[PATCH 1/7] docs: futex2: fix documented errno names for futex_waitv

["Iván Ezequiel Rodriguez" <ivanrwcm25@gmail.com>]

The documentation cited -EAGAIN and -ETIMEOUT, but futex_waitv()
returns -EWOULDBLOCK on value mismatch and -ETIMEDOUT when the
timeout expires, per kernel/futex/waitwake.c.

Signed-off-by: Iván Ezequiel Rodriguez <ivanrwcm25@gmail.com>
---
 Documentation/userspace-api/futex2.rst | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Documentation/userspace-api/futex2.rst b/Documentation/userspace-api/futex2.rst
index 9693f47a7e62..615616305c57 100644
--- a/Documentation/userspace-api/futex2.rst
+++ b/Documentation/userspace-api/futex2.rst
@@ -51,10 +51,10 @@ future extension.
 
 For each entry in ``waiters`` array, the current value at ``uaddr`` is compared
 to ``val``. If it's different, the syscall undo all the work done so far and
-return ``-EAGAIN``. If all tests and verifications succeeds, syscall waits until
+return ``-EWOULDBLOCK``. If all tests and verifications succeeds, syscall waits until
 one of the following happens:
 
-- The timeout expires, returning ``-ETIMEOUT``.
+- The timeout expires, returning ``-ETIMEDOUT``.
 - A signal was sent to the sleeping task, returning ``-ERESTARTSYS``.
 - Some futex at the list was woken, returning the index of some waked futex.
 
-- 
2.43.0