eventpoll: drop vestigial __ prefix from ep_remove_{file,epi}()

mainline inclusion
from mainline-v7.1-rc1
category: bugfix
CVE: CVE-2026-46242

With __ep_remove() gone, the double-underscore on __ep_remove_file()
and __ep_remove_epi() no longer contrasts with a __-less parent and
just reads as noise. Rename both to ep_remove_file() and
ep_remove_epi(). No functional change.

Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
(cherry picked from commit 0feaf644f7180c4a91b6b405a881afbfd958f1cf)
Signed-off-by: Wentao Guan <guanwentao@uniontech.com>

Author: brauner

fs/eventpoll.c

@@ -718,7 +718,7 @@ static void ep_free(struct eventpoll *ep)
  * Called with &file->f_lock held,
  * returns with it released
  */
-static void __ep_remove_file(struct eventpoll *ep, struct epitem *epi,
+static void ep_remove_file(struct eventpoll *ep, struct epitem *epi,
 			     struct file *file)
 {
 	struct epitems_head *to_free = NULL;
@@ -742,7 +742,7 @@ static void __ep_remove_file(struct eventpoll *ep, struct epitem *epi,
 	free_ephead(to_free);
 }
 
-static bool __ep_remove_epi(struct eventpoll *ep, struct epitem *epi)
+static bool ep_remove_epi(struct eventpoll *ep, struct epitem *epi)
 {
 	lockdep_assert_held(&ep->mtx);
 
@@ -788,9 +788,9 @@ static void ep_remove_safe(struct eventpoll *ep, struct epitem *epi)
 		spin_unlock(&file->f_lock);
 		return;
 	}
-	__ep_remove_file(ep, epi, file);
+	ep_remove_file(ep, epi, file);
 
-	if (__ep_remove_epi(ep, epi))
+	if (ep_remove_epi(ep, epi))
 		WARN_ON_ONCE(ep_refcount_dec_and_test(ep));
 }
 
@@ -1012,8 +1012,8 @@ void eventpoll_release_file(struct file *file)
 		ep_unregister_pollwait(ep, epi);
 
 		spin_lock(&file->f_lock);
-		__ep_remove_file(ep, epi, file);
-		dispose = __ep_remove_epi(ep, epi);
+		ep_remove_file(ep, epi, file);
+		dispose = ep_remove_epi(ep, epi);
 
 		mutex_unlock(&ep->mtx);