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authorTom Tucker <tom@opengridcomputing.com>2008-10-23 16:31:02 -0500
committerEric Van Hensbergen <ericvh@gmail.com>2008-11-05 13:19:06 -0600
commitcac23d6505546f4cfa42d949ec46d431a44bd39c (patch)
treebdeec0c970ef4cb1ebcb6e479eff0429f6381fed /net/9p/client.c
parent517ac45af4b55913587279d89001171c222f22e7 (diff)
downloadlinux-2.6.38-lt-ux500-cac23d6505546f4cfa42d949ec46d431a44bd39c.tar.gz
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>
Diffstat (limited to 'net/9p/client.c')
-rw-r--r--net/9p/client.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/net/9p/client.c b/net/9p/client.c
index 67717f69412..f4e6c05b3c6 100644
--- a/net/9p/client.c
+++ b/net/9p/client.c
@@ -613,6 +613,7 @@ static struct p9_fid *p9_fid_create(struct p9_client *clnt)
{
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 @@ static struct p9_fid *p9_fid_create(struct p9_client *clnt)
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 @@ error:
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);
}