[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>

8 files changed, 68 insertions, 85 deletions

diff --git a/fs/xfs/linux-2.6/xfs_ioctl.c b/fs/xfs/linux-2.6/xfs_ioctl.c
index 35cbd88..6a3326b 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 f252605..d237cc5 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 f6dd7de..d2c8a11 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 353276b..ad16af3 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 6cb0a01..bc9ed72 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 *);
diff --git a/fs/xfs/xfs_acl.c b/fs/xfs/xfs_acl.c
index 8d01dce..92fd1d6 100644
--- a/fs/xfs/xfs_acl.c
+++ b/fs/xfs/xfs_acl.c
@@ -85,7 +85,7 @@ xfs_acl_vhasacl_default(
 {
 	int		error;
 
-	if (vp->v_type != VDIR)
+	if (!VN_ISDIR(vp))
 		return 0;
 	xfs_acl_get_attr(vp, NULL, _ACL_TYPE_DEFAULT, ATTR_KERNOVAL, &error);
 	return (error == 0);
@@ -389,7 +389,7 @@ xfs_acl_allow_set(
 
 	if (vp->v_inode.i_flags & (S_IMMUTABLE|S_APPEND))
 		return EPERM;
-	if (kind == _ACL_TYPE_DEFAULT && vp->v_type != VDIR)
+	if (kind == _ACL_TYPE_DEFAULT && !VN_ISDIR(vp))
 		return ENOTDIR;
 	if (vp->v_vfsp->vfs_flag & VFS_RDONLY)
 		return EROFS;
@@ -750,7 +750,7 @@ xfs_acl_inherit(
 	 * If the new file is a directory, its default ACL is a copy of
 	 * the containing directory's default ACL.
 	 */
-	if (vp->v_type == VDIR)
+	if (VN_ISDIR(vp))
 		xfs_acl_set_attr(vp, pdaclp, _ACL_TYPE_DEFAULT, &error);
 	if (!error && !basicperms)
 		xfs_acl_set_attr(vp, cacl, _ACL_TYPE_ACCESS, &error);
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index 34bdf59..db43308 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -1128,7 +1128,6 @@ xfs_ialloc(
 	ASSERT(ip != NULL);
 
 	vp = XFS_ITOV(ip);
-	vp->v_type = IFTOVT(mode);
 	ip->i_d.di_mode = (__uint16_t)mode;
 	ip->i_d.di_onlink = 0;
 	ip->i_d.di_nlink = nlink;
@@ -1250,7 +1249,7 @@ xfs_ialloc(
 	 */
 	xfs_trans_log_inode(tp, ip, flags);
 
-	/* now that we have a v_type we can set Linux inode ops (& unlock) */
+	/* now that we have an i_mode  we can set Linux inode ops (& unlock) */
 	VFS_INIT_VNODE(XFS_MTOVFS(tp->t_mountp), vp, XFS_ITOBHV(ip), 1);
 
 	*ipp = ip;
diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c
index 1377c86..c4aa24f 100644
--- a/fs/xfs/xfs_vnodeops.c
+++ b/fs/xfs/xfs_vnodeops.c
@@ -104,7 +104,7 @@ xfs_open(
 	 * If it's a directory with any blocks, read-ahead block 0
 	 * as we're almost certain to have the next operation be a read there.
 	 */
-	if (vp->v_type == VDIR && ip->i_d.di_nextents > 0) {
+	if (VN_ISDIR(vp) && ip->i_d.di_nextents > 0) {
 		mode = xfs_ilock_map_shared(ip);
 		if (ip->i_d.di_nextents > 0)
 			(void)xfs_da_reada_buf(NULL, ip, 0, XFS_DATA_FORK);
@@ -163,18 +163,21 @@ xfs_getattr(
 	/*
 	 * Copy from in-core inode.
 	 */
-	vap->va_type = vp->v_type;
-	vap->va_mode = ip->i_d.di_mode & MODEMASK;
+	vap->va_mode = ip->i_d.di_mode;
 	vap->va_uid = ip->i_d.di_uid;
 	vap->va_gid = ip->i_d.di_gid;
 	vap->va_projid = ip->i_d.di_projid;
 
 	/*
 	 * Check vnode type block/char vs. everything else.
-	 * Do it with bitmask because that's faster than looking
-	 * for multiple values individually.
 	 */
-	if (((1 << vp->v_type) & ((1<<VBLK) | (1<<VCHR))) == 0) {
+	switch (ip->i_d.di_mode & S_IFMT) {
+	case S_IFBLK:
+	case S_IFCHR:
+		vap->va_rdev = ip->i_df.if_u2.if_rdev;
+		vap->va_blocksize = BLKDEV_IOSIZE;
+		break;
+	default:
 		vap->va_rdev = 0;
 
 		if (!(ip->i_d.di_flags & XFS_DIFLAG_REALTIME)) {
@@ -224,9 +227,7 @@ xfs_getattr(
 				(ip->i_d.di_extsize << mp->m_sb.sb_blocklog) :
 				(mp->m_sb.sb_rextsize << mp->m_sb.sb_blocklog);
 		}
-	} else {
-		vap->va_rdev = ip->i_df.if_u2.if_rdev;
-		vap->va_blocksize = BLKDEV_IOSIZE;
+		break;
 	}
 
 	vap->va_atime.tv_sec = ip->i_d.di_atime.t_sec;
@@ -468,7 +469,7 @@ xfs_setattr(
 				m |= S_ISGID;
 #if 0
 			/* Linux allows this, Irix doesn't. */
-			if ((vap->va_mode & S_ISVTX) && vp->v_type != VDIR)
+			if ((vap->va_mode & S_ISVTX) && !VN_ISDIR(vp))
 				m |= S_ISVTX;
 #endif
 			if (m && !capable(CAP_FSETID))
@@ -546,10 +547,10 @@ xfs_setattr(
 			goto error_return;
 		}
 
-		if (vp->v_type == VDIR) {
+		if (VN_ISDIR(vp)) {
 			code = XFS_ERROR(EISDIR);
 			goto error_return;
-		} else if (vp->v_type != VREG) {
+		} else if (!VN_ISREG(vp)) {
 			code = XFS_ERROR(EINVAL);
 			goto error_return;
 		}
@@ -1567,7 +1568,7 @@ xfs_release(
 	vp = BHV_TO_VNODE(bdp);
 	ip = XFS_BHVTOI(bdp);
 
-	if ((vp->v_type != VREG) || (ip->i_d.di_mode == 0)) {
+	if (!VN_ISREG(vp) || (ip->i_d.di_mode == 0)) {
 		return 0;
 	}
 
@@ -1895,7 +1896,7 @@ xfs_create(
 	dp = XFS_BHVTOI(dir_bdp);
 	mp = dp->i_mount;
 
-	dm_di_mode = vap->va_mode|VTTOIF(vap->va_type);
+	dm_di_mode = vap->va_mode;
 	namelen = VNAMELEN(dentry);
 
 	if (DM_EVENT_ENABLED(dir_vp->v_vfsp, dp, DM_EVENT_CREATE)) {
@@ -1973,8 +1974,7 @@ xfs_create(
 	    (error = XFS_DIR_CANENTER(mp, tp, dp, name, namelen)))
 		goto error_return;
 	rdev = (vap->va_mask & XFS_AT_RDEV) ? vap->va_rdev : 0;
-	error = xfs_dir_ialloc(&tp, dp,
-			MAKEIMODE(vap->va_type,vap->va_mode), 1,
+	error = xfs_dir_ialloc(&tp, dp, vap->va_mode, 1,
 			rdev, credp, prid, resblks > 0,
 			&ip, &committed);
 	if (error) {
@@ -2620,7 +2620,7 @@ xfs_link(
 	vn_trace_entry(src_vp, __FUNCTION__, (inst_t *)__return_address);
 
 	target_namelen = VNAMELEN(dentry);
-	if (src_vp->v_type == VDIR)
+	if (VN_ISDIR(src_vp))
 		return XFS_ERROR(EPERM);
 
 	src_bdp = vn_bhv_lookup_unlocked(VN_BHV_HEAD(src_vp), &xfs_vnodeops);
@@ -2805,7 +2805,7 @@ xfs_mkdir(
 
 	tp = NULL;
 	dp_joined_to_trans = B_FALSE;
-	dm_di_mode = vap->va_mode|VTTOIF(vap->va_type);
+	dm_di_mode = vap->va_mode;
 
 	if (DM_EVENT_ENABLED(dir_vp->v_vfsp, dp, DM_EVENT_CREATE)) {
 		error = XFS_SEND_NAMESP(mp, DM_EVENT_CREATE,
@@ -2879,8 +2879,7 @@ xfs_mkdir(
 	/*
 	 * create the directory inode.
 	 */
-	error = xfs_dir_ialloc(&tp, dp,
-			MAKEIMODE(vap->va_type,vap->va_mode), 2,
+	error = xfs_dir_ialloc(&tp, dp, vap->va_mode, 2,
 			0, credp, prid, resblks > 0,
 		&cdp, NULL);
 	if (error) {
@@ -3650,7 +3649,7 @@ xfs_rwlock(
 	vnode_t		*vp;
 
 	vp = BHV_TO_VNODE(bdp);
-	if (vp->v_type == VDIR)
+	if (VN_ISDIR(vp))
 		return 1;
 	ip = XFS_BHVTOI(bdp);
 	if (locktype == VRWLOCK_WRITE) {
@@ -3681,7 +3680,7 @@ xfs_rwunlock(
 	vnode_t		*vp;
 
 	vp = BHV_TO_VNODE(bdp);
-	if (vp->v_type == VDIR)
+	if (VN_ISDIR(vp))
 		return;
 	ip = XFS_BHVTOI(bdp);
 	if (locktype == VRWLOCK_WRITE) {
@@ -4567,7 +4566,7 @@ xfs_change_file_space(
 	/*
 	 * must be a regular file and have write permission
 	 */
-	if (vp->v_type != VREG)
+	if (!VN_ISREG(vp))
 		return XFS_ERROR(EINVAL);
 
 	xfs_ilock(ip, XFS_ILOCK_SHARED);