patch-2.3.51 linux/fs/devpts/inode.c

• Lines: 137
• Date: Fri Mar 10 13:41:50 2000
• Orig file: v2.3.50/linux/fs/devpts/inode.c
• Orig date: Sat Feb 26 22:31:52 2000

diff -u --recursive --new-file v2.3.50/linux/fs/devpts/inode.c linux/fs/devpts/inode.c
@@ -51,19 +51,13 @@
 
 	kfree(sbi->inodes);
 	kfree(sbi);
-
-#ifdef MODULE
-	MOD_DEC_USE_COUNT;
-#endif
 }
 
-static int devpts_statfs(struct super_block *sb, struct statfs *buf, int bufsiz);
+static int devpts_statfs(struct super_block *sb, struct statfs *buf);
 static void devpts_read_inode(struct inode *inode);
-static void devpts_write_inode(struct inode *inode);
 
 static struct super_operations devpts_sops = {
 	read_inode:	devpts_read_inode,
-	write_inode:	devpts_write_inode,
 	put_super:	devpts_put_super,
 	statfs:		devpts_statfs,
 };
@@ -125,9 +119,6 @@
 	struct dentry * root;
 	struct devpts_sb_info *sbi;
 
-	MOD_INC_USE_COUNT;
-
-	lock_super(s);
 	/* Super block already completed? */
 	if (s->s_root)
 		goto out_unlock;
@@ -151,7 +142,6 @@
 	s->s_magic = DEVPTS_SUPER_MAGIC;
 	s->s_op = &devpts_sops;
 	s->s_root = NULL;
-	unlock_super(s); /* shouldn't we keep it locked a while longer? */
 
 	/*
 	 * Get the root inode and dentry, but defer checking for errors.
@@ -183,7 +173,6 @@
 	/*
 	 * Success! Install the root dentry now to indicate completion.
 	 */
-	lock_super(s);
 	s->s_root = root;
 
 	sbi->next = mounts;
@@ -192,14 +181,12 @@
 	sbi->back = &mounts;
 	mounts = s;
 
-	unlock_super(s);
 	return s;
 
 	/*
 	 * Success ... somebody else completed the super block for us. 
 	 */ 
 out_unlock:
-	unlock_super(s);
 	goto out_dec;
 out_dput:
 	if (root)
@@ -207,7 +194,6 @@
 	else
 		iput(root_inode);
 out_dec:
-	MOD_DEC_USE_COUNT;
 	return s;
 	
 	/*
@@ -217,7 +203,6 @@
 	/*
 	 * dput() can block, so we clear the super block first.
 	 */
-	s->s_dev = 0;
 	dput(root);
 	goto fail_free;
 fail_iput:
@@ -225,32 +210,22 @@
 	/*
 	 * iput() can block, so we clear the super block first.
 	 */
-	s->s_dev = 0;
 	iput(root_inode);
 fail_free:
 	kfree(sbi);
-	goto fail_dec;
 fail_unlock:
-	unlock_super(s);
-fail_dec:
-	s->s_dev = 0;
-	MOD_DEC_USE_COUNT;
 	return NULL;
 }
 
-static int devpts_statfs(struct super_block *sb, struct statfs *buf, int bufsiz)
+static int devpts_statfs(struct super_block *sb, struct statfs *buf)
 {
-	struct statfs tmp;
-
-	tmp.f_type = DEVPTS_SUPER_MAGIC;
-	tmp.f_bsize = 1024;
-	tmp.f_blocks = 0;
-	tmp.f_bfree = 0;
-	tmp.f_bavail = 0;
-	tmp.f_files = 0;
-	tmp.f_ffree = 0;
-	tmp.f_namelen = NAME_MAX;
-	return copy_to_user(buf, &tmp, bufsiz) ? -EFAULT : 0;
+	buf->f_type = DEVPTS_SUPER_MAGIC;
+	buf->f_bsize = 1024;
+	buf->f_bfree = 0;
+	buf->f_bavail = 0;
+	buf->f_ffree = 0;
+	buf->f_namelen = NAME_MAX;
+	return 0;
 }
 
 static void devpts_read_inode(struct inode *inode)
@@ -284,16 +259,7 @@
 	return;
 }
 
-static void devpts_write_inode(struct inode *inode)
-{
-}
-
-static struct file_system_type devpts_fs_type = {
-	"devpts",
-	0,
-	devpts_read_super,
-	NULL
-};
+static DECLARE_FSTYPE(devpts_fs_type, "devpts", devpts_read_super, 0);
 
 void devpts_pty_new(int number, kdev_t device)
 {