From: Thomas Gleixner <tglx@linutronix.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: "Linus Torvalds" <torvalds@linux-foundation.org>,
"Mathieu Desnoyers" <mathieu.desnoyers@efficios.com>,
"Alexander Viro" <viro@zeniv.linux.org.uk>,
"Christian Brauner" <brauner@kernel.org>,
"Jan Kara" <jack@suse.cz>,
linux-fsdevel@vger.kernel.org,
"Peter Zijlstra" <peterz@infradead.org>,
"Darren Hart" <dvhart@infradead.org>,
"Davidlohr Bueso" <dave@stgolabs.net>,
"André Almeida" <andrealmeid@igalia.com>,
x86@kernel.org
Subject: [patch 4/4] select: Use user_read_masked_begin()
Date: Wed, 13 Aug 2025 17:57:09 +0200 (CEST) [thread overview]
Message-ID: <20250813151939.792908766@linutronix.de> (raw)
In-Reply-To: 20250813150610.521355442@linutronix.de
Replace the can_do_masked_user_access() conditional with the generic macro.
No functional change.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Jan Kara <jack@suse.cz>
Cc: linux-fsdevel@vger.kernel.org
---
fs/select.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
--- a/fs/select.c
+++ b/fs/select.c
@@ -776,9 +776,7 @@ static inline int get_sigset_argpack(str
{
// the path is hot enough for overhead of copy_from_user() to matter
if (from) {
- if (can_do_masked_user_access())
- from = masked_user_access_begin(from);
- else if (!user_read_access_begin(from, sizeof(*from)))
+ if (!user_read_masked_begin(from))
return -EFAULT;
unsafe_get_user(to->p, &from->p, Efault);
unsafe_get_user(to->size, &from->size, Efault);
next prev parent reply other threads:[~2025-08-13 16:06 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-13 15:57 [patch 0/4] uaccess: Provide and use helpers for user masked access Thomas Gleixner
2025-08-13 15:57 ` [patch 1/4] uaccess: Provide common helpers for masked user access Thomas Gleixner
2025-08-26 7:04 ` Christophe Leroy
2025-08-13 15:57 ` [patch 2/4] futex: Convert to get/put_user_masked_u32() Thomas Gleixner
2025-08-13 15:57 ` [patch 3/4] x86/futex: Use user_*_masked_begin() Thomas Gleixner
2025-08-26 7:09 ` Christophe Leroy
2025-08-13 15:57 ` Thomas Gleixner [this message]
2025-08-17 13:49 ` [patch 0/4] uaccess: Provide and use helpers for user masked access David Laight
2025-08-17 14:00 ` Linus Torvalds
2025-08-17 15:29 ` David Laight
2025-08-17 15:36 ` Linus Torvalds
2025-08-18 11:59 ` David Laight
2025-08-18 21:21 ` David Laight
2025-08-18 21:36 ` Linus Torvalds
2025-08-18 22:21 ` Al Viro
2025-08-18 23:00 ` Linus Torvalds
2025-08-19 0:39 ` Al Viro
2025-08-20 23:48 ` Al Viro
2025-08-21 7:45 ` Christian Brauner
2025-08-21 22:49 ` Al Viro
2025-08-19 2:39 ` Matthew Wilcox
2025-08-19 21:33 ` David Laight
2025-08-19 4:44 ` Thomas Weißschuh
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