From: Alexey Dobriyan <adobriyan@gmail.com>
To: akpm@linux-foundation.org, viro@zeniv.linux.org.uk
Cc: linux-kernel@vger.kernel.org
Subject: [PATCH 2/2] proc: unsigned file descriptors
Date: Fri, 2 Sep 2016 00:42:02 +0300 [thread overview]
Message-ID: <20160901214202.GB7453@p183.telecom.by> (raw)
In-Reply-To: <20160901213852.GA7453@p183.telecom.by>
Make struct proc_inode::fd unsigned.
This allows better code generation on x86_64 (less sign extensions).
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
---
fs/proc/fd.c | 8 ++++----
fs/proc/fd.h | 2 +-
fs/proc/internal.h | 2 +-
3 files changed, 6 insertions(+), 6 deletions(-)
--- a/fs/proc/fd.c
+++ b/fs/proc/fd.c
@@ -31,7 +31,7 @@ static int seq_show(struct seq_file *m, void *v)
put_task_struct(task);
if (files) {
- int fd = proc_fd(m->private);
+ unsigned int fd = proc_fd(m->private);
spin_lock(&files->file_lock);
file = fcheck_files(files, fd);
@@ -86,7 +86,7 @@ static int tid_fd_revalidate(struct dentry *dentry, unsigned int flags)
struct task_struct *task;
const struct cred *cred;
struct inode *inode;
- int fd;
+ unsigned int fd;
if (flags & LOOKUP_RCU)
return -ECHILD;
@@ -158,7 +158,7 @@ static int proc_fd_link(struct dentry *dentry, struct path *path)
}
if (files) {
- int fd = proc_fd(d_inode(dentry));
+ unsigned int fd = proc_fd(d_inode(dentry));
struct file *fd_file;
spin_lock(&files->file_lock);
@@ -253,7 +253,7 @@ static int proc_readfd_common(struct file *file, struct dir_context *ctx,
continue;
rcu_read_unlock();
- len = snprintf(name, sizeof(name), "%d", fd);
+ len = snprintf(name, sizeof(name), "%u", fd);
if (!proc_fill_cache(file, ctx,
name, len, instantiate, p,
(void *)(unsigned long)fd))
--- a/fs/proc/fd.h
+++ b/fs/proc/fd.h
@@ -11,7 +11,7 @@ extern const struct inode_operations proc_fdinfo_inode_operations;
extern int proc_fd_permission(struct inode *inode, int mask);
-static inline int proc_fd(struct inode *inode)
+static inline unsigned int proc_fd(struct inode *inode)
{
return PROC_I(inode)->fd;
}
--- a/fs/proc/internal.h
+++ b/fs/proc/internal.h
@@ -60,7 +60,7 @@ union proc_op {
struct proc_inode {
struct pid *pid;
- int fd;
+ unsigned int fd;
union proc_op op;
struct proc_dir_entry *pde;
struct ctl_table_header *sysctl;
prev parent reply other threads:[~2016-09-01 21:42 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-01 21:38 [PATCH 1/2] fs/file: more unsigned file descriptors Alexey Dobriyan
2016-09-01 21:42 ` Alexey Dobriyan [this message]
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