9p for 5.15-rc1

a couple of harmless fixes, increase max tcp msize (64KB -> 1MB),
 and increase default msize (8KB -> 128KB)
 
 The default increase has been discussed with Christian
 for the qemu side of things but makes sense for all supported
 transports
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Merge tag '9p-for-5.15-rc1' of git://github.com/martinetd/linux

Pull 9p updates from Dominique Martinet:
 "A couple of harmless fixes, increase max tcp msize (64KB -> 1MB), and
  increase default msize (8KB -> 128KB)

  The default increase has been discussed with Christian for the qemu
  side of things but makes sense for all supported transports"

* tag '9p-for-5.15-rc1' of git://github.com/martinetd/linux:
  net/9p: increase default msize to 128k
  net/9p: use macro to define default msize
  net/9p: increase tcp max msize to 1MB
  9p/xen: Fix end of loop tests for list_for_each_entry
  9p/trans_virtio: Remove sysfs file on probe failure
This commit is contained in:
Linus Torvalds 2021-09-08 15:40:39 -07:00
commit 34c59da473
4 changed files with 10 additions and 6 deletions

View File

@ -30,6 +30,8 @@
#define CREATE_TRACE_POINTS
#include <trace/events/9p.h>
#define DEFAULT_MSIZE (128 * 1024)
/*
* Client Option Parsing (code inspired by NFS code)
* - a little lazy - parse all client options
@ -65,7 +67,7 @@ EXPORT_SYMBOL(p9_is_proto_dotu);
int p9_show_client_options(struct seq_file *m, struct p9_client *clnt)
{
if (clnt->msize != 8192)
if (clnt->msize != DEFAULT_MSIZE)
seq_printf(m, ",msize=%u", clnt->msize);
seq_printf(m, ",trans=%s", clnt->trans_mod->name);
@ -139,7 +141,7 @@ static int parse_opts(char *opts, struct p9_client *clnt)
int ret = 0;
clnt->proto_version = p9_proto_2000L;
clnt->msize = 8192;
clnt->msize = DEFAULT_MSIZE;
if (!opts)
return 0;

View File

@ -34,7 +34,7 @@
#include <linux/syscalls.h> /* killme */
#define P9_PORT 564
#define MAX_SOCK_BUF (64*1024)
#define MAX_SOCK_BUF (1024*1024)
#define MAXPOLLWADDR 2
static struct p9_trans_module p9_tcp_trans;

View File

@ -610,7 +610,7 @@ static int p9_virtio_probe(struct virtio_device *vdev)
chan->vc_wq = kmalloc(sizeof(wait_queue_head_t), GFP_KERNEL);
if (!chan->vc_wq) {
err = -ENOMEM;
goto out_free_tag;
goto out_remove_file;
}
init_waitqueue_head(chan->vc_wq);
chan->ring_bufs_avail = 1;
@ -628,6 +628,8 @@ static int p9_virtio_probe(struct virtio_device *vdev)
return 0;
out_remove_file:
sysfs_remove_file(&vdev->dev.kobj, &dev_attr_mount_tag.attr);
out_free_tag:
kfree(tag);
out_free_vq:

View File

@ -138,7 +138,7 @@ static bool p9_xen_write_todo(struct xen_9pfs_dataring *ring, RING_IDX size)
static int p9_xen_request(struct p9_client *client, struct p9_req_t *p9_req)
{
struct xen_9pfs_front_priv *priv = NULL;
struct xen_9pfs_front_priv *priv;
RING_IDX cons, prod, masked_cons, masked_prod;
unsigned long flags;
u32 size = p9_req->tc.size;
@ -151,7 +151,7 @@ static int p9_xen_request(struct p9_client *client, struct p9_req_t *p9_req)
break;
}
read_unlock(&xen_9pfs_lock);
if (!priv || priv->client != client)
if (list_entry_is_head(priv, &xen_9pfs_devs, list))
return -EINVAL;
num = p9_req->tc.tag % priv->num_rings;