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| author | Benjamin Coddington <bcodding@redhat.com> | 2021-03-03 16:47:16 +0300 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2021-03-08 23:32:16 +0300 |
| commit | f0940f4b3284a00f38a5d42e6067c2aaa20e1f2e (patch) | |
| tree | 450cd1a22f847863159bec811c5f99854310235b | |
| parent | ad3dbe35c833c2d4d0bbf3f04c785d32f931e7c9 (diff) | |
| download | linux-f0940f4b3284a00f38a5d42e6067c2aaa20e1f2e.tar.xz | |
SUNRPC: Set memalloc_nofs_save() for sync tasks
We could recurse into NFS doing memory reclaim while sending a sync task,
which might result in a deadlock. Set memalloc_nofs_save for sync task
execution.
Fixes: a1231fda7e94 ("SUNRPC: Set memalloc_nofs_save() on all rpciod/xprtiod jobs")
Signed-off-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
| -rw-r--r-- | net/sunrpc/sched.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c index cf702a5f7fe5..39ed0e0afe6d 100644 --- a/net/sunrpc/sched.c +++ b/net/sunrpc/sched.c @@ -963,8 +963,11 @@ void rpc_execute(struct rpc_task *task) rpc_set_active(task); rpc_make_runnable(rpciod_workqueue, task); - if (!is_async) + if (!is_async) { + unsigned int pflags = memalloc_nofs_save(); __rpc_execute(task); + memalloc_nofs_restore(pflags); + } } static void rpc_async_schedule(struct work_struct *work) |