[XFS] remove struct vnode::v_type

SGI-PV: 936236
SGI-Modid: xfs-linux:xfs-kern:195878a

Signed-off-by: Christoph Hellwig <hch@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>

5 files changed, 42 insertions, 57 deletions

diff --git a/fs/xfs/linux-2.6/xfs_ioctl.c b/fs/xfs/linux-2.6/xfs_ioctl.c
index 35cbd88e1a5..6a3326bcd8d 100644
--- a/fs/xfs/linux-2.6/xfs_ioctl.c
+++ b/fs/xfs/linux-2.6/xfs_ioctl.c
@@ -141,13 +141,19 @@ xfs_find_handle(
 		return -XFS_ERROR(EINVAL);
 	}
 
-	/* we need the vnode */
-	vp = LINVFS_GET_VP(inode);
-	if (vp->v_type != VREG && vp->v_type != VDIR && vp->v_type != VLNK) {
+	switch (inode->i_mode & S_IFMT) {
+	case S_IFREG:
+	case S_IFDIR:
+	case S_IFLNK:
+		break;
+	default:
 		iput(inode);
 		return -XFS_ERROR(EBADF);
 	}
 
+	/* we need the vnode */
+	vp = LINVFS_GET_VP(inode);
+
 	/* now we can grab the fsid */
 	memcpy(&handle.ha_fsid, vp->v_vfsp->vfs_altfsid, sizeof(xfs_fsid_t));
 	hsize = sizeof(xfs_fsid_t);
@@ -386,7 +392,7 @@ xfs_readlink_by_handle(
 		return -error;
 
 	/* Restrict this handle operation to symlinks only. */
-	if (vp->v_type != VLNK) {
+	if (!S_ISLNK(inode->i_mode)) {
 		VN_RELE(vp);
 		return -XFS_ERROR(EINVAL);
 	}
@@ -985,7 +991,7 @@ xfs_ioc_space(
 	if (!(filp->f_mode & FMODE_WRITE))
 		return -XFS_ERROR(EBADF);
 
-	if (vp->v_type != VREG)
+	if (!VN_ISREG(vp))
 		return -XFS_ERROR(EINVAL);
 
 	if (copy_from_user(&bf, arg, sizeof(bf)))
diff --git a/fs/xfs/linux-2.6/xfs_iops.c b/fs/xfs/linux-2.6/xfs_iops.c
index f252605514e..d237cc5be76 100644
--- a/fs/xfs/linux-2.6/xfs_iops.c
+++ b/fs/xfs/linux-2.6/xfs_iops.c
@@ -140,7 +140,6 @@ linvfs_mknod(
 
 	memset(&va, 0, sizeof(va));
 	va.va_mask = XFS_AT_TYPE|XFS_AT_MODE;
-	va.va_type = IFTOVT(mode);
 	va.va_mode = mode;
 
 	switch (mode & S_IFMT) {
@@ -308,14 +307,13 @@ linvfs_symlink(
 	cvp = NULL;
 
 	memset(&va, 0, sizeof(va));
-	va.va_type = VLNK;
-	va.va_mode = irix_symlink_mode ? 0777 & ~current->fs->umask : S_IRWXUGO;
+	va.va_mode = S_IFLNK |
+		(irix_symlink_mode ? 0777 & ~current->fs->umask : S_IRWXUGO);
 	va.va_mask = XFS_AT_TYPE|XFS_AT_MODE;
 
 	error = 0;
 	VOP_SYMLINK(dvp, dentry, &va, (char *)symname, &cvp, NULL, error);
 	if (!error && cvp) {
-		ASSERT(cvp->v_type == VLNK);
 		ip = LINVFS_GET_IP(cvp);
 		d_instantiate(dentry, ip);
 		validate_fields(dir);
diff --git a/fs/xfs/linux-2.6/xfs_super.c b/fs/xfs/linux-2.6/xfs_super.c
index f6dd7de2592..d2c8a11e22b 100644
--- a/fs/xfs/linux-2.6/xfs_super.c
+++ b/fs/xfs/linux-2.6/xfs_super.c
@@ -138,24 +138,25 @@ STATIC __inline__ void
 xfs_set_inodeops(
 	struct inode		*inode)
 {
-	vnode_t			*vp = LINVFS_GET_VP(inode);
-
-	if (vp->v_type == VNON) {
-		vn_mark_bad(vp);
-	} else if (S_ISREG(inode->i_mode)) {
+	switch (inode->i_mode & S_IFMT) {
+	case S_IFREG:
 		inode->i_op = &linvfs_file_inode_operations;
 		inode->i_fop = &linvfs_file_operations;
 		inode->i_mapping->a_ops = &linvfs_aops;
-	} else if (S_ISDIR(inode->i_mode)) {
+		break;
+	case S_IFDIR:
 		inode->i_op = &linvfs_dir_inode_operations;
 		inode->i_fop = &linvfs_dir_operations;
-	} else if (S_ISLNK(inode->i_mode)) {
+		break;
+	case S_IFLNK:
 		inode->i_op = &linvfs_symlink_inode_operations;
 		if (inode->i_blocks)
 			inode->i_mapping->a_ops = &linvfs_aops;
-	} else {
+		break;
+	default:
 		inode->i_op = &linvfs_file_inode_operations;
 		init_special_inode(inode, inode->i_mode, inode->i_rdev);
+		break;
 	}
 }
 
@@ -167,16 +168,23 @@ xfs_revalidate_inode(
 {
 	struct inode		*inode = LINVFS_GET_IP(vp);
 
-	inode->i_mode	= (ip->i_d.di_mode & MODEMASK) | VTTOIF(vp->v_type);
+	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;
-	if (((1 << vp->v_type) & ((1<<VBLK) | (1<<VCHR))) == 0) {
+
+	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;
-	} else {
-		xfs_dev_t dev = ip->i_df.if_u2.if_rdev;
-		inode->i_rdev = MKDEV(sysv_major(dev) & 0x1ff, sysv_minor(dev));
+		break;
 	}
+
 	inode->i_blksize = PAGE_CACHE_SIZE;
 	inode->i_generation = ip->i_d.di_gen;
 	i_size_write(inode, ip->i_d.di_size);
@@ -231,7 +239,6 @@ xfs_initialize_vnode(
 	 * finish our work.
 	 */
 	if (ip->i_d.di_mode != 0 && unlock && (inode->i_state & I_NEW)) {
-		vp->v_type = IFTOVT(ip->i_d.di_mode);
 		xfs_revalidate_inode(XFS_BHVTOM(bdp), vp, ip);
 		xfs_set_inodeops(inode);
 	
diff --git a/fs/xfs/linux-2.6/xfs_vnode.c b/fs/xfs/linux-2.6/xfs_vnode.c
index 353276bda34..ad16af38e96 100644
--- a/fs/xfs/linux-2.6/xfs_vnode.c
+++ b/fs/xfs/linux-2.6/xfs_vnode.c
@@ -44,19 +44,6 @@ DEFINE_SPINLOCK(vnumber_lock);
 #define vptosync(v)             (&vsync[((unsigned long)v) % NVSYNC])
 sv_t vsync[NVSYNC];
 
-/*
- * Translate stat(2) file types to vnode types and vice versa.
- * Aware of numeric order of S_IFMT and vnode type values.
- */
-enum vtype iftovt_tab[] = {
-	VNON, VFIFO, VCHR, VNON, VDIR, VNON, VBLK, VNON,
-	VREG, VNON, VLNK, VNON, VSOCK, VNON, VNON, VNON
-};
-
-u_short vttoif_tab[] = {
-	0, S_IFREG, S_IFDIR, S_IFBLK, S_IFCHR, S_IFLNK, S_IFIFO, 0, S_IFSOCK
-};
-
 
 void
 vn_init(void)
@@ -95,7 +82,6 @@ vn_reclaim(
 	vp->v_flag &= (VRECLM|VWAIT);
 	VN_UNLOCK(vp, 0);
 
-	vp->v_type = VNON;
 	vp->v_fbhv = NULL;
 
 #ifdef XFS_VNODE_TRACE
@@ -174,7 +160,7 @@ vn_revalidate_core(
 {
 	struct inode	*inode = LINVFS_GET_IP(vp);
 
-	inode->i_mode	    = VTTOIF(vap->va_type) | vap->va_mode;
+	inode->i_mode	    = vap->va_mode;
 	inode->i_nlink	    = vap->va_nlink;
 	inode->i_uid	    = vap->va_uid;
 	inode->i_gid	    = vap->va_gid;
diff --git a/fs/xfs/linux-2.6/xfs_vnode.h b/fs/xfs/linux-2.6/xfs_vnode.h
index 6cb0a01df25..bc9ed722ba1 100644
--- a/fs/xfs/linux-2.6/xfs_vnode.h
+++ b/fs/xfs/linux-2.6/xfs_vnode.h
@@ -65,10 +65,6 @@ struct vattr;
 struct xfs_iomap;
 struct attrlist_cursor_kern;
 
-/*
- * Vnode types.  VNON means no type.
- */
-enum vtype	{ VNON, VREG, VDIR, VBLK, VCHR, VLNK, VFIFO, VBAD, VSOCK };
 
 typedef xfs_ino_t vnumber_t;
 typedef struct dentry vname_t;
@@ -77,11 +73,9 @@ typedef bhv_head_t vn_bhv_head_t;
 /*
  * MP locking protocols:
  *	v_flag, v_vfsp				VN_LOCK/VN_UNLOCK
- *	v_type					read-only or fs-dependent
  */
 typedef struct vnode {
 	__u32		v_flag;			/* vnode flags (see below) */
-	enum vtype	v_type;			/* vnode type */
 	struct vfs	*v_vfsp;		/* ptr to containing VFS */
 	vnumber_t	v_number;		/* in-core vnode number */
 	vn_bhv_head_t	v_bh;			/* behavior head */
@@ -93,6 +87,12 @@ typedef struct vnode {
 	/* inode MUST be last */
 } vnode_t;
 
+#define VN_ISLNK(vp)	S_ISLNK((vp)->v_inode.i_mode)
+#define VN_ISREG(vp)	S_ISREG((vp)->v_inode.i_mode)
+#define VN_ISDIR(vp)	S_ISDIR((vp)->v_inode.i_mode)
+#define VN_ISCHR(vp)	S_ISCHR((vp)->v_inode.i_mode)
+#define VN_ISBLK(vp)	S_ISBLK((vp)->v_inode.i_mode)
+
 #define v_fbhv			v_bh.bh_first	       /* first behavior */
 #define v_fops			v_bh.bh_first->bd_ops  /* first behavior ops */
 
@@ -133,17 +133,6 @@ typedef enum {
 #define LINVFS_GET_IP(vp)	(&(vp)->v_inode)
 
 /*
- * Convert between vnode types and inode formats (since POSIX.1
- * defines mode word of stat structure in terms of inode formats).
- */
-extern enum vtype	iftovt_tab[];
-extern u_short		vttoif_tab[];
-#define IFTOVT(mode)	(iftovt_tab[((mode) & S_IFMT) >> 12])
-#define VTTOIF(indx)	(vttoif_tab[(int)(indx)])
-#define MAKEIMODE(indx, mode)	(int)(VTTOIF(indx) | (mode))
-
-
-/*
  * Vnode flags.
  */
 #define VINACT		       0x1	/* vnode is being inactivated	*/
@@ -408,7 +397,6 @@ typedef struct vnodeops {
  */
 typedef struct vattr {
 	int		va_mask;	/* bit-mask of attributes present */
-	enum vtype	va_type;	/* vnode type (for create) */
 	mode_t		va_mode;	/* file access mode and type */
 	xfs_nlink_t	va_nlink;	/* number of references to file */
 	uid_t		va_uid;		/* owner user id */
@@ -498,7 +486,7 @@ typedef struct vattr {
  * Check whether mandatory file locking is enabled.
  */
 #define MANDLOCK(vp, mode)	\
-	((vp)->v_type == VREG && ((mode) & (VSGID|(VEXEC>>3))) == VSGID)
+	(VN_ISREG(vp) && ((mode) & (VSGID|(VEXEC>>3))) == VSGID)
 
 extern void	vn_init(void);
 extern int	vn_wait(struct vnode *);