[patch V4 12/12] select: Convert to scoped user access

Thomas Gleixner
2025-10-22T12:49:19Z

From: Thomas Gleixner <tglx@linutronix.de>

Replace the open coded implementation with the scoped user access guard.

No functional change intended.

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
---
V4: Use read guard - Peterz
Rename once more
V3: Adopt to scope changes
---
fs/select.c | 12 ++++--------
1 file changed, 4 insertions(+), 8 deletions(-)
---
--- a/fs/select.c
+++ b/fs/select.c
@@ -776,17 +776,13 @@ 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)))
- return -EFAULT;
- unsafe_get_user(to->p, &from->p, Efault);
- unsafe_get_user(to->size, &from->size, Efault);
- user_read_access_end();
+ scoped_user_read_access(from, Efault) {
+ unsafe_get_user(to->p, &from->p, Efault);
+ unsafe_get_user(to->size, &from->size, Efault);
+ }
}
return 0;
Efault:
- user_read_access_end();
return -EFAULT;
}