TononixOS/ubports_kernel_google_msm
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

pnfsblock: fix return code confusion

Browse Source 
Always return PTR_ERR, not NULL, from nfs4_blk_get_deviceinfo and
nfs4_blk_decode_device.

Check for IS_ERR, not NULL, in bl_set_layoutdriver when calling
nfs4_blk_get_deviceinfo.

Signed-off-by: Jim Rees <rees@umich.edu>
Signed-off-by: Benny Halevy <bhalevy@tonian.com>
Cc: stable@kernel.org [3.0]
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Jim Rees
2011-09-22 21:50:08 -04:00
committed by Trond Myklebust
parent 2da9565235
commit 516f2e24fa
2 changed files with 20 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
fs/nfs/blocklayout/blocklayoutdev.c
View File

@@ -131,7 +131,7 @@ struct pnfs_block_dev *
nfs4_blk_decode_device(struct nfs_server *server,
struct pnfs_device *dev)
{
struct pnfs_block_dev *rv = NULL;
struct pnfs_block_dev *rv;
struct block_device *bd = NULL;
struct rpc_pipe_msg msg;
struct bl_msg_hdr bl_msg = {
@@ -141,7 +141,7 @@ 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;
int offset, len, i, rc;
dprintk("%s CREATING PIPEFS MESSAGE\n", __func__);
dprintk("%s: deviceid: %s, mincount: %d\n", __func__, dev->dev_id.data,
@@ -168,8 +168,10 @@ nfs4_blk_decode_device(struct nfs_server *server,
dprintk("%s CALLING USERSPACE DAEMON\n", __func__);
add_wait_queue(&bl_wq, &wq);
if (rpc_queue_upcall(bl_device_pipe->d_inode, &msg) < 0) {
rc = rpc_queue_upcall(bl_device_pipe->d_inode, &msg);
if (rc < 0) {
remove_wait_queue(&bl_wq, &wq);
rv = ERR_PTR(rc);
goto out;
}
@@ -187,8 +189,9 @@ nfs4_blk_decode_device(struct nfs_server *server,
bd = nfs4_blkdev_get(MKDEV(reply->major, reply->minor));
if (IS_ERR(bd)) {
dprintk("%s failed to open device : %ld\n",
__func__, PTR_ERR(bd));
rc = PTR_ERR(bd);
dprintk("%s failed to open device : %d\n", __func__, rc);
rv = ERR_PTR(rc);
goto out;
}