9p: Make all client spin locks IRQ safe
The client lock must be IRQ safe. Some of the lock acquisition paths
took regular spin locks.
Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
diff --git a/net/9p/client.c b/net/9p/client.c
index 67717f6..f4e6c05 100644
--- a/net/9p/client.c
+++ b/net/9p/client.c
@@ -613,6 +613,7 @@
{
int err;
struct p9_fid *fid;
+ unsigned long flags;
P9_DPRINTK(P9_DEBUG_FID, "clnt %p\n", clnt);
fid = kmalloc(sizeof(struct p9_fid), GFP_KERNEL);
@@ -632,9 +633,9 @@
fid->clnt = clnt;
fid->aux = NULL;
- spin_lock(&clnt->lock);
+ spin_lock_irqsave(&clnt->lock, flags);
list_add(&fid->flist, &clnt->fidlist);
- spin_unlock(&clnt->lock);
+ spin_unlock_irqrestore(&clnt->lock, flags);
return fid;
@@ -646,13 +647,14 @@
static void p9_fid_destroy(struct p9_fid *fid)
{
struct p9_client *clnt;
+ unsigned long flags;
P9_DPRINTK(P9_DEBUG_FID, "fid %d\n", fid->fid);
clnt = fid->clnt;
p9_idpool_put(fid->fid, clnt->fidpool);
- spin_lock(&clnt->lock);
+ spin_lock_irqsave(&clnt->lock, flags);
list_del(&fid->flist);
- spin_unlock(&clnt->lock);
+ spin_unlock_irqrestore(&clnt->lock, flags);
kfree(fid);
}