From: Xie Yongji <xieyongji@bytedance.com>
Date: Tue, 31 Aug 2021 10:36:23 +0000 (+0800)
Subject: eventfd: Export eventfd_wake_count to modules
X-Git-Tag: v5.15-rc1~12^2~11
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=7a6b92d33ab166c6ea6e5764033ca99dcb6ec361;p=thirdparty%2Flinux.git

eventfd: Export eventfd_wake_count to modules

Export eventfd_wake_count so that some modules can use
the eventfd_signal_count() to check whether the
eventfd_signal() call should be deferred to a safe context.

NB(mst): this patch is not needed in Linus tree since there
eventfd_signal_count() has been superseded by an already exported
eventfd_signal_allowed().

Signed-off-by: Xie Yongji <xieyongji@bytedance.com>
Link: https://lore.kernel.org/r/20210831103634.33-3-xieyongji@bytedance.com
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---

diff --git a/fs/eventfd.c b/fs/eventfd.c
index e265b6dd4f345..1b3130b8d6c14 100644
--- a/fs/eventfd.c
+++ b/fs/eventfd.c
@@ -26,6 +26,7 @@
 #include <linux/uio.h>
 
 DEFINE_PER_CPU(int, eventfd_wake_count);
+EXPORT_PER_CPU_SYMBOL_GPL(eventfd_wake_count);
 
 static DEFINE_IDA(eventfd_ida);