Re: [PATCH] sanitize xfs_initialize_vnode

[Christoph Hellwig <hch@lst.de>]

ping^2

On Tue, May 20, 2008 at 08:36:22AM +0200, Christoph Hellwig wrote:
> ping?
> 
> On Fri, May 02, 2008 at 12:52:15PM +0200, Christoph Hellwig wrote:
> > Sanitize setting up the Linux indode.
> > 
> > Setting up the xfs_inode <-> inode link is opencoded in xfs_iget_core
> > now because that's the only place it needs to be done,
> > xfs_initialize_vnode is renamed to xfs_setup_inode and loses all
> > superflous paramaters.  The check for I_NEW is removed because it always
> > is true and the di_mode check moves into xfs_iget_core because it's only
> > needed there.
> > 
> > xfs_set_inodeops and xfs_revalidate_inode are merged into
> > xfs_setup_inode and the whole things is moved into xfs_iops.c where it
> > belongs.
> > 
> > 
> > Signed-off-by: Christoph Hellwig <hch@lst.de>
> > 
> > Index: linux-2.6-xfs/fs/xfs/linux-2.6/xfs_iops.c
> > ===================================================================
> > --- linux-2.6-xfs.orig/fs/xfs/linux-2.6/xfs_iops.c	2008-05-02 08:41:27.000000000 +0200
> > +++ linux-2.6-xfs/fs/xfs/linux-2.6/xfs_iops.c	2008-05-02 08:51:46.000000000 +0200
> > @@ -777,7 +777,7 @@ out_error:
> >  	return error;
> >  }
> >  
> > -const struct inode_operations xfs_inode_operations = {
> > +static const struct inode_operations xfs_inode_operations = {
> >  	.permission		= xfs_vn_permission,
> >  	.truncate		= xfs_vn_truncate,
> >  	.getattr		= xfs_vn_getattr,
> > @@ -789,7 +789,7 @@ const struct inode_operations xfs_inode_
> >  	.fallocate		= xfs_vn_fallocate,
> >  };
> >  
> > -const struct inode_operations xfs_dir_inode_operations = {
> > +static const struct inode_operations xfs_dir_inode_operations = {
> >  	.create			= xfs_vn_create,
> >  	.lookup			= xfs_vn_lookup,
> >  	.link			= xfs_vn_link,
> > @@ -808,7 +808,7 @@ const struct inode_operations xfs_dir_in
> >  	.listxattr		= xfs_vn_listxattr,
> >  };
> >  
> > -const struct inode_operations xfs_symlink_inode_operations = {
> > +static const struct inode_operations xfs_symlink_inode_operations = {
> >  	.readlink		= generic_readlink,
> >  	.follow_link		= xfs_vn_follow_link,
> >  	.put_link		= xfs_vn_put_link,
> > @@ -820,3 +820,95 @@ const struct inode_operations xfs_symlin
> >  	.removexattr		= generic_removexattr,
> >  	.listxattr		= xfs_vn_listxattr,
> >  };
> > +
> > +STATIC void
> > +xfs_diflags_to_iflags(
> > +	struct inode		*inode,
> > +	struct xfs_inode	*ip)
> > +{
> > +	if (ip->i_d.di_flags & XFS_DIFLAG_IMMUTABLE)
> > +		inode->i_flags |= S_IMMUTABLE;
> > +	else
> > +		inode->i_flags &= ~S_IMMUTABLE;
> > +	if (ip->i_d.di_flags & XFS_DIFLAG_APPEND)
> > +		inode->i_flags |= S_APPEND;
> > +	else
> > +		inode->i_flags &= ~S_APPEND;
> > +	if (ip->i_d.di_flags & XFS_DIFLAG_SYNC)
> > +		inode->i_flags |= S_SYNC;
> > +	else
> > +		inode->i_flags &= ~S_SYNC;
> > +	if (ip->i_d.di_flags & XFS_DIFLAG_NOATIME)
> > +		inode->i_flags |= S_NOATIME;
> > +	else
> > +		inode->i_flags &= ~S_NOATIME;
> > +}
> > +
> > +/*
> > + * Initialize the Linux inode, set up the operation vectors and
> > + * unlock the inode.
> > + *
> > + * When reading existing inodes from disk this is called directly
> > + * from xfs_iget, when creating a new inode it is called from
> > + * xfs_ialloc after setting up the inode.
> > + */
> > +void
> > +xfs_setup_inode(
> > +	struct xfs_inode	*ip)
> > +{
> > +	struct inode		*inode = ip->i_vnode;
> > +
> > +	inode->i_mode	= ip->i_d.di_mode;
> > +	inode->i_nlink	= ip->i_d.di_nlink;
> > +	inode->i_uid	= ip->i_d.di_uid;
> > +	inode->i_gid	= ip->i_d.di_gid;
> > +
> > +	switch (inode->i_mode & S_IFMT) {
> > +	case S_IFBLK:
> > +	case S_IFCHR:
> > +		inode->i_rdev =
> > +			MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff,
> > +			      sysv_minor(ip->i_df.if_u2.if_rdev));
> > +		break;
> > +	default:
> > +		inode->i_rdev = 0;
> > +		break;
> > +	}
> > +
> > +	inode->i_generation = ip->i_d.di_gen;
> > +	i_size_write(inode, ip->i_d.di_size);
> > +	inode->i_atime.tv_sec	= ip->i_d.di_atime.t_sec;
> > +	inode->i_atime.tv_nsec	= ip->i_d.di_atime.t_nsec;
> > +	inode->i_mtime.tv_sec	= ip->i_d.di_mtime.t_sec;
> > +	inode->i_mtime.tv_nsec	= ip->i_d.di_mtime.t_nsec;
> > +	inode->i_ctime.tv_sec	= ip->i_d.di_ctime.t_sec;
> > +	inode->i_ctime.tv_nsec	= ip->i_d.di_ctime.t_nsec;
> > +	xfs_diflags_to_iflags(inode, ip);
> > +	xfs_iflags_clear(ip, XFS_IMODIFIED);
> > +
> > +	switch (inode->i_mode & S_IFMT) {
> > +	case S_IFREG:
> > +		inode->i_op = &xfs_inode_operations;
> > +		inode->i_fop = &xfs_file_operations;
> > +		inode->i_mapping->a_ops = &xfs_address_space_operations;
> > +		break;
> > +	case S_IFDIR:
> > +		inode->i_op = &xfs_dir_inode_operations;
> > +		inode->i_fop = &xfs_dir_file_operations;
> > +		break;
> > +	case S_IFLNK:
> > +		inode->i_op = &xfs_symlink_inode_operations;
> > +		if (!(ip->i_df.if_flags & XFS_IFINLINE))
> > +			inode->i_mapping->a_ops = &xfs_address_space_operations;
> > +		break;
> > +	default:
> > +		inode->i_op = &xfs_inode_operations;
> > +		init_special_inode(inode, inode->i_mode, inode->i_rdev);
> > +		break;
> > +	}
> > +
> > +	xfs_iflags_clear(ip, XFS_INEW);
> > +	barrier();
> > +
> > +	unlock_new_inode(inode);
> > +}
> > Index: linux-2.6-xfs/fs/xfs/linux-2.6/xfs_iops.h
> > ===================================================================
> > --- linux-2.6-xfs.orig/fs/xfs/linux-2.6/xfs_iops.h	2008-05-02 08:41:27.000000000 +0200
> > +++ linux-2.6-xfs/fs/xfs/linux-2.6/xfs_iops.h	2008-05-02 08:41:35.000000000 +0200
> > @@ -18,9 +18,7 @@
> >  #ifndef __XFS_IOPS_H__
> >  #define __XFS_IOPS_H__
> >  
> > -extern const struct inode_operations xfs_inode_operations;
> > -extern const struct inode_operations xfs_dir_inode_operations;
> > -extern const struct inode_operations xfs_symlink_inode_operations;
> > +struct xfs_inode;
> >  
> >  extern const struct file_operations xfs_file_operations;
> >  extern const struct file_operations xfs_dir_file_operations;
> > @@ -28,10 +26,11 @@ extern const struct file_operations xfs_
> >  
> >  extern ssize_t xfs_vn_listxattr(struct dentry *, char *data, size_t size);
> >  
> > -struct xfs_inode;
> >  extern void xfs_ichgtime(struct xfs_inode *, int);
> >  extern void xfs_ichgtime_fast(struct xfs_inode *, struct inode *, int);
> >  
> > +extern void xfs_setup_inode(struct xfs_inode *);
> > +
> >  #define xfs_vtoi(vp) \
> >  	((struct xfs_inode *)vn_to_inode(vp)->i_private)
> >  
> > Index: linux-2.6-xfs/fs/xfs/linux-2.6/xfs_ksyms.c
> > ===================================================================
> > --- linux-2.6-xfs.orig/fs/xfs/linux-2.6/xfs_ksyms.c	2008-05-02 08:41:27.000000000 +0200
> > +++ linux-2.6-xfs/fs/xfs/linux-2.6/xfs_ksyms.c	2008-05-02 08:41:35.000000000 +0200
> > @@ -155,12 +155,9 @@ EXPORT_SYMBOL(kmem_zone_free);
> >  EXPORT_SYMBOL(kmem_zone_init);
> >  EXPORT_SYMBOL(kmem_zone_zalloc);
> >  EXPORT_SYMBOL(xfs_address_space_operations);
> > -EXPORT_SYMBOL(xfs_dir_inode_operations);
> >  EXPORT_SYMBOL(xfs_dir_file_operations);
> > -EXPORT_SYMBOL(xfs_inode_operations);
> >  EXPORT_SYMBOL(xfs_file_operations);
> >  EXPORT_SYMBOL(xfs_invis_file_operations);
> > -EXPORT_SYMBOL(xfs_symlink_inode_operations);
> >  EXPORT_SYMBOL(xfs_buf_delwri_dequeue);
> >  EXPORT_SYMBOL(_xfs_buf_find);
> >  EXPORT_SYMBOL(xfs_buf_iostart);
> > Index: linux-2.6-xfs/fs/xfs/linux-2.6/xfs_super.c
> > ===================================================================
> > --- linux-2.6-xfs.orig/fs/xfs/linux-2.6/xfs_super.c	2008-05-02 08:41:34.000000000 +0200
> > +++ linux-2.6-xfs/fs/xfs/linux-2.6/xfs_super.c	2008-05-02 08:51:43.000000000 +0200
> > @@ -558,115 +558,6 @@ xfs_max_file_offset(
> >  	return (((__uint64_t)pagefactor) << bitshift) - 1;
> >  }
> >  
> > -STATIC_INLINE void
> > -xfs_set_inodeops(
> > -	struct inode		*inode)
> > -{
> > -	switch (inode->i_mode & S_IFMT) {
> > -	case S_IFREG:
> > -		inode->i_op = &xfs_inode_operations;
> > -		inode->i_fop = &xfs_file_operations;
> > -		inode->i_mapping->a_ops = &xfs_address_space_operations;
> > -		break;
> > -	case S_IFDIR:
> > -		inode->i_op = &xfs_dir_inode_operations;
> > -		inode->i_fop = &xfs_dir_file_operations;
> > -		break;
> > -	case S_IFLNK:
> > -		inode->i_op = &xfs_symlink_inode_operations;
> > -		if (!(XFS_I(inode)->i_df.if_flags & XFS_IFINLINE))
> > -			inode->i_mapping->a_ops = &xfs_address_space_operations;
> > -		break;
> > -	default:
> > -		inode->i_op = &xfs_inode_operations;
> > -		init_special_inode(inode, inode->i_mode, inode->i_rdev);
> > -		break;
> > -	}
> > -}
> > -
> > -STATIC_INLINE void
> > -xfs_revalidate_inode(
> > -	xfs_mount_t		*mp,
> > -	bhv_vnode_t		*vp,
> > -	xfs_inode_t		*ip)
> > -{
> > -	struct inode		*inode = vn_to_inode(vp);
> > -
> > -	inode->i_mode	= ip->i_d.di_mode;
> > -	inode->i_nlink	= ip->i_d.di_nlink;
> > -	inode->i_uid	= ip->i_d.di_uid;
> > -	inode->i_gid	= ip->i_d.di_gid;
> > -
> > -	switch (inode->i_mode & S_IFMT) {
> > -	case S_IFBLK:
> > -	case S_IFCHR:
> > -		inode->i_rdev =
> > -			MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff,
> > -			      sysv_minor(ip->i_df.if_u2.if_rdev));
> > -		break;
> > -	default:
> > -		inode->i_rdev = 0;
> > -		break;
> > -	}
> > -
> > -	inode->i_generation = ip->i_d.di_gen;
> > -	i_size_write(inode, ip->i_d.di_size);
> > -	inode->i_atime.tv_sec	= ip->i_d.di_atime.t_sec;
> > -	inode->i_atime.tv_nsec	= ip->i_d.di_atime.t_nsec;
> > -	inode->i_mtime.tv_sec	= ip->i_d.di_mtime.t_sec;
> > -	inode->i_mtime.tv_nsec	= ip->i_d.di_mtime.t_nsec;
> > -	inode->i_ctime.tv_sec	= ip->i_d.di_ctime.t_sec;
> > -	inode->i_ctime.tv_nsec	= ip->i_d.di_ctime.t_nsec;
> > -	if (ip->i_d.di_flags & XFS_DIFLAG_IMMUTABLE)
> > -		inode->i_flags |= S_IMMUTABLE;
> > -	else
> > -		inode->i_flags &= ~S_IMMUTABLE;
> > -	if (ip->i_d.di_flags & XFS_DIFLAG_APPEND)
> > -		inode->i_flags |= S_APPEND;
> > -	else
> > -		inode->i_flags &= ~S_APPEND;
> > -	if (ip->i_d.di_flags & XFS_DIFLAG_SYNC)
> > -		inode->i_flags |= S_SYNC;
> > -	else
> > -		inode->i_flags &= ~S_SYNC;
> > -	if (ip->i_d.di_flags & XFS_DIFLAG_NOATIME)
> > -		inode->i_flags |= S_NOATIME;
> > -	else
> > -		inode->i_flags &= ~S_NOATIME;
> > -	xfs_iflags_clear(ip, XFS_IMODIFIED);
> > -}
> > -
> > -void
> > -xfs_initialize_vnode(
> > -	struct xfs_mount	*mp,
> > -	bhv_vnode_t		*vp,
> > -	struct xfs_inode	*ip)
> > -{
> > -	struct inode		*inode = vn_to_inode(vp);
> > -
> > -	if (!ip->i_vnode) {
> > -		ip->i_vnode = vp;
> > -		inode->i_private = ip;
> > -	}
> > -
> > -	/*
> > -	 * We need to set the ops vectors, and unlock the inode, but if
> > -	 * we have been called during the new inode create process, it is
> > -	 * too early to fill in the Linux inode.  We will get called a
> > -	 * second time once the inode is properly set up, and then we can
> > -	 * finish our work.
> > -	 */
> > -	if (ip->i_d.di_mode != 0 && (inode->i_state & I_NEW)) {
> > -		xfs_revalidate_inode(mp, vp, ip);
> > -		xfs_set_inodeops(inode);
> > -
> > -		xfs_iflags_clear(ip, XFS_INEW);
> > -		barrier();
> > -
> > -		unlock_new_inode(inode);
> > -	}
> > -}
> > -
> >  int
> >  xfs_blkdev_get(
> >  	xfs_mount_t		*mp,
> > Index: linux-2.6-xfs/fs/xfs/linux-2.6/xfs_super.h
> > ===================================================================
> > --- linux-2.6-xfs.orig/fs/xfs/linux-2.6/xfs_super.h	2008-05-02 08:41:27.000000000 +0200
> > +++ linux-2.6-xfs/fs/xfs/linux-2.6/xfs_super.h	2008-05-02 08:41:35.000000000 +0200
> > @@ -72,9 +72,6 @@ struct block_device;
> >  
> >  extern __uint64_t xfs_max_file_offset(unsigned int);
> >  
> > -extern void xfs_initialize_vnode(struct xfs_mount *mp, bhv_vnode_t *vp,
> > -		struct xfs_inode *ip);
> > -
> >  extern void xfs_flush_inode(struct xfs_inode *);
> >  extern void xfs_flush_device(struct xfs_inode *);
> >  
> > Index: linux-2.6-xfs/fs/xfs/xfs_iget.c
> > ===================================================================
> > --- linux-2.6-xfs.orig/fs/xfs/xfs_iget.c	2008-05-02 08:41:27.000000000 +0200
> > +++ linux-2.6-xfs/fs/xfs/xfs_iget.c	2008-05-02 08:53:18.000000000 +0200
> > @@ -288,10 +288,17 @@ finish_inode:
> >  	*ipp = ip;
> >  
> >  	/*
> > +	 * Set up the Linux with the Linux inode.
> > +	 */
> > +	ip->i_vnode = inode;
> > +	inode->i_private = ip;
> > +
> > +	/*
> >  	 * If we have a real type for an on-disk inode, we can set ops(&unlock)
> >  	 * now.	 If it's a new inode being created, xfs_ialloc will handle it.
> >  	 */
> > -	xfs_initialize_vnode(mp, inode, ip);
> > +	if (ip->i_d.di_mode != 0)
> > +		xfs_setup_inode(ip);
> >  	return 0;
> >  }
> >  
> > Index: linux-2.6-xfs/fs/xfs/xfs_inode.c
> > ===================================================================
> > --- linux-2.6-xfs.orig/fs/xfs/xfs_inode.c	2008-05-02 08:41:27.000000000 +0200
> > +++ linux-2.6-xfs/fs/xfs/xfs_inode.c	2008-05-02 08:41:35.000000000 +0200
> > @@ -1046,7 +1046,6 @@ xfs_ialloc(
> >  {
> >  	xfs_ino_t	ino;
> >  	xfs_inode_t	*ip;
> > -	bhv_vnode_t	*vp;
> >  	uint		flags;
> >  	int		error;
> >  
> > @@ -1077,7 +1076,6 @@ xfs_ialloc(
> >  	}
> >  	ASSERT(ip != NULL);
> >  
> > -	vp = XFS_ITOV(ip);
> >  	ip->i_d.di_mode = (__uint16_t)mode;
> >  	ip->i_d.di_onlink = 0;
> >  	ip->i_d.di_nlink = nlink;
> > @@ -1220,7 +1218,7 @@ xfs_ialloc(
> >  	xfs_trans_log_inode(tp, ip, flags);
> >  
> >  	/* now that we have an i_mode we can setup inode ops and unlock */
> > -	xfs_initialize_vnode(tp->t_mountp, vp, ip);
> > +	xfs_setup_inode(ip);
> >  
> >  	*ipp = ip;
> >  	return 0;
> ---end quoted text---
---end quoted text---