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NFS client bugfixes for Linux 3.9

Browse source 
- Don't allow NFS silly-renamed files to be deleted
 - Don't start the retransmission timer when out of socket space
 - Fix a couple of pnfs-related Oopses.
 - Fix one more NFSv4 state recovery deadlock
 - Don't loop forever when LAYOUTGET returns NFS4ERR_LAYOUTTRYLATER
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Merge tag 'nfs-for-3.9-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client bugfixes from Trond Myklebust:
 "We've just concluded another Connectathon interoperability testing
  week, and so here are the fixes for the bugs that were discovered:

   - Don't allow NFS silly-renamed files to be deleted
   - Don't start the retransmission timer when out of socket space
   - Fix a couple of pnfs-related Oopses.
   - Fix one more NFSv4 state recovery deadlock
   - Don't loop forever when LAYOUTGET returns NFS4ERR_LAYOUTTRYLATER"

* tag 'nfs-for-3.9-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  SUNRPC: One line comment fix
  NFSv4.1: LAYOUTGET EDELAY loops timeout to the MDS
  SUNRPC: add call to get configured timeout
  PNFS: set the default DS timeout to 60 seconds
  NFSv4: Fix another open/open_recovery deadlock
  nfs: don't allow nfs_find_actor to match inodes of the wrong type
  NFSv4.1: Hold reference to layout hdr in layoutget
  pnfs: fix resend_to_mds for directio
  SUNRPC: Don't start the retransmission timer when out of socket space
  NFS: Don't allow NFS silly-renamed files to be deleted, no signal
This commit is contained in:
Linus Torvalds 2013-03-02 16:46:07 -08:00
commit 8d05b3771d
11 changed files with 77 additions and 24 deletions
Download patch file Download diff file Expand all files Collapse all files

15
net/sunrpc/clnt.c
View file

@ -1196,6 +1196,21 @@ size_t rpc_max_payload(struct rpc_clnt *clnt)
}
EXPORT_SYMBOL_GPL(rpc_max_payload);
/**
* rpc_get_timeout - Get timeout for transport in units of HZ
* @clnt: RPC client to query
*/
unsigned long rpc_get_timeout(struct rpc_clnt *clnt)
{
unsigned long ret;
rcu_read_lock();
ret = rcu_dereference(clnt->cl_xprt)->timeout->to_initval;
rcu_read_unlock();
return ret;
}
EXPORT_SYMBOL_GPL(rpc_get_timeout);
/**
* rpc_force_rebind - force transport to check that remote port is unchanged
* @clnt: client to rebind

6
net/sunrpc/xprt.c
View file

@ -487,13 +487,17 @@ EXPORT_SYMBOL_GPL(xprt_wake_pending_tasks);
* xprt_wait_for_buffer_space - wait for transport output buffer to clear
* @task: task to be put to sleep
* @action: function pointer to be executed after wait
*
* Note that we only set the timer for the case of RPC_IS_SOFT(), since
* we don't in general want to force a socket disconnection due to
* an incomplete RPC call transmission.
*/
void xprt_wait_for_buffer_space(struct rpc_task *task, rpc_action action)
{
struct rpc_rqst *req = task->tk_rqstp;
struct rpc_xprt *xprt = req->rq_xprt;
task->tk_timeout = req->rq_timeout;
task->tk_timeout = RPC_IS_SOFT(task) ? req->rq_timeout : 0;
rpc_sleep_on(&xprt->pending, task, action);
}
EXPORT_SYMBOL_GPL(xprt_wait_for_buffer_space);