On Thu, 17 Sep 2026 11:09:43 +0200 Christian Brauner <[email protected]> wrote:
> The whole CLASS_INIT() detour isn't needed. Use __cleanup() directly and > give the destructor a private name. It also makes the code enormously easier to read. David > > No functional changes. > > Signed-off-by: Christian Brauner (Amutable) <[email protected]> > --- > include/linux/file.h | 9 +++------ > 1 file changed, 3 insertions(+), 6 deletions(-) > > diff --git a/include/linux/file.h b/include/linux/file.h > index 2b864f457211..926cc58d0b7f 100644 > --- a/include/linux/file.h > +++ b/include/linux/file.h > @@ -146,9 +146,6 @@ struct fd_prepare { > struct file *__file; /* do not access directly */ > }; > > -/* Typedef for fd_prepare cleanup guards. */ > -typedef struct fd_prepare class_fd_prepare_t; > - > /* > * Accessors for fd_prepare class members. > * _Generic() is used for zero-cost type safety. > @@ -160,7 +157,7 @@ typedef struct fd_prepare class_fd_prepare_t; > (_Generic((_fdf), struct fd_prepare: (_fdf).__file)) > > /* Do not use directly. */ > -static __always_inline void class_fd_prepare_destructor(const struct > fd_prepare *fdf) > +static __always_inline void __fd_prepare_cleanup(const struct fd_prepare > *fdf) > { > if (unlikely(fdf->__fd >= 0)) { > put_unused_fd(fdf->__fd); > @@ -199,10 +196,10 @@ static __always_inline struct fd_prepare > __fd_prepare(int fd, struct file *file) > * @_file_owned: struct file to take ownership of (can be expression) > */ > #define FD_PREPARE(_fdf, _fd_flags, _file_owned) \ > - CLASS_INIT(fd_prepare, _fdf, ({ \ > + struct fd_prepare _fdf __cleanup(__fd_prepare_cleanup) = ({ \ > int __fd = get_unused_fd_flags(_fd_flags); \ > __fd_prepare(__fd, __fd < 0 ? NULL : (_file_owned)); \ > - })) > + }) > > /* Do not use directly. */ > static __always_inline int __fd_publish(struct fd_prepare *fdf) >
