From 771187d61bb3cbaf62c492ec3b8b789933f7691e Mon Sep 17 00:00:00 2001
From: Alexey Dobriyan <adobriyan@gmail.com>
Date: Fri, 2 Sep 2016 00:42:02 +0300
Subject: proc: unsigned file descriptors

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>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 fs/proc/fd.c       | 8 ++++----
 fs/proc/fd.h       | 2 +-
 fs/proc/internal.h | 2 +-
 3 files changed, 6 insertions(+), 6 deletions(-)

(limited to 'fs')

diff --git a/fs/proc/fd.c b/fs/proc/fd.c
index 01df23c..d21dafe 100644
--- 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))
diff --git a/fs/proc/fd.h b/fs/proc/fd.h
index 7c047f2..46dafad 100644
--- 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;
 }
diff --git a/fs/proc/internal.h b/fs/proc/internal.h
index 7931c55..5378441 100644
--- 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;
-- 
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