[PATCH -next] Documentation: futex: handle source file rename

[Randy Dunlap]

Handle the move/rename of kernel/futex.c to kernel/futex/core.c.

Prevents docs build errors and warnings:

Error: Cannot open file ../kernel/futex.c
Error: Cannot open file ../kernel/futex.c
Error: Cannot open file ../kernel/futex.c
Error: Cannot open file ../kernel/futex.c
WARNING: kernel-doc '../scripts/kernel-doc -rst -enable-lineno -sphinx-version 1.8.5 -internal ../kernel/futex.c' failed with return code 2
WARNING: kernel-doc '../scripts/kernel-doc -rst -enable-lineno -sphinx-version 1.8.5 -internal ../kernel/futex.c' failed with return code 2

Fixes: 77e52ae35463 ("futex: Move to kernel/futex/")
Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Darren Hart <dvhart@xxxxxxxxxxxxx>
Cc: Davidlohr Bueso <dave@xxxxxxxxxxxx>
Cc: André Almeida <andrealmeid@xxxxxxxxxxxxx>
Cc: linux-doc@xxxxxxxxxxxxxxx
Cc: Jonathan Corbet <corbet@xxxxxxx>
---
 Documentation/kernel-hacking/locking.rst                    |    2 +-
 Documentation/translations/it_IT/kernel-hacking/locking.rst |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

--- linux-next-20211018.orig/Documentation/kernel-hacking/locking.rst
+++ linux-next-20211018/Documentation/kernel-hacking/locking.rst
@@ -1352,7 +1352,7 @@ Mutex API reference
 Futex API reference
 ===================
 
-.. kernel-doc:: kernel/futex.c
+.. kernel-doc:: kernel/futex/core.c
    :internal:
 
 Further reading
--- linux-next-20211018.orig/Documentation/translations/it_IT/kernel-hacking/locking.rst
+++ linux-next-20211018/Documentation/translations/it_IT/kernel-hacking/locking.rst
@@ -1396,7 +1396,7 @@ Riferimento per l'API dei Mutex
 Riferimento per l'API dei Futex
 ===============================
 
-.. kernel-doc:: kernel/futex.c
+.. kernel-doc:: kernel/futex/core.c
    :internal:
 
 Approfondimenti