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| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2012-01-17 22:57:37 -0500 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2012-01-31 19:28:08 -0500 |
| commit | 961a828df64979d2a9faeeeee043391670a193b9 (patch) | |
| tree | 4b7ddaf1a19c589e3c8ec96b6c732faa507f2899 /include/linux/sunrpc | |
| parent | 2aeb98f498ce37742b743080fdc6c8cf64053599 (diff) | |
| download | linux-stable-961a828df64979d2a9faeeeee043391670a193b9.tar.gz linux-stable-961a828df64979d2a9faeeeee043391670a193b9.tar.bz2 linux-stable-961a828df64979d2a9faeeeee043391670a193b9.zip | |
SUNRPC: Fix potential races in xprt_lock_write_next()
We have to ensure that the wake up from the waitqueue and the assignment
of xprt->snd_task are atomic. We can do this by assigning the snd_task
while under the waitqueue spinlock.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'include/linux/sunrpc')
| -rw-r--r-- | include/linux/sunrpc/sched.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/sunrpc/sched.h b/include/linux/sunrpc/sched.h index b16243a35f0b..bd337f990a41 100644 --- a/include/linux/sunrpc/sched.h +++ b/include/linux/sunrpc/sched.h @@ -235,6 +235,9 @@ void rpc_wake_up_queued_task(struct rpc_wait_queue *, struct rpc_task *); void rpc_wake_up(struct rpc_wait_queue *); struct rpc_task *rpc_wake_up_next(struct rpc_wait_queue *); +struct rpc_task *rpc_wake_up_first(struct rpc_wait_queue *, + bool (*)(struct rpc_task *, void *), + void *); void rpc_wake_up_status(struct rpc_wait_queue *, int); int rpc_queue_empty(struct rpc_wait_queue *); void rpc_delay(struct rpc_task *, unsigned long); |