patch-2.4.27 linux-2.4.27/fs/xfs/linux/xfs_super.c

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diff -urN linux-2.4.26/fs/xfs/linux/xfs_super.c linux-2.4.27/fs/xfs/linux/xfs_super.c
@@ -1,985 +0,0 @@
-/*
- * Copyright (c) 2000-2003 Silicon Graphics, Inc.  All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like.  Any license provided herein, whether implied or
- * otherwise, applies only to this software file.  Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA  94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
- */
-
-#include "xfs.h"
-
-#include "xfs_inum.h"
-#include "xfs_log.h"
-#include "xfs_clnt.h"
-#include "xfs_trans.h"
-#include "xfs_sb.h"
-#include "xfs_dir.h"
-#include "xfs_dir2.h"
-#include "xfs_alloc.h"
-#include "xfs_dmapi.h"
-#include "xfs_quota.h"
-#include "xfs_mount.h"
-#include "xfs_alloc_btree.h"
-#include "xfs_bmap_btree.h"
-#include "xfs_ialloc_btree.h"
-#include "xfs_btree.h"
-#include "xfs_ialloc.h"
-#include "xfs_attr_sf.h"
-#include "xfs_dir_sf.h"
-#include "xfs_dir2_sf.h"
-#include "xfs_dinode.h"
-#include "xfs_inode.h"
-#include "xfs_bmap.h"
-#include "xfs_bit.h"
-#include "xfs_rtalloc.h"
-#include "xfs_error.h"
-#include "xfs_itable.h"
-#include "xfs_rw.h"
-#include "xfs_acl.h"
-#include "xfs_cap.h"
-#include "xfs_mac.h"
-#include "xfs_attr.h"
-#include "xfs_buf_item.h"
-#include "xfs_utils.h"
-#include "xfs_version.h"
-
-#include <linux/blkdev.h>
-#include <linux/init.h>
-
-STATIC struct quotactl_ops linvfs_qops;
-STATIC struct super_operations linvfs_sops;
-STATIC kmem_cache_t * linvfs_inode_cachep;
-
-STATIC struct xfs_mount_args *
-xfs_args_allocate(
-	struct super_block	*sb)
-{
-	struct xfs_mount_args	*args;
-
-	args = kmem_zalloc(sizeof(struct xfs_mount_args), KM_SLEEP);
-	args->logbufs = args->logbufsize = -1;
-	strncpy(args->fsname, bdevname(sb->s_dev), MAXNAMELEN);
-
-	/* Copy the already-parsed mount(2) flags we're interested in */
-	if (sb->s_flags & MS_NOATIME)
-		args->flags |= XFSMNT_NOATIME;
-
-	/* Default to 32 bit inodes on Linux all the time */
-	args->flags |= XFSMNT_32BITINODES;
-
-	return args;
-}
-
-__uint64_t
-xfs_max_file_offset(
-	unsigned int		blockshift)
-{
-	unsigned int		pagefactor = 1;
-	unsigned int		bitshift = BITS_PER_LONG - 1;
-
-	/* Figure out maximum filesize, on Linux this can depend on
-	 * the filesystem blocksize (on 32 bit platforms).
-	 * __block_prepare_write does this in an [unsigned] long...
-	 *      page->index << (PAGE_CACHE_SHIFT - bbits)
-	 * So, for page sized blocks (4K on 32 bit platforms),
-	 * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is
-	 *      (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1)
-	 * but for smaller blocksizes it is less (bbits = log2 bsize).
-	 * Note1: get_block_t takes a long (implicit cast from above)
-	 * Note2: The Large Block Device (LBD and HAVE_SECTOR_T) patch
-	 * can optionally convert the [unsigned] long from above into
-	 * an [unsigned] long long.
-	 */
-
-#if BITS_PER_LONG == 32
-	pagefactor = PAGE_CACHE_SIZE >> (PAGE_CACHE_SHIFT - blockshift);
-#endif
-
-	return (((__uint64_t)pagefactor) << bitshift) - 1;
-}
-
-STATIC __inline__ void
-xfs_set_inodeops(
-	struct inode		*inode)
-{
-	vnode_t			*vp = LINVFS_GET_VP(inode);
-
-	if (vp->v_type == VNON) {
-		remove_inode_hash(inode);
-		make_bad_inode(inode);
-	} else if (S_ISREG(inode->i_mode)) {
-		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)) {
-		inode->i_op = &linvfs_dir_inode_operations;
-		inode->i_fop = &linvfs_dir_operations;
-	} else if (S_ISLNK(inode->i_mode)) {
-		inode->i_op = &linvfs_symlink_inode_operations;
-		if (inode->i_blocks)
-			inode->i_mapping->a_ops = &linvfs_aops;
-	} else {
-		inode->i_op = &linvfs_file_inode_operations;
-		init_special_inode(inode, inode->i_mode,
-					kdev_t_to_nr(inode->i_rdev));
-	}
-}
-
-STATIC __inline__ void
-xfs_revalidate_inode(
-	xfs_mount_t		*mp,
-	vnode_t			*vp,
-	xfs_inode_t		*ip)
-{
-	struct inode		*inode = LINVFS_GET_IP(vp);
-
-	inode->i_mode	= (ip->i_d.di_mode & MODEMASK) | VTTOIF(vp->v_type);
-	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) {
-		inode->i_rdev = NODEV;
-	} else {
-		xfs_dev_t dev = ip->i_df.if_u2.if_rdev;
-		inode->i_rdev = XFS_DEV_TO_KDEVT(dev);
-	}
-	inode->i_blksize = PAGE_CACHE_SIZE;
-	inode->i_generation = ip->i_d.di_gen;
-	i_size_write(inode, ip->i_d.di_size);
-	inode->i_blocks =
-		XFS_FSB_TO_BB(mp, ip->i_d.di_nblocks + ip->i_delayed_blks);
-	inode->i_atime	= ip->i_d.di_atime.t_sec;
-	inode->i_mtime	= ip->i_d.di_mtime.t_sec;
-	inode->i_ctime	= ip->i_d.di_ctime.t_sec;
-	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;
-
-	vp->v_flag &= ~VMODIFIED;
-}
-
-void
-xfs_initialize_vnode(
-	bhv_desc_t		*bdp,
-	vnode_t			*vp,
-	bhv_desc_t		*inode_bhv,
-	int			unlock)
-{
-	xfs_inode_t		*ip = XFS_BHVTOI(inode_bhv);
-	struct inode		*inode = LINVFS_GET_IP(vp);
-
-	if (!inode_bhv->bd_vobj) {
-		vp->v_vfsp = bhvtovfs(bdp);
-		bhv_desc_init(inode_bhv, ip, vp, &xfs_vnodeops);
-		bhv_insert(VN_BHV_HEAD(vp), inode_bhv);
-	}
-
-	vp->v_type = IFTOVT(ip->i_d.di_mode);
-
-	/* Have we been called during the new inode create process,
-	 * in which case we are too early to fill in the Linux inode.
-	 */
-	if (vp->v_type == VNON)
-		return;
-
-	xfs_revalidate_inode(XFS_BHVTOM(bdp), vp, ip);
-
-	/* For new inodes we need to set the ops vectors,
-	 * and unlock the inode.
-	 */
-	if (unlock && (inode->i_state & I_NEW)) {
-		xfs_set_inodeops(inode);
-		unlock_new_inode(inode);
-	}
-}
-
-struct inode *
-xfs_get_inode(
-	bhv_desc_t	*bdp,
-	xfs_ino_t	ino,
-	int		flags)
-{
-	struct vfs	*vfsp = bhvtovfs(bdp);
-
-	return iget_locked(vfsp->vfs_super, ino);
-}
-
-void
-xfs_flush_inode(
-	xfs_inode_t	*ip)
-{
-	struct inode	*inode = LINVFS_GET_IP(XFS_ITOV(ip));
-
-	filemap_fdatawrite(inode->i_mapping);
-}
-
-void
-xfs_flush_device(
-	xfs_inode_t	*ip)
-{
-	struct inode	*inode = LINVFS_GET_IP(XFS_ITOV(ip));
-
-	fsync_no_super(inode->i_dev);
-	xfs_log_force(ip->i_mount, (xfs_lsn_t)0, XFS_LOG_FORCE|XFS_LOG_SYNC);
-}
-
-struct dentry *
-d_alloc_anon(struct inode *inode)
-{
-	struct dentry *dentry;
-
-	spin_lock(&dcache_lock);
-	list_for_each_entry(dentry, &inode->i_dentry, d_alias) {
-		if (!(dentry->d_flags & DCACHE_NFSD_DISCONNECTED))
-			goto found;
-	}
-	spin_unlock(&dcache_lock);
-
-	dentry = d_alloc_root(inode);
-	if (likely(dentry != NULL))
-		dentry->d_flags |= DCACHE_NFSD_DISCONNECTED;
-	return dentry;
- found:
-	dget_locked(dentry);
-	dentry->d_vfs_flags |= DCACHE_REFERENCED;
-	spin_unlock(&dcache_lock);
-	iput(inode);
-	return dentry;
-}
-
-/*ARGSUSED*/
-int
-xfs_blkdev_get(
-	xfs_mount_t		*mp,
-	const char		*name,
-	struct block_device	**bdevp)
-{
-	struct nameidata	nd;
-	int			error;
-
-	error = path_lookup(name, LOOKUP_POSITIVE|LOOKUP_FOLLOW, &nd);
-	if (error) {
-		printk("XFS: Invalid device [%s], error=%d\n", name, error);
-		return -error;
-	}
-
-	/* I think we actually want bd_acquire here..  --hch */
-	*bdevp = bdget(kdev_t_to_nr(nd.dentry->d_inode->i_rdev));
-	if (*bdevp)
-		error = blkdev_get(*bdevp, FMODE_READ|FMODE_WRITE, 0, BDEV_FS);
-	else
-		error = -ENOMEM;
-
-	path_release(&nd);
-	return -error;
-}
-
-void
-xfs_blkdev_put(
-	struct block_device	*bdev)
-{
-	if (bdev)
-		blkdev_put(bdev, BDEV_FS);
-}
-
-void
-xfs_flush_buftarg(
-	xfs_buftarg_t		*btp)
-{
-	pagebuf_delwri_flush(btp, PBDF_WAIT, NULL);
-}
-
-void
-xfs_free_buftarg(
-	xfs_buftarg_t		*btp)
-{
-	xfs_flush_buftarg(btp);
-	kmem_free(btp, sizeof(*btp));
-}
-
-int
-xfs_readonly_buftarg(
-	xfs_buftarg_t		*btp)
-{
-	return is_read_only(btp->pbr_kdev);
-}
-
-void
-xfs_relse_buftarg(
-	xfs_buftarg_t		*btp)
-{
-	destroy_buffers(btp->pbr_kdev);
-	truncate_inode_pages(btp->pbr_mapping, 0LL);
-}
-
-unsigned int
-xfs_getsize_buftarg(
-	xfs_buftarg_t		*btp)
-{
-	return block_size(btp->pbr_kdev);
-}
-
-void
-xfs_setsize_buftarg(
-	xfs_buftarg_t		*btp,
-	unsigned int		blocksize,
-	unsigned int		sectorsize)
-{
-	btp->pbr_bsize = blocksize;
-	btp->pbr_sshift = ffs(sectorsize) - 1;
-	btp->pbr_smask = sectorsize - 1;
-
-	if (set_blocksize(btp->pbr_kdev, sectorsize)) {
-		printk(KERN_WARNING
-			"XFS: Cannot set_blocksize to %u on device 0x%x\n",
-			sectorsize, kdev_t_to_nr(btp->pbr_kdev));
-	}
-}
-
-xfs_buftarg_t *
-xfs_alloc_buftarg(
-	struct block_device	*bdev)
-{
-	xfs_buftarg_t		*btp;
-
-	btp = kmem_zalloc(sizeof(*btp), KM_SLEEP);
-
-	btp->pbr_dev =  bdev->bd_dev;
-	btp->pbr_kdev = to_kdev_t(btp->pbr_dev);
-	btp->pbr_bdev = bdev;
-	btp->pbr_mapping = bdev->bd_inode->i_mapping;
-	xfs_setsize_buftarg(btp, PAGE_CACHE_SIZE,
-			    get_hardsect_size(btp->pbr_kdev));
-
-	switch (MAJOR(btp->pbr_dev)) {
-	case MD_MAJOR:
-	case EVMS_MAJOR:
-		btp->pbr_flags = PBR_ALIGNED_ONLY;
-		break;
-	case LVM_BLK_MAJOR:
-		btp->pbr_flags = PBR_SECTOR_ONLY;
-		break;
-	}
-
-	return btp;
-}
-
-STATIC struct inode *
-linvfs_alloc_inode(
-	struct super_block	*sb)
-{
-	vnode_t			*vp;
-
-	vp = (vnode_t *)kmem_cache_alloc(linvfs_inode_cachep, 
-                kmem_flags_convert(KM_SLEEP));
-	if (!vp)
-		return NULL;
-	return LINVFS_GET_IP(vp);
-}
-
-STATIC void
-linvfs_destroy_inode(
-	struct inode		*inode)
-{
-	kmem_cache_free(linvfs_inode_cachep, LINVFS_GET_VP(inode));
-}
-
-#define VNODE_SIZE	\
-	(sizeof(vnode_t) - sizeof(struct inode) + offsetof(struct inode, u))
-
-STATIC void
-init_once(
-	void			*data,
-	kmem_cache_t		*cachep,
-	unsigned long		flags)
-{
-	vnode_t			*vp = (vnode_t *)data;
-
-	if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
-	    SLAB_CTOR_CONSTRUCTOR) {
-		struct inode *inode = LINVFS_GET_IP(vp);
-		memset(vp, 0, VNODE_SIZE);
-		__inode_init_once(inode);
-	}
-}
-
-STATIC int
-init_inodecache( void )
-{
-	linvfs_inode_cachep = kmem_cache_create("linvfs_icache",
-				VNODE_SIZE, 0, SLAB_HWCACHE_ALIGN,
-				init_once, NULL);
-
-	if (linvfs_inode_cachep == NULL)
-		return -ENOMEM;
-	return 0;
-}
-
-STATIC void
-destroy_inodecache( void )
-{
-	if (kmem_cache_destroy(linvfs_inode_cachep))
-		printk(KERN_WARNING "%s: cache still in use!\n", __FUNCTION__);
-}
-
-/*
- * Attempt to flush the inode, this will actually fail
- * if the inode is pinned, but we dirty the inode again
- * at the point when it is unpinned after a log write,
- * since this is when the inode itself becomes flushable. 
- */
-STATIC void
-linvfs_write_inode(
-	struct inode		*inode,
-	int			sync)
-{
-	vnode_t			*vp = LINVFS_GET_VP(inode);
-	int			error, flags = FLUSH_INODE;
-
-	if (vp) {
-		vn_trace_entry(vp, __FUNCTION__, (inst_t *)__return_address);
-		if (sync)
-			flags |= FLUSH_SYNC;
-		VOP_IFLUSH(vp, flags, error);
-	}
-}
-
-STATIC void
-linvfs_clear_inode(
-	struct inode		*inode)
-{
-	vnode_t			*vp = LINVFS_GET_VP(inode);
-
-	if (vp) {
-		vn_rele(vp);
-		vn_trace_entry(vp, __FUNCTION__, (inst_t *)__return_address);
-		/*
-		 * Do all our cleanup, and remove this vnode.
-		 */
-		vn_remove(vp);
-	}
-}
-
-
-#define SYNCD_FLAGS	(SYNC_FSDATA|SYNC_BDFLUSH|SYNC_ATTR|SYNC_REFCACHE)
-
-STATIC int
-syncd(void *arg)
-{
-	vfs_t			*vfsp = (vfs_t *) arg;
-	int			error;
-
-	daemonize();
-	reparent_to_init();
-	sigmask_lock();
-	sigfillset(&current->blocked);
-	__recalc_sigpending(current);
-	sigmask_unlock();
-
-	sprintf(current->comm, "xfssyncd");
-
-	vfsp->vfs_sync_task = current;
-	wmb();
-	wake_up(&vfsp->vfs_wait_sync_task);
-
-	for (;;) {
-		set_current_state(TASK_INTERRUPTIBLE);
-		schedule_timeout(xfs_syncd_interval);
-		if (vfsp->vfs_flag & VFS_UMOUNT)
-			break;
-		if (vfsp->vfs_flag & VFS_RDONLY)
-			continue;
-		VFS_SYNC(vfsp, SYNCD_FLAGS, NULL, error);
-	}
-
-	vfsp->vfs_sync_task = NULL;
-	wmb();
-	wake_up(&vfsp->vfs_wait_sync_task);
-
-	return 0;
-}
-
-STATIC int
-linvfs_start_syncd(vfs_t *vfsp)
-{
-	int pid;
-
-	pid = kernel_thread(syncd, (void *) vfsp,
-			CLONE_VM | CLONE_FS | CLONE_FILES);
-	if (pid < 0)
-		return pid;
-	wait_event(vfsp->vfs_wait_sync_task, vfsp->vfs_sync_task);
-	return 0;
-}
-
-STATIC void
-linvfs_stop_syncd(vfs_t *vfsp)
-{
-	vfsp->vfs_flag |= VFS_UMOUNT;
-	wmb();
-
-	wake_up_process(vfsp->vfs_sync_task);
-	wait_event(vfsp->vfs_wait_sync_task, !vfsp->vfs_sync_task);
-}
-
-STATIC void
-linvfs_put_super(
-	struct super_block	*sb)
-{
-	vfs_t			*vfsp = LINVFS_GET_VFS(sb);
-	int			error;
-
-	linvfs_stop_syncd(vfsp);
-	VFS_SYNC(vfsp, SYNC_ATTR|SYNC_DELWRI, NULL, error);
-	if (!error)
-		VFS_UNMOUNT(vfsp, 0, NULL, error);
-	if (error) {
-		printk("XFS unmount got error %d\n", error);
-		printk("%s: vfsp/0x%p left dangling!\n", __FUNCTION__, vfsp);
-		return;
-	}
-
-	vfs_deallocate(vfsp);
-}
-
-STATIC void
-linvfs_write_super(
-	struct super_block	*sb)
-{
-	vfs_t			*vfsp = LINVFS_GET_VFS(sb);
-	int			error;
-
-	if (sb->s_flags & MS_RDONLY) {
-		sb->s_dirt = 0; /* paranoia */
-		return;
-	}
-	/* Push the log and superblock a little */
-	VFS_SYNC(vfsp, SYNC_FSDATA, NULL, error);
-	sb->s_dirt = 0;
-}
-
-STATIC int
-linvfs_sync_super(
-	struct super_block	*sb)
-{
-	vfs_t		*vfsp = LINVFS_GET_VFS(sb);
-	int		error;
-
-	VFS_SYNC(vfsp, SYNC_FSDATA|SYNC_WAIT, NULL, error);
-	return -error;
-}
-
-STATIC int
-linvfs_statfs(
-	struct super_block	*sb,
-	struct statfs		*statp)
-{
-	vfs_t			*vfsp = LINVFS_GET_VFS(sb);
-	int			error;
-
-	VFS_STATVFS(vfsp, statp, NULL, error);
-	return -error;
-}
-
-STATIC int
-linvfs_remount(
-	struct super_block	*sb,
-	int			*flags,
-	char			*options)
-{
-	vfs_t			*vfsp = LINVFS_GET_VFS(sb);
-	struct xfs_mount_args	*args = xfs_args_allocate(sb);
-	int			error;
-
-	VFS_PARSEARGS(vfsp, options, args, 1, error);
-	if (!error)
-		VFS_MNTUPDATE(vfsp, flags, args, error);
-	kmem_free(args, sizeof(*args));
-	return -error;
-}
-
-STATIC void
-linvfs_freeze_fs(
-	struct super_block	*sb)
-{
-	vfs_t			*vfsp = LINVFS_GET_VFS(sb);
-	vnode_t			*vp;
-	int			error;
-
-	if (sb->s_flags & MS_RDONLY)
-		return;
-	VFS_ROOT(vfsp, &vp, error);
-	VOP_IOCTL(vp, LINVFS_GET_IP(vp), NULL, 0, XFS_IOC_FREEZE, 0, error);
-	VN_RELE(vp);
-}
-
-STATIC void
-linvfs_unfreeze_fs(
-	struct super_block	*sb)
-{
-	vfs_t			*vfsp = LINVFS_GET_VFS(sb);
-	vnode_t			*vp;
-	int			error;
-
-	VFS_ROOT(vfsp, &vp, error);
-	VOP_IOCTL(vp, LINVFS_GET_IP(vp), NULL, 0, XFS_IOC_THAW, 0, error);
-	VN_RELE(vp);
-}
-
-STATIC int
-linvfs_dentry_to_fh(
-	struct dentry		*dentry,
-	__u32			*data,
-	int			*lenp,
-	int			need_parent)
-{
-	struct inode		*inode = dentry->d_inode ;
-	vnode_t			*vp = LINVFS_GET_VP(inode);
-	int			maxlen = *lenp;
-	xfs_fid2_t		fid;
-	int			error;
-
-	if (maxlen < 3)
-		return 255 ;
-
-	VOP_FID2(vp, (struct fid *)&fid, error);
-	data[0] = (__u32)fid.fid_ino;	/* 32 bits of inode is OK */
-	data[1] = fid.fid_gen;
-
-	*lenp = 2 ;
-	if (maxlen < 4 || ! need_parent)
-		return 2 ;
-
-	inode = dentry->d_parent->d_inode ;
-	vp = LINVFS_GET_VP(inode);
-
-	VOP_FID2(vp, (struct fid *)&fid, error);
-	data[2] = (__u32)fid.fid_ino;	/* 32 bits of inode is OK */
-	*lenp = 3 ;
-	if (maxlen < 4)
-		return 3 ;
-	data[3] = fid.fid_gen;
-	*lenp = 4 ;
-	return 4 ;
-}
-
-STATIC struct dentry *
-linvfs_fh_to_dentry(
-	struct super_block	*sb,
-	__u32			*data,
-	int			len,
-	int			fhtype,
-	int			parent)
-{
-	vnode_t			*vp;
-	struct inode		*inode = NULL;
-	struct dentry		*result;
-	xfs_fid2_t		xfid;
-	vfs_t			*vfsp = LINVFS_GET_VFS(sb);
-	int			error;
-
-	xfid.fid_len = sizeof(xfs_fid2_t) - sizeof(xfid.fid_len);
-	xfid.fid_pad = 0;
-
-	if (!parent) {
-		xfid.fid_gen = data[1];
-		xfid.fid_ino = (__u64)data[0];
-	} else {
-		if (fhtype == 4)
-			xfid.fid_gen = data[3];
-		else
-			xfid.fid_gen = 0;
-		xfid.fid_ino = (__u64)data[2];
-	}
-
-	VFS_VGET(vfsp, &vp, (fid_t *)&xfid, error);
-	if (error || vp == NULL)
-		return ERR_PTR(-ESTALE) ;
-
-	inode = LINVFS_GET_IP(vp);
-
-	result = d_alloc_anon(inode);
-	if (unlikely(result == NULL)) {
-		iput(inode);
-		return ERR_PTR(-ENOMEM);
-	}
-	return result;
-}
-
-STATIC int
-linvfs_show_options(
-	struct seq_file		*m,
-	struct vfsmount		*mnt)
-{
-	struct vfs		*vfsp = LINVFS_GET_VFS(mnt->mnt_sb);
-	int			error;
-
-	VFS_SHOWARGS(vfsp, m, error);
-	return error;
-}
-
-STATIC int
-linvfs_getxstate(
-	struct super_block	*sb,
-	struct fs_quota_stat	*fqs)
-{
-	struct vfs		*vfsp = LINVFS_GET_VFS(sb);
-	int			error;
-
-	VFS_QUOTACTL(vfsp, Q_XGETQSTAT, 0, (caddr_t)fqs, error);
-	return -error;
-}
-
-STATIC int
-linvfs_setxstate(
-	struct super_block	*sb,
-	unsigned int		flags,
-	int			op)
-{
-	struct vfs		*vfsp = LINVFS_GET_VFS(sb);
-	int			error;
-
-	VFS_QUOTACTL(vfsp, op, 0, (caddr_t)&flags, error);
-	return -error;
-}
-
-STATIC int
-linvfs_getxquota(
-	struct super_block	*sb,
-	int			type,
-	qid_t			id,
-	struct fs_disk_quota	*fdq)
-{
-	struct vfs		*vfsp = LINVFS_GET_VFS(sb);
-	int			error, getmode;
-
-	getmode = (type == GRPQUOTA) ? Q_XGETGQUOTA : Q_XGETQUOTA;
-	VFS_QUOTACTL(vfsp, getmode, id, (caddr_t)fdq, error);
-	return -error;
-}
-
-STATIC int
-linvfs_setxquota(
-	struct super_block	*sb,
-	int			type,
-	qid_t			id,
-	struct fs_disk_quota	*fdq)
-{
-	struct vfs		*vfsp = LINVFS_GET_VFS(sb);
-	int			error, setmode;
-
-	setmode = (type == GRPQUOTA) ? Q_XSETGQLIM : Q_XSETQLIM;
-	VFS_QUOTACTL(vfsp, setmode, id, (caddr_t)fdq, error);
-	return -error;
-}
-
-STATIC struct super_block *
-linvfs_read_super(
-	struct super_block	*sb,
-	void			*data,
-	int			silent)
-{
-	vnode_t			*rootvp;
-	struct vfs		*vfsp = vfs_allocate();
-	struct xfs_mount_args	*args = xfs_args_allocate(sb);
-	struct statfs		statvfs;
-	int			error;
-
-	vfsp->vfs_super = sb;
-	LINVFS_SET_VFS(sb, vfsp);
-	if (sb->s_flags & MS_RDONLY)
-		vfsp->vfs_flag |= VFS_RDONLY;
-	bhv_insert_all_vfsops(vfsp);
-
-	VFS_PARSEARGS(vfsp, (char *)data, args, 0, error);
-	if (error) {
-		bhv_remove_all_vfsops(vfsp, 1);
-		goto fail_vfsop;
-	}
-
-	sb_min_blocksize(sb, BBSIZE);
-	sb->s_qcop = &linvfs_qops;
-	sb->s_op = &linvfs_sops;
-
-	VFS_MOUNT(vfsp, args, NULL, error);
-	if (error) {
-		bhv_remove_all_vfsops(vfsp, 1);
-		goto fail_vfsop;
-	}
-
-	VFS_STATVFS(vfsp, &statvfs, NULL, error);
-	if (error)
-		goto fail_unmount;
-
-	sb->s_dirt = 1;
-	sb->s_magic = statvfs.f_type;
-	sb->s_blocksize = statvfs.f_bsize;
-	sb->s_blocksize_bits = ffs(statvfs.f_bsize) - 1;
-	sb->s_maxbytes = xfs_max_file_offset(sb->s_blocksize_bits);
-	set_posix_acl_flag(sb);
-
-	VFS_ROOT(vfsp, &rootvp, error);
-	if (error)
-		goto fail_unmount;
-
-	sb->s_root = d_alloc_root(LINVFS_GET_IP(rootvp));
-	if (!sb->s_root)
-		goto fail_vnrele;
-	if (is_bad_inode(sb->s_root->d_inode))
-		goto fail_vnrele;
-	if (linvfs_start_syncd(vfsp))
-		goto fail_vnrele;
-	vn_trace_exit(rootvp, __FUNCTION__, (inst_t *)__return_address);
-
-	kmem_free(args, sizeof(*args));
-	return sb;
-
-fail_vnrele:
-	if (sb->s_root) {
-		dput(sb->s_root);
-		sb->s_root = NULL;
-	} else {
-		VN_RELE(rootvp);
-	}
-
-fail_unmount:
-	VFS_UNMOUNT(vfsp, 0, NULL, error);
-
-fail_vfsop:
-	vfs_deallocate(vfsp);
-	kmem_free(args, sizeof(*args));
-	return NULL;
-}
-
-
-STATIC struct super_operations linvfs_sops = {
-	.alloc_inode		= linvfs_alloc_inode,
-	.destroy_inode		= linvfs_destroy_inode,
-	.write_inode		= linvfs_write_inode,
-	.clear_inode		= linvfs_clear_inode,
-	.put_super		= linvfs_put_super,
-	.write_super		= linvfs_write_super,
-	.sync_fs		= linvfs_sync_super,
-	.write_super_lockfs	= linvfs_freeze_fs,
-	.unlockfs		= linvfs_unfreeze_fs,
-	.statfs			= linvfs_statfs,
-	.remount_fs		= linvfs_remount,
-	.fh_to_dentry		= linvfs_fh_to_dentry,
-	.dentry_to_fh		= linvfs_dentry_to_fh,
-	.show_options		= linvfs_show_options,
-};
-
-STATIC struct quotactl_ops linvfs_qops = {
-	.get_xstate		= linvfs_getxstate,
-	.set_xstate		= linvfs_setxstate,
-	.get_xquota		= linvfs_getxquota,
-	.set_xquota		= linvfs_setxquota,
-};
-
-STATIC struct file_system_type xfs_fs_type = {
-	.owner			= THIS_MODULE,
-	.name			= "xfs",
-	.read_super		= linvfs_read_super,
-	.fs_flags		= FS_REQUIRES_DEV,
-};
-
-
-STATIC int __init
-init_xfs_fs( void )
-{
-	int			error;
-	struct sysinfo		si;
-	static char		message[] __initdata = KERN_INFO \
-		XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled\n";
-
-	printk(message);
-
-	si_meminfo(&si);
-	xfs_physmem = si.totalram;
-
-	ktrace_init(64);
-
-	error = init_inodecache();
-	if (error < 0)
-		goto undo_inodecache;
-
-	error = pagebuf_init();
-	if (error < 0)
-		goto undo_pagebuf;
-
-	vn_init();
-	xfs_init();
-	uuid_init();
-	vfs_initdmapi();
-	vfs_initquota();
-
-	error = register_filesystem(&xfs_fs_type);
-	if (error)
-		goto undo_register;
-	return 0;
-
-undo_register:
-	pagebuf_terminate();
-
-undo_pagebuf:
-	destroy_inodecache();
-
-undo_inodecache:
-	return error;
-}
-
-STATIC void __exit
-exit_xfs_fs( void )
-{
-	unregister_filesystem(&xfs_fs_type);
-	xfs_cleanup();
-	vfs_exitquota();
-	vfs_exitdmapi();
-	pagebuf_terminate();
-	destroy_inodecache();
-	ktrace_uninit();
-}
-
-module_init(init_xfs_fs);
-module_exit(exit_xfs_fs);
-
-MODULE_AUTHOR("Silicon Graphics, Inc.");
-MODULE_DESCRIPTION(XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled");
-MODULE_LICENSE("GPL");
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)