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9p: Make sure we are able to clunk the cached fid on umount

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dcache prune happen on umount. So we cannot mark the client
satus disconnect. That will prevent a 9p call to the server

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
This commit is contained in:
Aneesh Kumar K.V
2010-03-29 18:13:59 -05:00
committed by Eric Van Hensbergen
parent d994f4058d
commit 6d96d3ab7a
5 changed files with 34 additions and 3 deletions
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18
net/9p/client.c
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@@ -533,7 +533,12 @@ p9_client_rpc(struct p9_client *c, int8_t type, const char *fmt, ...)
P9_DPRINTK(P9_DEBUG_MUX, "client %p op %d\n", c, type);
if (c->status != Connected)
/* we allow for any status other than disconnected */
if (c->status == Disconnected)
return ERR_PTR(-EIO);
/* if status is begin_disconnected we allow only clunk request */
if ((c->status == BeginDisconnect) && (type != P9_TCLUNK))
return ERR_PTR(-EIO);
if (signal_pending(current)) {
@@ -799,8 +804,10 @@ void p9_client_destroy(struct p9_client *clnt)
v9fs_put_trans(clnt->trans_mod);
list_for_each_entry_safe(fid, fidptr, &clnt->fidlist, flist)
list_for_each_entry_safe(fid, fidptr, &clnt->fidlist, flist) {
printk(KERN_INFO "Found fid %d not clunked\n", fid->fid);
p9_fid_destroy(fid);
}
if (clnt->fidpool)
p9_idpool_destroy(clnt->fidpool);
@@ -818,6 +825,13 @@ void p9_client_disconnect(struct p9_client *clnt)
}
EXPORT_SYMBOL(p9_client_disconnect);
void p9_client_begin_disconnect(struct p9_client *clnt)
{
P9_DPRINTK(P9_DEBUG_9P, "clnt %p\n", clnt);
clnt->status = BeginDisconnect;
}
EXPORT_SYMBOL(p9_client_begin_disconnect);
struct p9_fid *p9_client_attach(struct p9_client *clnt, struct p9_fid *afid,
char *uname, u32 n_uname, char *aname)
{