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-rw-r--r--include/net/9p/9p.h2
-rw-r--r--net/9p/client.c23
2 files changed, 18 insertions, 7 deletions
diff --git a/include/net/9p/9p.h b/include/net/9p/9p.h
index 7aefa6d975a..eaa45f93297 100644
--- a/include/net/9p/9p.h
+++ b/include/net/9p/9p.h
@@ -688,7 +688,7 @@ struct p9_rwstat {
* @id: protocol operating identifier of type &p9_msg_t
* @tag: transaction id of the request
* @offset: used by marshalling routines to track currentposition in buffer
- * @capacity: used by marshalling routines to track total capacity
+ * @capacity: used by marshalling routines to track total malloc'd capacity
* @pubuf: Payload user buffer given by the caller
* @pubuf: Payload kernel buffer given by the caller
* @pbuf_size: pubuf/pkbuf(only one will be !NULL) size to be read/write.
diff --git a/net/9p/client.c b/net/9p/client.c
index 251abb1699c..43ec78af454 100644
--- a/net/9p/client.c
+++ b/net/9p/client.c
@@ -229,10 +229,23 @@ static struct p9_req_t *p9_tag_alloc(struct p9_client *c, u16 tag)
return ERR_PTR(-ENOMEM);
}
init_waitqueue_head(req->wq);
- req->tc = kmalloc(sizeof(struct p9_fcall)+c->msize,
- GFP_KERNEL);
- req->rc = kmalloc(sizeof(struct p9_fcall)+c->msize,
- GFP_KERNEL);
+ if ((c->trans_mod->pref & P9_TRANS_PREF_PAYLOAD_MASK) ==
+ P9_TRANS_PREF_PAYLOAD_SEP) {
+ int alloc_msize = min(c->msize, 4096);
+ req->tc = kmalloc(sizeof(struct p9_fcall)+alloc_msize,
+ GFP_KERNEL);
+ req->tc->capacity = alloc_msize;
+ req->rc = kmalloc(sizeof(struct p9_fcall)+alloc_msize,
+ GFP_KERNEL);
+ req->rc->capacity = alloc_msize;
+ } else {
+ req->tc = kmalloc(sizeof(struct p9_fcall)+c->msize,
+ GFP_KERNEL);
+ req->tc->capacity = c->msize;
+ req->rc = kmalloc(sizeof(struct p9_fcall)+c->msize,
+ GFP_KERNEL);
+ req->rc->capacity = c->msize;
+ }
if ((!req->tc) || (!req->rc)) {
printk(KERN_ERR "Couldn't grow tag array\n");
kfree(req->tc);
@@ -243,9 +256,7 @@ static struct p9_req_t *p9_tag_alloc(struct p9_client *c, u16 tag)
return ERR_PTR(-ENOMEM);
}
req->tc->sdata = (char *) req->tc + sizeof(struct p9_fcall);
- req->tc->capacity = c->msize;
req->rc->sdata = (char *) req->rc + sizeof(struct p9_fcall);
- req->rc->capacity = c->msize;
}
p9pdu_reset(req->tc);