From: Alexey Dobriyan <adobriyan@gmail.com>
To: akpm@linux-foundation.org
Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org
Subject: [PATCH] proc: use __auto_type more
Date: Sun, 8 Sep 2024 12:26:22 +0300 [thread overview]
Message-ID: <81bf02fd-8724-4f4d-a2bb-c59620b7d716@p183> (raw)
Switch away from quite chatty declarations using typeof_member().
In theory this is faster to compile too because there is no macro
expansion and there is less type checking.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
---
fs/proc/inode.c | 31 ++++++++-----------------------
1 file changed, 8 insertions(+), 23 deletions(-)
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -303,9 +303,7 @@ static ssize_t proc_reg_read_iter(struct kiocb *iocb, struct iov_iter *iter)
static ssize_t pde_read(struct proc_dir_entry *pde, struct file *file, char __user *buf, size_t count, loff_t *ppos)
{
- typeof_member(struct proc_ops, proc_read) read;
-
- read = pde->proc_ops->proc_read;
+ __auto_type read = pde->proc_ops->proc_read;
if (read)
return read(file, buf, count, ppos);
return -EIO;
@@ -327,9 +325,7 @@ static ssize_t proc_reg_read(struct file *file, char __user *buf, size_t count,
static ssize_t pde_write(struct proc_dir_entry *pde, struct file *file, const char __user *buf, size_t count, loff_t *ppos)
{
- typeof_member(struct proc_ops, proc_write) write;
-
- write = pde->proc_ops->proc_write;
+ __auto_type write = pde->proc_ops->proc_write;
if (write)
return write(file, buf, count, ppos);
return -EIO;
@@ -351,9 +347,7 @@ static ssize_t proc_reg_write(struct file *file, const char __user *buf, size_t
static __poll_t pde_poll(struct proc_dir_entry *pde, struct file *file, struct poll_table_struct *pts)
{
- typeof_member(struct proc_ops, proc_poll) poll;
-
- poll = pde->proc_ops->proc_poll;
+ __auto_type poll = pde->proc_ops->proc_poll;
if (poll)
return poll(file, pts);
return DEFAULT_POLLMASK;
@@ -375,9 +369,7 @@ static __poll_t proc_reg_poll(struct file *file, struct poll_table_struct *pts)
static long pde_ioctl(struct proc_dir_entry *pde, struct file *file, unsigned int cmd, unsigned long arg)
{
- typeof_member(struct proc_ops, proc_ioctl) ioctl;
-
- ioctl = pde->proc_ops->proc_ioctl;
+ __auto_type ioctl = pde->proc_ops->proc_ioctl;
if (ioctl)
return ioctl(file, cmd, arg);
return -ENOTTY;
@@ -400,9 +392,7 @@ static long proc_reg_unlocked_ioctl(struct file *file, unsigned int cmd, unsigne
#ifdef CONFIG_COMPAT
static long pde_compat_ioctl(struct proc_dir_entry *pde, struct file *file, unsigned int cmd, unsigned long arg)
{
- typeof_member(struct proc_ops, proc_compat_ioctl) compat_ioctl;
-
- compat_ioctl = pde->proc_ops->proc_compat_ioctl;
+ __auto_type compat_ioctl = pde->proc_ops->proc_compat_ioctl;
if (compat_ioctl)
return compat_ioctl(file, cmd, arg);
return -ENOTTY;
@@ -424,9 +414,7 @@ static long proc_reg_compat_ioctl(struct file *file, unsigned int cmd, unsigned
static int pde_mmap(struct proc_dir_entry *pde, struct file *file, struct vm_area_struct *vma)
{
- typeof_member(struct proc_ops, proc_mmap) mmap;
-
- mmap = pde->proc_ops->proc_mmap;
+ __auto_type mmap = pde->proc_ops->proc_mmap;
if (mmap)
return mmap(file, vma);
return -EIO;
@@ -483,7 +471,6 @@ static int proc_reg_open(struct inode *inode, struct file *file)
struct proc_dir_entry *pde = PDE(inode);
int rv = 0;
typeof_member(struct proc_ops, proc_open) open;
- typeof_member(struct proc_ops, proc_release) release;
struct pde_opener *pdeo;
if (!pde->proc_ops->proc_lseek)
@@ -510,7 +497,7 @@ static int proc_reg_open(struct inode *inode, struct file *file)
if (!use_pde(pde))
return -ENOENT;
- release = pde->proc_ops->proc_release;
+ __auto_type release = pde->proc_ops->proc_release;
if (release) {
pdeo = kmem_cache_alloc(pde_opener_cache, GFP_KERNEL);
if (!pdeo) {
@@ -547,9 +534,7 @@ static int proc_reg_release(struct inode *inode, struct file *file)
struct pde_opener *pdeo;
if (pde_is_permanent(pde)) {
- typeof_member(struct proc_ops, proc_release) release;
-
- release = pde->proc_ops->proc_release;
+ __auto_type release = pde->proc_ops->proc_release;
if (release) {
return release(inode, file);
}
reply other threads:[~2024-09-08 9:26 UTC|newest]
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