cifs: add new cifsiod_wq workqueue
...and convert existing cifs users of system_nrt_wq to use that instead.
Also, make it freezable, and set WQ_MEM_RECLAIM since we use it to
deal with write reply handling.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Acked-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index eee522c..d342128 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -85,6 +85,8 @@
extern mempool_t *cifs_req_poolp;
extern mempool_t *cifs_mid_poolp;
+struct workqueue_struct *cifsiod_wq;
+
static int
cifs_read_super(struct super_block *sb)
{
@@ -1111,9 +1113,15 @@
cFYI(1, "cifs_max_pending set to max of %u", CIFS_MAX_REQ);
}
+ cifsiod_wq = alloc_workqueue("cifsiod", WQ_FREEZABLE|WQ_MEM_RECLAIM, 0);
+ if (!cifsiod_wq) {
+ rc = -ENOMEM;
+ goto out_clean_proc;
+ }
+
rc = cifs_fscache_register();
if (rc)
- goto out_clean_proc;
+ goto out_destroy_wq;
rc = cifs_init_inodecache();
if (rc)
@@ -1161,6 +1169,8 @@
cifs_destroy_inodecache();
out_unreg_fscache:
cifs_fscache_unregister();
+out_destroy_wq:
+ destroy_workqueue(cifsiod_wq);
out_clean_proc:
cifs_proc_clean();
return rc;
@@ -1183,6 +1193,7 @@
cifs_destroy_mids();
cifs_destroy_inodecache();
cifs_fscache_unregister();
+ destroy_workqueue(cifsiod_wq);
cifs_proc_clean();
}
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index d5ccd46..79eba5a1 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -1070,5 +1070,6 @@
void cifs_oplock_break(struct work_struct *work);
extern const struct slow_work_ops cifs_oplock_break_ops;
+extern struct workqueue_struct *cifsiod_wq;
#endif /* _CIFS_GLOB_H */
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index f0b1c59..76d8981 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -1689,7 +1689,7 @@
rdata->result = -EIO;
}
- queue_work(system_nrt_wq, &rdata->work);
+ queue_work(cifsiod_wq, &rdata->work);
DeleteMidQEntry(mid);
cifs_add_credits(server, 1);
}
@@ -2129,7 +2129,7 @@
break;
}
- queue_work(system_nrt_wq, &wdata->work);
+ queue_work(cifsiod_wq, &wdata->work);
DeleteMidQEntry(mid);
cifs_add_credits(tcon->ses->server, 1);
}
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index f3c9329..855d8c0 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -335,7 +335,7 @@
server->hostname);
requeue_echo:
- queue_delayed_work(system_nrt_wq, &server->echo, SMB_ECHO_INTERVAL);
+ queue_delayed_work(cifsiod_wq, &server->echo, SMB_ECHO_INTERVAL);
}
static bool
@@ -1971,7 +1971,7 @@
cifs_fscache_get_client_cookie(tcp_ses);
/* queue echo request delayed work */
- queue_delayed_work(system_nrt_wq, &tcp_ses->echo, SMB_ECHO_INTERVAL);
+ queue_delayed_work(cifsiod_wq, &tcp_ses->echo, SMB_ECHO_INTERVAL);
return tcp_ses;
@@ -3537,7 +3537,7 @@
tlink_rb_insert(&cifs_sb->tlink_tree, tlink);
spin_unlock(&cifs_sb->tlink_tree_lock);
- queue_delayed_work(system_nrt_wq, &cifs_sb->prune_tlinks,
+ queue_delayed_work(cifsiod_wq, &cifs_sb->prune_tlinks,
TLINK_IDLE_EXPIRE);
mount_fail_check:
@@ -4091,6 +4091,6 @@
}
spin_unlock(&cifs_sb->tlink_tree_lock);
- queue_delayed_work(system_nrt_wq, &cifs_sb->prune_tlinks,
+ queue_delayed_work(cifsiod_wq, &cifs_sb->prune_tlinks,
TLINK_IDLE_EXPIRE);
}
diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c
index 425e4f2..c29d1aa 100644
--- a/fs/cifs/misc.c
+++ b/fs/cifs/misc.c
@@ -595,7 +595,7 @@
cifs_set_oplock_level(pCifsInode,
pSMB->OplockLevel ? OPLOCK_READ : 0);
- queue_work(system_nrt_wq,
+ queue_work(cifsiod_wq,
&netfile->oplock_break);
netfile->oplock_break_cancelled = false;