueue("xfs_mru_cache");
+        xfs_mru_reap_wq = alloc_workqueue("xfs_mru_cache", WQ_MEM_RECLAIM, 1);
         if (!xfs_mru_reap_wq)
                 goto out_destroy_mru_elem_zone;