From: Trond Myklebust trond.myklebust@hammerspace.com
mainline inclusion from mainline-v5.7-rc1 commit 244fcd2f9a904523f1b8c1a6c94749e230ac053a category: bugfix bugzilla: NA CVE: NA
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We can't allow delegreturn to hold up nfs4_evict_inode() forever, since that can cause the memory shrinkers to block. This patch therefore ensures that we eventually time out, and complete the reclaim of the inode.
Signed-off-by: Trond Myklebust trond.myklebust@hammerspace.com Signed-off-by: Zhang Xiaoxu zhangxiaoxu5@huawei.com Reviewed-by: Zhang Yi yi.zhang@huawei.com Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- fs/nfs/nfs4proc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 926a75d6a4ed6..e30df289e9610 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -6133,6 +6133,7 @@ static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) /* Fallthrough */ case -NFS4ERR_BAD_STATEID: case -NFS4ERR_STALE_STATEID: + case -ETIMEDOUT: task->tk_status = 0; break; case -NFS4ERR_OLD_STATEID: @@ -6221,7 +6222,7 @@ static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, co .rpc_client = server->client, .rpc_message = &msg, .callback_ops = &nfs4_delegreturn_ops, - .flags = RPC_TASK_ASYNC, + .flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT, }; int status = 0;