diff options
| author | Stanislav Kinsbursky | 2012-03-11 15:20:23 +0100 |
|---|---|---|
| committer | Trond Myklebust | 2012-03-11 15:57:34 +0100 |
| commit | cb9c1c4a880bc734c2848f8647be2cfa336ee346 (patch) | |
| tree | 84006417e491ba57da87a88212c5c9dda3fd4e96 /fs/nfs/blocklayout/blocklayoutdev.c | |
| parent | NFS: remove nfs_inode radix tree (diff) | |
| download | kernel-qcow2-linux-cb9c1c4a880bc734c2848f8647be2cfa336ee346.tar.gz kernel-qcow2-linux-cb9c1c4a880bc734c2848f8647be2cfa336ee346.tar.xz kernel-qcow2-linux-cb9c1c4a880bc734c2848f8647be2cfa336ee346.zip | |
NFS: replace global bl_mount_reply with per-net one
This global variable is used for blocklayout downcall and thus can be corrupted
if case of existence of multiple networks namespaces.
Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/blocklayout/blocklayoutdev.c')
| -rw-r--r-- | fs/nfs/blocklayout/blocklayoutdev.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/fs/nfs/blocklayout/blocklayoutdev.c b/fs/nfs/blocklayout/blocklayoutdev.c index b48f782a94ad..1d58642b1530 100644 --- a/fs/nfs/blocklayout/blocklayoutdev.c +++ b/fs/nfs/blocklayout/blocklayoutdev.c @@ -79,15 +79,16 @@ int nfs4_blkdev_put(struct block_device *bdev) return blkdev_put(bdev, FMODE_READ); } -static struct bl_dev_msg bl_mount_reply; - ssize_t bl_pipe_downcall(struct file *filp, const char __user *src, size_t mlen) { + struct nfs_net *nn = net_generic(filp->f_dentry->d_sb->s_fs_info, + nfs_net_id); + if (mlen != sizeof (struct bl_dev_msg)) return -EINVAL; - if (copy_from_user(&bl_mount_reply, src, mlen) != 0) + if (copy_from_user(&nn->bl_mount_reply, src, mlen) != 0) return -EFAULT; wake_up(&bl_wq); @@ -118,10 +119,10 @@ nfs4_blk_decode_device(struct nfs_server *server, }; uint8_t *dataptr; DECLARE_WAITQUEUE(wq, current); - struct bl_dev_msg *reply = &bl_mount_reply; int offset, len, i, rc; struct net *net = server->nfs_client->net; struct nfs_net *nn = net_generic(net, nfs_net_id); + struct bl_dev_msg *reply = &nn->bl_mount_reply; dprintk("%s CREATING PIPEFS MESSAGE\n", __func__); dprintk("%s: deviceid: %s, mincount: %d\n", __func__, dev->dev_id.data, |