Merge commit 'v2.6.30-rc1' into perfcounters/core

Conflicts:
	arch/powerpc/include/asm/systbl.h
	arch/powerpc/include/asm/unistd.h
	include/linux/init_task.h

Merge reason: the conflicts are non-trivial: PowerPC placement
              of sys_perf_counter_open has to be mixed with the
	      new preadv/pwrite syscalls.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 654 insertions, 0 deletions

diff --git a/fs/nilfs2/ioctl.c b/fs/nilfs2/ioctl.c
new file mode 100644
index 000000000000..108d281ebca5
--- /dev/null
+++ b/fs/nilfs2/ioctl.c
@@ -0,0 +1,654 @@
+/*
+ * ioctl.c - NILFS ioctl operations.
+ *
+ * Copyright (C) 2007, 2008 Nippon Telegraph and Telephone Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Written by Koji Sato <koji@osrg.net>.
+ */
+
+#include <linux/fs.h>
+#include <linux/wait.h>
+#include <linux/smp_lock.h>	/* lock_kernel(), unlock_kernel() */
+#include <linux/capability.h>	/* capable() */
+#include <linux/uaccess.h>	/* copy_from_user(), copy_to_user() */
+#include <linux/nilfs2_fs.h>
+#include "nilfs.h"
+#include "segment.h"
+#include "bmap.h"
+#include "cpfile.h"
+#include "sufile.h"
+#include "dat.h"
+
+
+static int nilfs_ioctl_wrap_copy(struct the_nilfs *nilfs,
+				 struct nilfs_argv *argv, int dir,
+				 ssize_t (*dofunc)(struct the_nilfs *,
+						   __u64 *, int,
+						   void *, size_t, size_t))
+{
+	void *buf;
+	void __user *base = (void __user *)(unsigned long)argv->v_base;
+	size_t maxmembs, total, n;
+	ssize_t nr;
+	int ret, i;
+	__u64 pos, ppos;
+
+	if (argv->v_nmembs == 0)
+		return 0;
+
+	if (argv->v_size > PAGE_SIZE)
+		return -EINVAL;
+
+	buf = (void *)__get_free_pages(GFP_NOFS, 0);
+	if (unlikely(!buf))
+		return -ENOMEM;
+	maxmembs = PAGE_SIZE / argv->v_size;
+
+	ret = 0;
+	total = 0;
+	pos = argv->v_index;
+	for (i = 0; i < argv->v_nmembs; i += n) {
+		n = (argv->v_nmembs - i < maxmembs) ?
+			argv->v_nmembs - i : maxmembs;
+		if ((dir & _IOC_WRITE) &&
+		    copy_from_user(buf, base + argv->v_size * i,
+				   argv->v_size * n)) {
+			ret = -EFAULT;
+			break;
+		}
+		ppos = pos;
+		nr = dofunc(nilfs, &pos, argv->v_flags, buf, argv->v_size,
+			       n);
+		if (nr < 0) {
+			ret = nr;
+			break;
+		}
+		if ((dir & _IOC_READ) &&
+		    copy_to_user(base + argv->v_size * i, buf,
+				 argv->v_size * nr)) {
+			ret = -EFAULT;
+			break;
+		}
+		total += nr;
+		if ((size_t)nr < n)
+			break;
+		if (pos == ppos)
+			pos += n;
+	}
+	argv->v_nmembs = total;
+
+	free_pages((unsigned long)buf, 0);
+	return ret;
+}
+
+static int nilfs_ioctl_change_cpmode(struct inode *inode, struct file *filp,
+				     unsigned int cmd, void __user *argp)
+{
+	struct inode *cpfile = NILFS_SB(inode->i_sb)->s_nilfs->ns_cpfile;
+	struct nilfs_transaction_info ti;
+	struct nilfs_cpmode cpmode;
+	int ret;
+
+	if (!capable(CAP_SYS_ADMIN))
+		return -EPERM;
+	if (copy_from_user(&cpmode, argp, sizeof(cpmode)))
+		return -EFAULT;
+
+	nilfs_transaction_begin(inode->i_sb, &ti, 0);
+	ret = nilfs_cpfile_change_cpmode(
+		cpfile, cpmode.cm_cno, cpmode.cm_mode);
+	if (unlikely(ret < 0)) {
+		nilfs_transaction_abort(inode->i_sb);
+		return ret;
+	}
+	nilfs_transaction_commit(inode->i_sb); /* never fails */
+	return ret;
+}
+
+static int
+nilfs_ioctl_delete_checkpoint(struct inode *inode, struct file *filp,
+			      unsigned int cmd, void __user *argp)
+{
+	struct inode *cpfile = NILFS_SB(inode->i_sb)->s_nilfs->ns_cpfile;
+	struct nilfs_transaction_info ti;
+	__u64 cno;
+	int ret;
+
+	if (!capable(CAP_SYS_ADMIN))
+		return -EPERM;
+	if (copy_from_user(&cno, argp, sizeof(cno)))
+		return -EFAULT;
+
+	nilfs_transaction_begin(inode->i_sb, &ti, 0);
+	ret = nilfs_cpfile_delete_checkpoint(cpfile, cno);
+	if (unlikely(ret < 0)) {
+		nilfs_transaction_abort(inode->i_sb);
+		return ret;
+	}
+	nilfs_transaction_commit(inode->i_sb); /* never fails */
+	return ret;
+}
+
+static ssize_t
+nilfs_ioctl_do_get_cpinfo(struct the_nilfs *nilfs, __u64 *posp, int flags,
+			  void *buf, size_t size, size_t nmembs)
+{
+	return nilfs_cpfile_get_cpinfo(nilfs->ns_cpfile, posp, flags, buf,
+				       nmembs);
+}
+
+static int nilfs_ioctl_get_cpinfo(struct inode *inode, struct file *filp,
+				  unsigned int cmd, void __user *argp)
+{
+	struct the_nilfs *nilfs = NILFS_SB(inode->i_sb)->s_nilfs;
+	struct nilfs_argv argv;
+	int ret;
+
+	if (copy_from_user(&argv, argp, sizeof(argv)))
+		return -EFAULT;
+
+	down_read(&nilfs->ns_segctor_sem);
+	ret = nilfs_ioctl_wrap_copy(nilfs, &argv, _IOC_DIR(cmd),
+				    nilfs_ioctl_do_get_cpinfo);
+	up_read(&nilfs->ns_segctor_sem);
+	if (ret < 0)
+		return ret;
+
+	if (copy_to_user(argp, &argv, sizeof(argv)))
+		ret = -EFAULT;
+	return ret;
+}
+
+static int nilfs_ioctl_get_cpstat(struct inode *inode, struct file *filp,
+				  unsigned int cmd, void __user *argp)
+{
+	struct the_nilfs *nilfs = NILFS_SB(inode->i_sb)->s_nilfs;
+	struct nilfs_cpstat cpstat;
+	int ret;
+
+	down_read(&nilfs->ns_segctor_sem);
+	ret = nilfs_cpfile_get_stat(nilfs->ns_cpfile, &cpstat);
+	up_read(&nilfs->ns_segctor_sem);
+	if (ret < 0)
+		return ret;
+
+	if (copy_to_user(argp, &cpstat, sizeof(cpstat)))
+		ret = -EFAULT;
+	return ret;
+}
+
+static ssize_t
+nilfs_ioctl_do_get_suinfo(struct the_nilfs *nilfs, __u64 *posp, int flags,
+			  void *buf, size_t size, size_t nmembs)
+{
+	return nilfs_sufile_get_suinfo(nilfs->ns_sufile, *posp, buf, nmembs);
+}
+
+static int nilfs_ioctl_get_suinfo(struct inode *inode, struct file *filp,
+				  unsigned int cmd, void __user *argp)
+{
+	struct the_nilfs *nilfs = NILFS_SB(inode->i_sb)->s_nilfs;
+	struct nilfs_argv argv;
+	int ret;
+
+	if (copy_from_user(&argv, argp, sizeof(argv)))
+		return -EFAULT;
+
+	down_read(&nilfs->ns_segctor_sem);
+	ret = nilfs_ioctl_wrap_copy(nilfs, &argv, _IOC_DIR(cmd),
+				    nilfs_ioctl_do_get_suinfo);
+	up_read(&nilfs->ns_segctor_sem);
+	if (ret < 0)
+		return ret;
+
+	if (copy_to_user(argp, &argv, sizeof(argv)))
+		ret = -EFAULT;
+	return ret;
+}
+
+static int nilfs_ioctl_get_sustat(struct inode *inode, struct file *filp,
+				  unsigned int cmd, void __user *argp)
+{
+	struct the_nilfs *nilfs = NILFS_SB(inode->i_sb)->s_nilfs;
+	struct nilfs_sustat sustat;
+	int ret;
+
+	down_read(&nilfs->ns_segctor_sem);
+	ret = nilfs_sufile_get_stat(nilfs->ns_sufile, &sustat);
+	up_read(&nilfs->ns_segctor_sem);
+	if (ret < 0)
+		return ret;
+
+	if (copy_to_user(argp, &sustat, sizeof(sustat)))
+		ret = -EFAULT;
+	return ret;
+}
+
+static ssize_t
+nilfs_ioctl_do_get_vinfo(struct the_nilfs *nilfs, __u64 *posp, int flags,
+			 void *buf, size_t size, size_t nmembs)
+{
+	return nilfs_dat_get_vinfo(nilfs_dat_inode(nilfs), buf, nmembs);
+}
+
+static int nilfs_ioctl_get_vinfo(struct inode *inode, struct file *filp,
+				 unsigned int cmd, void __user *argp)
+{
+	struct the_nilfs *nilfs = NILFS_SB(inode->i_sb)->s_nilfs;
+	struct nilfs_argv argv;
+	int ret;
+
+	if (copy_from_user(&argv, argp, sizeof(argv)))
+		return -EFAULT;
+
+	down_read(&nilfs->ns_segctor_sem);
+	ret = nilfs_ioctl_wrap_copy(nilfs, &argv, _IOC_DIR(cmd),
+				    nilfs_ioctl_do_get_vinfo);
+	up_read(&nilfs->ns_segctor_sem);
+	if (ret < 0)
+		return ret;
+
+	if (copy_to_user(argp, &argv, sizeof(argv)))
+		ret = -EFAULT;
+	return ret;
+}
+
+static ssize_t
+nilfs_ioctl_do_get_bdescs(struct the_nilfs *nilfs, __u64 *posp, int flags,
+			  void *buf, size_t size, size_t nmembs)
+{
+	struct inode *dat = nilfs_dat_inode(nilfs);
+	struct nilfs_bmap *bmap = NILFS_I(dat)->i_bmap;
+	struct nilfs_bdesc *bdescs = buf;
+	int ret, i;
+
+	for (i = 0; i < nmembs; i++) {
+		ret = nilfs_bmap_lookup_at_level(bmap,
+						 bdescs[i].bd_offset,
+						 bdescs[i].bd_level + 1,
+						 &bdescs[i].bd_blocknr);
+		if (ret < 0) {
+			if (ret != -ENOENT)
+				return ret;
+			bdescs[i].bd_blocknr = 0;
+		}
+	}
+	return nmembs;
+}
+
+static int nilfs_ioctl_get_bdescs(struct inode *inode, struct file *filp,
+				  unsigned int cmd, void __user *argp)
+{
+	struct the_nilfs *nilfs = NILFS_SB(inode->i_sb)->s_nilfs;
+	struct nilfs_argv argv;
+	int ret;
+
+	if (copy_from_user(&argv, argp, sizeof(argv)))
+		return -EFAULT;
+
+	down_read(&nilfs->ns_segctor_sem);
+	ret = nilfs_ioctl_wrap_copy(nilfs, &argv, _IOC_DIR(cmd),
+				    nilfs_ioctl_do_get_bdescs);
+	up_read(&nilfs->ns_segctor_sem);
+	if (ret < 0)
+		return ret;
+
+	if (copy_to_user(argp, &argv, sizeof(argv)))
+		ret = -EFAULT;
+	return ret;
+}
+
+static int nilfs_ioctl_move_inode_block(struct inode *inode,
+					struct nilfs_vdesc *vdesc,
+					struct list_head *buffers)
+{
+	struct buffer_head *bh;
+	int ret;
+
+	if (vdesc->vd_flags == 0)
+		ret = nilfs_gccache_submit_read_data(
+			inode, vdesc->vd_offset, vdesc->vd_blocknr,
+			vdesc->vd_vblocknr, &bh);
+	else
+		ret = nilfs_gccache_submit_read_node(
+			inode, vdesc->vd_blocknr, vdesc->vd_vblocknr, &bh);
+
+	if (unlikely(ret < 0)) {
+		if (ret == -ENOENT)
+			printk(KERN_CRIT
+			       "%s: invalid virtual block address (%s): "
+			       "ino=%llu, cno=%llu, offset=%llu, "
+			       "blocknr=%llu, vblocknr=%llu\n",
+			       __func__, vdesc->vd_flags ? "node" : "data",
+			       (unsigned long long)vdesc->vd_ino,
+			       (unsigned long long)vdesc->vd_cno,
+			       (unsigned long long)vdesc->vd_offset,
+			       (unsigned long long)vdesc->vd_blocknr,
+			       (unsigned long long)vdesc->vd_vblocknr);
+		return ret;
+	}
+	bh->b_private = vdesc;
+	list_add_tail(&bh->b_assoc_buffers, buffers);
+	return 0;
+}
+
+static ssize_t
+nilfs_ioctl_do_move_blocks(struct the_nilfs *nilfs, __u64 *posp, int flags,
+			   void *buf, size_t size, size_t nmembs)
+{
+	struct inode *inode;
+	struct nilfs_vdesc *vdesc;
+	struct buffer_head *bh, *n;
+	LIST_HEAD(buffers);
+	ino_t ino;
+	__u64 cno;
+	int i, ret;
+
+	for (i = 0, vdesc = buf; i < nmembs; ) {
+		ino = vdesc->vd_ino;
+		cno = vdesc->vd_cno;
+		inode = nilfs_gc_iget(nilfs, ino, cno);
+		if (unlikely(inode == NULL)) {
+			ret = -ENOMEM;
+			goto failed;
+		}
+		do {
+			ret = nilfs_ioctl_move_inode_block(inode, vdesc,
+							   &buffers);
+			if (unlikely(ret < 0))
+				goto failed;
+			vdesc++;
+		} while (++i < nmembs &&
+			 vdesc->vd_ino == ino && vdesc->vd_cno == cno);
+	}
+
+	list_for_each_entry_safe(bh, n, &buffers, b_assoc_buffers) {
+		ret = nilfs_gccache_wait_and_mark_dirty(bh);
+		if (unlikely(ret < 0)) {
+			if (ret == -EEXIST) {
+				vdesc = bh->b_private;
+				printk(KERN_CRIT
+				       "%s: conflicting %s buffer: "
+				       "ino=%llu, cno=%llu, offset=%llu, "
+				       "blocknr=%llu, vblocknr=%llu\n",
+				       __func__,
+				       vdesc->vd_flags ? "node" : "data",
+				       (unsigned long long)vdesc->vd_ino,
+				       (unsigned long long)vdesc->vd_cno,
+				       (unsigned long long)vdesc->vd_offset,
+				       (unsigned long long)vdesc->vd_blocknr,
+				       (unsigned long long)vdesc->vd_vblocknr);
+			}
+			goto failed;
+		}
+		list_del_init(&bh->b_assoc_buffers);
+		bh->b_private = NULL;
+		brelse(bh);
+	}
+	return nmembs;
+
+ failed:
+	list_for_each_entry_safe(bh, n, &buffers, b_assoc_buffers) {
+		list_del_init(&bh->b_assoc_buffers);
+		bh->b_private = NULL;
+		brelse(bh);
+	}
+	return ret;
+}
+
+static inline int nilfs_ioctl_move_blocks(struct the_nilfs *nilfs,
+					  struct nilfs_argv *argv,
+					  int dir)
+{
+	return nilfs_ioctl_wrap_copy(nilfs, argv, dir,
+				     nilfs_ioctl_do_move_blocks);
+}
+
+static ssize_t
+nilfs_ioctl_do_delete_checkpoints(struct the_nilfs *nilfs, __u64 *posp,
+				  int flags, void *buf, size_t size,
+				  size_t nmembs)
+{
+	struct inode *cpfile = nilfs->ns_cpfile;
+	struct nilfs_period *periods = buf;
+	int ret, i;
+
+	for (i = 0; i < nmembs; i++) {
+		ret = nilfs_cpfile_delete_checkpoints(
+			cpfile, periods[i].p_start, periods[i].p_end);
+		if (ret < 0)
+			return ret;
+	}
+	return nmembs;
+}
+
+static inline int nilfs_ioctl_delete_checkpoints(struct the_nilfs *nilfs,
+						 struct nilfs_argv *argv,
+						 int dir)
+{
+	return nilfs_ioctl_wrap_copy(nilfs, argv, dir,
+				     nilfs_ioctl_do_delete_checkpoints);
+}
+
+static ssize_t
+nilfs_ioctl_do_free_vblocknrs(struct the_nilfs *nilfs, __u64 *posp, int flags,
+			      void *buf, size_t size, size_t nmembs)
+{
+	int ret = nilfs_dat_freev(nilfs_dat_inode(nilfs), buf, nmembs);
+
+	return (ret < 0) ? ret : nmembs;
+}
+
+static inline int nilfs_ioctl_free_vblocknrs(struct the_nilfs *nilfs,
+					     struct nilfs_argv *argv,
+					     int dir)
+{
+	return nilfs_ioctl_wrap_copy(nilfs, argv, dir,
+				     nilfs_ioctl_do_free_vblocknrs);
+}
+
+static ssize_t
+nilfs_ioctl_do_mark_blocks_dirty(struct the_nilfs *nilfs, __u64 *posp,
+				 int flags, void *buf, size_t size,
+				 size_t nmembs)
+{
+	struct inode *dat = nilfs_dat_inode(nilfs);
+	struct nilfs_bmap *bmap = NILFS_I(dat)->i_bmap;
+	struct nilfs_bdesc *bdescs = buf;
+	int ret, i;
+
+	for (i = 0; i < nmembs; i++) {
+		/* XXX: use macro or inline func to check liveness */
+		ret = nilfs_bmap_lookup_at_level(bmap,
+						 bdescs[i].bd_offset,
+						 bdescs[i].bd_level + 1,
+						 &bdescs[i].bd_blocknr);
+		if (ret < 0) {
+			if (ret != -ENOENT)
+				return ret;
+			bdescs[i].bd_blocknr = 0;
+		}
+		if (bdescs[i].bd_blocknr != bdescs[i].bd_oblocknr)
+			/* skip dead block */
+			continue;
+		if (bdescs[i].bd_level == 0) {
+			ret = nilfs_mdt_mark_block_dirty(dat,
+							 bdescs[i].bd_offset);
+			if (ret < 0) {
+				WARN_ON(ret == -ENOENT);
+				return ret;
+			}
+		} else {
+			ret = nilfs_bmap_mark(bmap, bdescs[i].bd_offset,
+					      bdescs[i].bd_level);
+			if (ret < 0) {
+				WARN_ON(ret == -ENOENT);
+				return ret;
+			}
+		}
+	}
+	return nmembs;
+}
+
+static inline int nilfs_ioctl_mark_blocks_dirty(struct the_nilfs *nilfs,
+						struct nilfs_argv *argv,
+						int dir)
+{
+	return nilfs_ioctl_wrap_copy(nilfs, argv, dir,
+				     nilfs_ioctl_do_mark_blocks_dirty);
+}
+
+static ssize_t
+nilfs_ioctl_do_free_segments(struct the_nilfs *nilfs, __u64 *posp, int flags,
+			     void *buf, size_t size, size_t nmembs)
+{
+	struct nilfs_sb_info *sbi = nilfs_get_writer(nilfs);
+	int ret;
+
+	if (unlikely(!sbi))
+		return -EROFS;
+	ret = nilfs_segctor_add_segments_to_be_freed(
+		NILFS_SC(sbi), buf, nmembs);
+	nilfs_put_writer(nilfs);
+
+	return (ret < 0) ? ret : nmembs;
+}
+
+static inline int nilfs_ioctl_free_segments(struct the_nilfs *nilfs,
+					     struct nilfs_argv *argv,
+					     int dir)
+{
+	return nilfs_ioctl_wrap_copy(nilfs, argv, dir,
+				     nilfs_ioctl_do_free_segments);
+}
+
+int nilfs_ioctl_prepare_clean_segments(struct the_nilfs *nilfs,
+				       void __user *argp)
+{
+	struct nilfs_argv argv[5];
+	const char *msg;
+	int dir, ret;
+
+	if (copy_from_user(argv, argp, sizeof(argv)))
+		return -EFAULT;
+
+	dir = _IOC_WRITE;
+	ret = nilfs_ioctl_move_blocks(nilfs, &argv[0], dir);
+	if (ret < 0) {
+		msg = "cannot read source blocks";
+		goto failed;
+	}
+	ret = nilfs_ioctl_delete_checkpoints(nilfs, &argv[1], dir);
+	if (ret < 0) {
+		/*
+		 * can safely abort because checkpoints can be removed
+		 * independently.
+		 */
+		msg = "cannot delete checkpoints";
+		goto failed;
+	}
+	ret = nilfs_ioctl_free_vblocknrs(nilfs, &argv[2], dir);
+	if (ret < 0) {
+		/*
+		 * can safely abort because DAT file is updated atomically
+		 * using a copy-on-write technique.
+		 */
+		msg = "cannot delete virtual blocks from DAT file";
+		goto failed;
+	}
+	ret = nilfs_ioctl_mark_blocks_dirty(nilfs, &argv[3], dir);
+	if (ret < 0) {
+		/*
+		 * can safely abort because the operation is nondestructive.
+		 */
+		msg = "cannot mark copying blocks dirty";
+		goto failed;
+	}
+	ret = nilfs_ioctl_free_segments(nilfs, &argv[4], dir);
+	if (ret < 0) {
+		/*
+		 * can safely abort because this operation is atomic.
+		 */
+		msg = "cannot set segments to be freed";
+		goto failed;
+	}
+	return 0;
+
+ failed:
+	nilfs_remove_all_gcinode(nilfs);
+	printk(KERN_ERR "NILFS: GC failed during preparation: %s: err=%d\n",
+	       msg, ret);
+	return ret;
+}
+
+static int nilfs_ioctl_clean_segments(struct inode *inode, struct file *filp,
+				      unsigned int cmd, void __user *argp)
+{
+	if (!capable(CAP_SYS_ADMIN))
+		return -EPERM;
+	return nilfs_clean_segments(inode->i_sb, argp);
+}
+
+static int nilfs_ioctl_sync(struct inode *inode, struct file *filp,
+			    unsigned int cmd, void __user *argp)
+{
+	__u64 cno;
+	int ret;
+
+	ret = nilfs_construct_segment(inode->i_sb);
+	if (ret < 0)
+		return ret;
+
+	if (argp != NULL) {
+		cno = NILFS_SB(inode->i_sb)->s_nilfs->ns_cno - 1;
+		if (copy_to_user(argp, &cno, sizeof(cno)))
+			return -EFAULT;
+	}
+	return 0;
+}
+
+long nilfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
+{
+	struct inode *inode = filp->f_dentry->d_inode;
+	void __user *argp = (void * __user *)arg;
+
+	switch (cmd) {
+	case NILFS_IOCTL_CHANGE_CPMODE:
+		return nilfs_ioctl_change_cpmode(inode, filp, cmd, argp);
+	case NILFS_IOCTL_DELETE_CHECKPOINT:
+		return nilfs_ioctl_delete_checkpoint(inode, filp, cmd, argp);
+	case NILFS_IOCTL_GET_CPINFO:
+		return nilfs_ioctl_get_cpinfo(inode, filp, cmd, argp);
+	case NILFS_IOCTL_GET_CPSTAT:
+		return nilfs_ioctl_get_cpstat(inode, filp, cmd, argp);
+	case NILFS_IOCTL_GET_SUINFO:
+		return nilfs_ioctl_get_suinfo(inode, filp, cmd, argp);
+	case NILFS_IOCTL_GET_SUSTAT:
+		return nilfs_ioctl_get_sustat(inode, filp, cmd, argp);
+	case NILFS_IOCTL_GET_VINFO:
+		/* XXX: rename to ??? */
+		return nilfs_ioctl_get_vinfo(inode, filp, cmd, argp);
+	case NILFS_IOCTL_GET_BDESCS:
+		return nilfs_ioctl_get_bdescs(inode, filp, cmd, argp);
+	case NILFS_IOCTL_CLEAN_SEGMENTS:
+		return nilfs_ioctl_clean_segments(inode, filp, cmd, argp);
+	case NILFS_IOCTL_SYNC:
+		return nilfs_ioctl_sync(inode, filp, cmd, argp);
+	default:
+		return -ENOTTY;
+	}
+}