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authorTrond Myklebust <trondmy@gmail.com>2019-04-07 13:58:44 -0400
committerAnna Schumaker <Anna.Schumaker@Netapp.com>2019-04-25 14:18:12 -0400
commitae67bd3821bb0a54d97e7883d211196637d487a9 (patch)
tree351a54fd10a71f6c76d5e8d8a8ce323c9252192e /fs/lockd
parent085b7755808aa11f78ab9377257e1dad2e6fa4bb (diff)
downloadlinux-ae67bd3821bb0a54d97e7883d211196637d487a9.tar.gz
SUNRPC: Fix up task signalling
The RPC_TASK_KILLED flag should really not be set from another context because it can clobber data in the struct task when task->tk_flags is changed non-atomically. Let's therefore swap out RPC_TASK_KILLED with an atomic flag, and add a function to set that flag and safely wake up the task. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'fs/lockd')
-rw-r--r--fs/lockd/clntproc.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/lockd/clntproc.c b/fs/lockd/clntproc.c
index e8a004097d18..d9c32d1a20c0 100644
--- a/fs/lockd/clntproc.c
+++ b/fs/lockd/clntproc.c
@@ -715,7 +715,7 @@ static void nlmclnt_unlock_callback(struct rpc_task *task, void *data)
struct nlm_rqst *req = data;
u32 status = ntohl(req->a_res.status);
- if (RPC_ASSASSINATED(task))
+ if (RPC_SIGNALLED(task))
goto die;
if (task->tk_status < 0) {
@@ -783,7 +783,7 @@ static void nlmclnt_cancel_callback(struct rpc_task *task, void *data)
struct nlm_rqst *req = data;
u32 status = ntohl(req->a_res.status);
- if (RPC_ASSASSINATED(task))
+ if (RPC_SIGNALLED(task))
goto die;
if (task->tk_status < 0) {