Merge tag 'v4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux into for-next

Linux 4.10

1 files changed, 0 insertions, 801 deletions

diff --git a/fs/logfs/dir.c b/fs/logfs/dir.c
deleted file mode 100644
index c87ea52de3d9..000000000000
--- a/fs/logfs/dir.c
+++ /dev/null
@@ -1,801 +0,0 @@
-/*
- * fs/logfs/dir.c	- directory-related code
- *
- * As should be obvious for Linux kernel code, license is GPLv2
- *
- * Copyright (c) 2005-2008 Joern Engel <joern@logfs.org>
- */
-#include "logfs.h"
-#include <linux/slab.h>
-
-/*
- * Atomic dir operations
- *
- * Directory operations are by default not atomic.  Dentries and Inodes are
- * created/removed/altered in separate operations.  Therefore we need to do
- * a small amount of journaling.
- *
- * Create, link, mkdir, mknod and symlink all share the same function to do
- * the work: __logfs_create.  This function works in two atomic steps:
- * 1. allocate inode (remember in journal)
- * 2. allocate dentry (clear journal)
- *
- * As we can only get interrupted between the two, when the inode we just
- * created is simply stored in the anchor.  On next mount, if we were
- * interrupted, we delete the inode.  From a users point of view the
- * operation never happened.
- *
- * Unlink and rmdir also share the same function: unlink.  Again, this
- * function works in two atomic steps
- * 1. remove dentry (remember inode in journal)
- * 2. unlink inode (clear journal)
- *
- * And again, on the next mount, if we were interrupted, we delete the inode.
- * From a users point of view the operation succeeded.
- *
- * Rename is the real pain to deal with, harder than all the other methods
- * combined.  Depending on the circumstances we can run into three cases.
- * A "target rename" where the target dentry already existed, a "local
- * rename" where both parent directories are identical or a "cross-directory
- * rename" in the remaining case.
- *
- * Local rename is atomic, as the old dentry is simply rewritten with a new
- * name.
- *
- * Cross-directory rename works in two steps, similar to __logfs_create and
- * logfs_unlink:
- * 1. Write new dentry (remember old dentry in journal)
- * 2. Remove old dentry (clear journal)
- *
- * Here we remember a dentry instead of an inode.  On next mount, if we were
- * interrupted, we delete the dentry.  From a users point of view, the
- * operation succeeded.
- *
- * Target rename works in three atomic steps:
- * 1. Attach old inode to new dentry (remember old dentry and new inode)
- * 2. Remove old dentry (still remember the new inode)
- * 3. Remove victim inode
- *
- * Here we remember both an inode an a dentry.  If we get interrupted
- * between steps 1 and 2, we delete both the dentry and the inode.  If
- * we get interrupted between steps 2 and 3, we delete just the inode.
- * In either case, the remaining objects are deleted on next mount.  From
- * a users point of view, the operation succeeded.
- */
-
-static int write_dir(struct inode *dir, struct logfs_disk_dentry *dd,
-		loff_t pos)
-{
-	return logfs_inode_write(dir, dd, sizeof(*dd), pos, WF_LOCK, NULL);
-}
-
-static int write_inode(struct inode *inode)
-{
-	return __logfs_write_inode(inode, NULL, WF_LOCK);
-}
-
-static s64 dir_seek_data(struct inode *inode, s64 pos)
-{
-	s64 new_pos = logfs_seek_data(inode, pos);
-
-	return max(pos, new_pos - 1);
-}
-
-static int beyond_eof(struct inode *inode, loff_t bix)
-{
-	loff_t pos = bix << inode->i_sb->s_blocksize_bits;
-	return pos >= i_size_read(inode);
-}
-
-/*
- * Prime value was chosen to be roughly 256 + 26.  r5 hash uses 11,
- * so short names (len <= 9) don't even occupy the complete 32bit name
- * space.  A prime >256 ensures short names quickly spread the 32bit
- * name space.  Add about 26 for the estimated amount of information
- * of each character and pick a prime nearby, preferably a bit-sparse
- * one.
- */
-static u32 logfs_hash_32(const char *s, int len, u32 seed)
-{
-	u32 hash = seed;
-	int i;
-
-	for (i = 0; i < len; i++)
-		hash = hash * 293 + s[i];
-	return hash;
-}
-
-/*
- * We have to satisfy several conflicting requirements here.  Small
- * directories should stay fairly compact and not require too many
- * indirect blocks.  The number of possible locations for a given hash
- * should be small to make lookup() fast.  And we should try hard not
- * to overflow the 32bit name space or nfs and 32bit host systems will
- * be unhappy.
- *
- * So we use the following scheme.  First we reduce the hash to 0..15
- * and try a direct block.  If that is occupied we reduce the hash to
- * 16..255 and try an indirect block.  Same for 2x and 3x indirect
- * blocks.  Lastly we reduce the hash to 0x800_0000 .. 0xffff_ffff,
- * but use buckets containing eight entries instead of a single one.
- *
- * Using 16 entries should allow for a reasonable amount of hash
- * collisions, so the 32bit name space can be packed fairly tight
- * before overflowing.  Oh and currently we don't overflow but return
- * and error.
- *
- * How likely are collisions?  Doing the appropriate math is beyond me
- * and the Bronstein textbook.  But running a test program to brute
- * force collisions for a couple of days showed that on average the
- * first collision occurs after 598M entries, with 290M being the
- * smallest result.  Obviously 21 entries could already cause a
- * collision if all entries are carefully chosen.
- */
-static pgoff_t hash_index(u32 hash, int round)
-{
-	u32 i0_blocks = I0_BLOCKS;
-	u32 i1_blocks = I1_BLOCKS;
-	u32 i2_blocks = I2_BLOCKS;
-	u32 i3_blocks = I3_BLOCKS;
-
-	switch (round) {
-	case 0:
-		return hash % i0_blocks;
-	case 1:
-		return i0_blocks + hash % (i1_blocks - i0_blocks);
-	case 2:
-		return i1_blocks + hash % (i2_blocks - i1_blocks);
-	case 3:
-		return i2_blocks + hash % (i3_blocks - i2_blocks);
-	case 4 ... 19:
-		return i3_blocks + 16 * (hash % (((1<<31) - i3_blocks) / 16))
-			+ round - 4;
-	}
-	BUG();
-}
-
-static struct page *logfs_get_dd_page(struct inode *dir, struct dentry *dentry)
-{
-	const struct qstr *name = &dentry->d_name;
-	struct page *page;
-	struct logfs_disk_dentry *dd;
-	u32 hash = logfs_hash_32(name->name, name->len, 0);
-	pgoff_t index;
-	int round;
-
-	if (name->len > LOGFS_MAX_NAMELEN)
-		return ERR_PTR(-ENAMETOOLONG);
-
-	for (round = 0; round < 20; round++) {
-		index = hash_index(hash, round);
-
-		if (beyond_eof(dir, index))
-			return NULL;
-		if (!logfs_exist_block(dir, index))
-			continue;
-		page = read_cache_page(dir->i_mapping, index,
-				(filler_t *)logfs_readpage, NULL);
-		if (IS_ERR(page))
-			return page;
-		dd = kmap_atomic(page);
-		BUG_ON(dd->namelen == 0);
-
-		if (name->len != be16_to_cpu(dd->namelen) ||
-				memcmp(name->name, dd->name, name->len)) {
-			kunmap_atomic(dd);
-			put_page(page);
-			continue;
-		}
-
-		kunmap_atomic(dd);
-		return page;
-	}
-	return NULL;
-}
-
-static int logfs_remove_inode(struct inode *inode)
-{
-	int ret;
-
-	drop_nlink(inode);
-	ret = write_inode(inode);
-	LOGFS_BUG_ON(ret, inode->i_sb);
-	return ret;
-}
-
-static void abort_transaction(struct inode *inode, struct logfs_transaction *ta)
-{
-	if (logfs_inode(inode)->li_block)
-		logfs_inode(inode)->li_block->ta = NULL;
-	kfree(ta);
-}
-
-static int logfs_unlink(struct inode *dir, struct dentry *dentry)
-{
-	struct logfs_super *super = logfs_super(dir->i_sb);
-	struct inode *inode = d_inode(dentry);
-	struct logfs_transaction *ta;
-	struct page *page;
-	pgoff_t index;
-	int ret;
-
-	ta = kzalloc(sizeof(*ta), GFP_KERNEL);
-	if (!ta)
-		return -ENOMEM;
-
-	ta->state = UNLINK_1;
-	ta->ino = inode->i_ino;
-
-	inode->i_ctime = dir->i_ctime = dir->i_mtime = current_time(inode);
-
-	page = logfs_get_dd_page(dir, dentry);
-	if (!page) {
-		kfree(ta);
-		return -ENOENT;
-	}
-	if (IS_ERR(page)) {
-		kfree(ta);
-		return PTR_ERR(page);
-	}
-	index = page->index;
-	put_page(page);
-
-	mutex_lock(&super->s_dirop_mutex);
-	logfs_add_transaction(dir, ta);
-
-	ret = logfs_delete(dir, index, NULL);
-	if (!ret)
-		ret = write_inode(dir);
-
-	if (ret) {
-		abort_transaction(dir, ta);
-		printk(KERN_ERR"LOGFS: unable to delete inode\n");
-		goto out;
-	}
-
-	ta->state = UNLINK_2;
-	logfs_add_transaction(inode, ta);
-	ret = logfs_remove_inode(inode);
-out:
-	mutex_unlock(&super->s_dirop_mutex);
-	return ret;
-}
-
-static inline int logfs_empty_dir(struct inode *dir)
-{
-	u64 data;
-
-	data = logfs_seek_data(dir, 0) << dir->i_sb->s_blocksize_bits;
-	return data >= i_size_read(dir);
-}
-
-static int logfs_rmdir(struct inode *dir, struct dentry *dentry)
-{
-	struct inode *inode = d_inode(dentry);
-
-	if (!logfs_empty_dir(inode))
-		return -ENOTEMPTY;
-
-	return logfs_unlink(dir, dentry);
-}
-
-/* FIXME: readdir currently has it's own dir_walk code.  I don't see a good
- * way to combine the two copies */
-static int logfs_readdir(struct file *file, struct dir_context *ctx)
-{
-	struct inode *dir = file_inode(file);
-	loff_t pos;
-	struct page *page;
-	struct logfs_disk_dentry *dd;
-
-	if (ctx->pos < 0)
-		return -EINVAL;
-
-	if (!dir_emit_dots(file, ctx))
-		return 0;
-
-	pos = ctx->pos - 2;
-	BUG_ON(pos < 0);
-	for (;; pos++, ctx->pos++) {
-		bool full;
-		if (beyond_eof(dir, pos))
-			break;
-		if (!logfs_exist_block(dir, pos)) {
-			/* deleted dentry */
-			pos = dir_seek_data(dir, pos);
-			continue;
-		}
-		page = read_cache_page(dir->i_mapping, pos,
-				(filler_t *)logfs_readpage, NULL);
-		if (IS_ERR(page))
-			return PTR_ERR(page);
-		dd = kmap(page);
-		BUG_ON(dd->namelen == 0);
-
-		full = !dir_emit(ctx, (char *)dd->name,
-				be16_to_cpu(dd->namelen),
-				be64_to_cpu(dd->ino), dd->type);
-		kunmap(page);
-		put_page(page);
-		if (full)
-			break;
-	}
-	return 0;
-}
-
-static void logfs_set_name(struct logfs_disk_dentry *dd, const struct qstr *name)
-{
-	dd->namelen = cpu_to_be16(name->len);
-	memcpy(dd->name, name->name, name->len);
-}
-
-static struct dentry *logfs_lookup(struct inode *dir, struct dentry *dentry,
-		unsigned int flags)
-{
-	struct page *page;
-	struct logfs_disk_dentry *dd;
-	pgoff_t index;
-	u64 ino = 0;
-	struct inode *inode;
-
-	page = logfs_get_dd_page(dir, dentry);
-	if (IS_ERR(page))
-		return ERR_CAST(page);
-	if (!page) {
-		d_add(dentry, NULL);
-		return NULL;
-	}
-	index = page->index;
-	dd = kmap_atomic(page);
-	ino = be64_to_cpu(dd->ino);
-	kunmap_atomic(dd);
-	put_page(page);
-
-	inode = logfs_iget(dir->i_sb, ino);
-	if (IS_ERR(inode))
-		printk(KERN_ERR"LogFS: Cannot read inode #%llx for dentry (%lx, %lx)n",
-				ino, dir->i_ino, index);
-	return d_splice_alias(inode, dentry);
-}
-
-static void grow_dir(struct inode *dir, loff_t index)
-{
-	index = (index + 1) << dir->i_sb->s_blocksize_bits;
-	if (i_size_read(dir) < index)
-		i_size_write(dir, index);
-}
-
-static int logfs_write_dir(struct inode *dir, struct dentry *dentry,
-		struct inode *inode)
-{
-	struct page *page;
-	struct logfs_disk_dentry *dd;
-	u32 hash = logfs_hash_32(dentry->d_name.name, dentry->d_name.len, 0);
-	pgoff_t index;
-	int round, err;
-
-	for (round = 0; round < 20; round++) {
-		index = hash_index(hash, round);
-
-		if (logfs_exist_block(dir, index))
-			continue;
-		page = find_or_create_page(dir->i_mapping, index, GFP_KERNEL);
-		if (!page)
-			return -ENOMEM;
-
-		dd = kmap_atomic(page);
-		memset(dd, 0, sizeof(*dd));
-		dd->ino = cpu_to_be64(inode->i_ino);
-		dd->type = logfs_type(inode);
-		logfs_set_name(dd, &dentry->d_name);
-		kunmap_atomic(dd);
-
-		err = logfs_write_buf(dir, page, WF_LOCK);
-		unlock_page(page);
-		put_page(page);
-		if (!err)
-			grow_dir(dir, index);
-		return err;
-	}
-	/* FIXME: Is there a better return value?  In most cases neither
-	 * the filesystem nor the directory are full.  But we have had
-	 * too many collisions for this particular hash and no fallback.
-	 */
-	return -ENOSPC;
-}
-
-static int __logfs_create(struct inode *dir, struct dentry *dentry,
-		struct inode *inode, const char *dest, long destlen)
-{
-	struct logfs_super *super = logfs_super(dir->i_sb);
-	struct logfs_inode *li = logfs_inode(inode);
-	struct logfs_transaction *ta;
-	int ret;
-
-	ta = kzalloc(sizeof(*ta), GFP_KERNEL);
-	if (!ta) {
-		drop_nlink(inode);
-		iput(inode);
-		return -ENOMEM;
-	}
-
-	ta->state = CREATE_1;
-	ta->ino = inode->i_ino;
-	mutex_lock(&super->s_dirop_mutex);
-	logfs_add_transaction(inode, ta);
-
-	if (dest) {
-		/* symlink */
-		ret = logfs_inode_write(inode, dest, destlen, 0, WF_LOCK, NULL);
-		if (!ret)
-			ret = write_inode(inode);
-	} else {
-		/* creat/mkdir/mknod */
-		ret = write_inode(inode);
-	}
-	if (ret) {
-		abort_transaction(inode, ta);
-		li->li_flags |= LOGFS_IF_STILLBORN;
-		/* FIXME: truncate symlink */
-		drop_nlink(inode);
-		iput(inode);
-		goto out;
-	}
-
-	ta->state = CREATE_2;
-	logfs_add_transaction(dir, ta);
-	ret = logfs_write_dir(dir, dentry, inode);
-	/* sync directory */
-	if (!ret)
-		ret = write_inode(dir);
-
-	if (ret) {
-		logfs_del_transaction(dir, ta);
-		ta->state = CREATE_2;
-		logfs_add_transaction(inode, ta);
-		logfs_remove_inode(inode);
-		iput(inode);
-		goto out;
-	}
-	d_instantiate(dentry, inode);
-out:
-	mutex_unlock(&super->s_dirop_mutex);
-	return ret;
-}
-
-static int logfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
-{
-	struct inode *inode;
-
-	/*
-	 * FIXME: why do we have to fill in S_IFDIR, while the mode is
-	 * correct for mknod, creat, etc.?  Smells like the vfs *should*
-	 * do it for us but for some reason fails to do so.
-	 */
-	inode = logfs_new_inode(dir, S_IFDIR | mode);
-	if (IS_ERR(inode))
-		return PTR_ERR(inode);
-
-	inode->i_op = &logfs_dir_iops;
-	inode->i_fop = &logfs_dir_fops;
-
-	return __logfs_create(dir, dentry, inode, NULL, 0);
-}
-
-static int logfs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
-		bool excl)
-{
-	struct inode *inode;
-
-	inode = logfs_new_inode(dir, mode);
-	if (IS_ERR(inode))
-		return PTR_ERR(inode);
-
-	inode->i_op = &logfs_reg_iops;
-	inode->i_fop = &logfs_reg_fops;
-	inode->i_mapping->a_ops = &logfs_reg_aops;
-
-	return __logfs_create(dir, dentry, inode, NULL, 0);
-}
-
-static int logfs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode,
-		dev_t rdev)
-{
-	struct inode *inode;
-
-	if (dentry->d_name.len > LOGFS_MAX_NAMELEN)
-		return -ENAMETOOLONG;
-
-	inode = logfs_new_inode(dir, mode);
-	if (IS_ERR(inode))
-		return PTR_ERR(inode);
-
-	init_special_inode(inode, mode, rdev);
-
-	return __logfs_create(dir, dentry, inode, NULL, 0);
-}
-
-static int logfs_symlink(struct inode *dir, struct dentry *dentry,
-		const char *target)
-{
-	struct inode *inode;
-	size_t destlen = strlen(target) + 1;
-
-	if (destlen > dir->i_sb->s_blocksize)
-		return -ENAMETOOLONG;
-
-	inode = logfs_new_inode(dir, S_IFLNK | 0777);
-	if (IS_ERR(inode))
-		return PTR_ERR(inode);
-
-	inode->i_op = &page_symlink_inode_operations;
-	inode_nohighmem(inode);
-	inode->i_mapping->a_ops = &logfs_reg_aops;
-
-	return __logfs_create(dir, dentry, inode, target, destlen);
-}
-
-static int logfs_link(struct dentry *old_dentry, struct inode *dir,
-		struct dentry *dentry)
-{
-	struct inode *inode = d_inode(old_dentry);
-
-	inode->i_ctime = dir->i_ctime = dir->i_mtime = current_time(inode);
-	ihold(inode);
-	inc_nlink(inode);
-	mark_inode_dirty_sync(inode);
-
-	return __logfs_create(dir, dentry, inode, NULL, 0);
-}
-
-static int logfs_get_dd(struct inode *dir, struct dentry *dentry,
-		struct logfs_disk_dentry *dd, loff_t *pos)
-{
-	struct page *page;
-	void *map;
-
-	page = logfs_get_dd_page(dir, dentry);
-	if (IS_ERR(page))
-		return PTR_ERR(page);
-	*pos = page->index;
-	map = kmap_atomic(page);
-	memcpy(dd, map, sizeof(*dd));
-	kunmap_atomic(map);
-	put_page(page);
-	return 0;
-}
-
-static int logfs_delete_dd(struct inode *dir, loff_t pos)
-{
-	/*
-	 * Getting called with pos somewhere beyond eof is either a goofup
-	 * within this file or means someone maliciously edited the
-	 * (crc-protected) journal.
-	 */
-	BUG_ON(beyond_eof(dir, pos));
-	dir->i_ctime = dir->i_mtime = current_time(dir);
-	log_dir(" Delete dentry (%lx, %llx)\n", dir->i_ino, pos);
-	return logfs_delete(dir, pos, NULL);
-}
-
-/*
- * Cross-directory rename, target does not exist.  Just a little nasty.
- * Create a new dentry in the target dir, then remove the old dentry,
- * all the while taking care to remember our operation in the journal.
- */
-static int logfs_rename_cross(struct inode *old_dir, struct dentry *old_dentry,
-			      struct inode *new_dir, struct dentry *new_dentry)
-{
-	struct logfs_super *super = logfs_super(old_dir->i_sb);
-	struct logfs_disk_dentry dd;
-	struct logfs_transaction *ta;
-	loff_t pos;
-	int err;
-
-	/* 1. locate source dd */
-	err = logfs_get_dd(old_dir, old_dentry, &dd, &pos);
-	if (err)
-		return err;
-
-	ta = kzalloc(sizeof(*ta), GFP_KERNEL);
-	if (!ta)
-		return -ENOMEM;
-
-	ta->state = CROSS_RENAME_1;
-	ta->dir = old_dir->i_ino;
-	ta->pos = pos;
-
-	/* 2. write target dd */
-	mutex_lock(&super->s_dirop_mutex);
-	logfs_add_transaction(new_dir, ta);
-	err = logfs_write_dir(new_dir, new_dentry, d_inode(old_dentry));
-	if (!err)
-		err = write_inode(new_dir);
-
-	if (err) {
-		super->s_rename_dir = 0;
-		super->s_rename_pos = 0;
-		abort_transaction(new_dir, ta);
-		goto out;
-	}
-
-	/* 3. remove source dd */
-	ta->state = CROSS_RENAME_2;
-	logfs_add_transaction(old_dir, ta);
-	err = logfs_delete_dd(old_dir, pos);
-	if (!err)
-		err = write_inode(old_dir);
-	LOGFS_BUG_ON(err, old_dir->i_sb);
-out:
-	mutex_unlock(&super->s_dirop_mutex);
-	return err;
-}
-
-static int logfs_replace_inode(struct inode *dir, struct dentry *dentry,
-		struct logfs_disk_dentry *dd, struct inode *inode)
-{
-	loff_t pos;
-	int err;
-
-	err = logfs_get_dd(dir, dentry, dd, &pos);
-	if (err)
-		return err;
-	dd->ino = cpu_to_be64(inode->i_ino);
-	dd->type = logfs_type(inode);
-
-	err = write_dir(dir, dd, pos);
-	if (err)
-		return err;
-	log_dir("Replace dentry (%lx, %llx) %s -> %llx\n", dir->i_ino, pos,
-			dd->name, be64_to_cpu(dd->ino));
-	return write_inode(dir);
-}
-
-/* Target dentry exists - the worst case.  We need to attach the source
- * inode to the target dentry, then remove the orphaned target inode and
- * source dentry.
- */
-static int logfs_rename_target(struct inode *old_dir, struct dentry *old_dentry,
-			       struct inode *new_dir, struct dentry *new_dentry)
-{
-	struct logfs_super *super = logfs_super(old_dir->i_sb);
-	struct inode *old_inode = d_inode(old_dentry);
-	struct inode *new_inode = d_inode(new_dentry);
-	int isdir = S_ISDIR(old_inode->i_mode);
-	struct logfs_disk_dentry dd;
-	struct logfs_transaction *ta;
-	loff_t pos;
-	int err;
-
-	BUG_ON(isdir != S_ISDIR(new_inode->i_mode));
-	if (isdir) {
-		if (!logfs_empty_dir(new_inode))
-			return -ENOTEMPTY;
-	}
-
-	/* 1. locate source dd */
-	err = logfs_get_dd(old_dir, old_dentry, &dd, &pos);
-	if (err)
-		return err;
-
-	ta = kzalloc(sizeof(*ta), GFP_KERNEL);
-	if (!ta)
-		return -ENOMEM;
-
-	ta->state = TARGET_RENAME_1;
-	ta->dir = old_dir->i_ino;
-	ta->pos = pos;
-	ta->ino = new_inode->i_ino;
-
-	/* 2. attach source inode to target dd */
-	mutex_lock(&super->s_dirop_mutex);
-	logfs_add_transaction(new_dir, ta);
-	err = logfs_replace_inode(new_dir, new_dentry, &dd, old_inode);
-	if (err) {
-		super->s_rename_dir = 0;
-		super->s_rename_pos = 0;
-		super->s_victim_ino = 0;
-		abort_transaction(new_dir, ta);
-		goto out;
-	}
-
-	/* 3. remove source dd */
-	ta->state = TARGET_RENAME_2;
-	logfs_add_transaction(old_dir, ta);
-	err = logfs_delete_dd(old_dir, pos);
-	if (!err)
-		err = write_inode(old_dir);
-	LOGFS_BUG_ON(err, old_dir->i_sb);
-
-	/* 4. remove target inode */
-	ta->state = TARGET_RENAME_3;
-	logfs_add_transaction(new_inode, ta);
-	err = logfs_remove_inode(new_inode);
-
-out:
-	mutex_unlock(&super->s_dirop_mutex);
-	return err;
-}
-
-static int logfs_rename(struct inode *old_dir, struct dentry *old_dentry,
-			struct inode *new_dir, struct dentry *new_dentry,
-			unsigned int flags)
-{
-	if (flags & ~RENAME_NOREPLACE)
-		return -EINVAL;
-
-	if (d_really_is_positive(new_dentry))
-		return logfs_rename_target(old_dir, old_dentry,
-					   new_dir, new_dentry);
-	return logfs_rename_cross(old_dir, old_dentry, new_dir, new_dentry);
-}
-
-/* No locking done here, as this is called before .get_sb() returns. */
-int logfs_replay_journal(struct super_block *sb)
-{
-	struct logfs_super *super = logfs_super(sb);
-	struct inode *inode;
-	u64 ino, pos;
-	int err;
-
-	if (super->s_victim_ino) {
-		/* delete victim inode */
-		ino = super->s_victim_ino;
-		printk(KERN_INFO"LogFS: delete unmapped inode #%llx\n", ino);
-		inode = logfs_iget(sb, ino);
-		if (IS_ERR(inode))
-			goto fail;
-
-		LOGFS_BUG_ON(i_size_read(inode) > 0, sb);
-		super->s_victim_ino = 0;
-		err = logfs_remove_inode(inode);
-		iput(inode);
-		if (err) {
-			super->s_victim_ino = ino;
-			goto fail;
-		}
-	}
-	if (super->s_rename_dir) {
-		/* delete old dd from rename */
-		ino = super->s_rename_dir;
-		pos = super->s_rename_pos;
-		printk(KERN_INFO"LogFS: delete unbacked dentry (%llx, %llx)\n",
-				ino, pos);
-		inode = logfs_iget(sb, ino);
-		if (IS_ERR(inode))
-			goto fail;
-
-		super->s_rename_dir = 0;
-		super->s_rename_pos = 0;
-		err = logfs_delete_dd(inode, pos);
-		iput(inode);
-		if (err) {
-			super->s_rename_dir = ino;
-			super->s_rename_pos = pos;
-			goto fail;
-		}
-	}
-	return 0;
-fail:
-	LOGFS_BUG(sb);
-	return -EIO;
-}
-
-const struct inode_operations logfs_dir_iops = {
-	.create		= logfs_create,
-	.link		= logfs_link,
-	.lookup		= logfs_lookup,
-	.mkdir		= logfs_mkdir,
-	.mknod		= logfs_mknod,
-	.rename		= logfs_rename,
-	.rmdir		= logfs_rmdir,
-	.symlink	= logfs_symlink,
-	.unlink		= logfs_unlink,
-};
-const struct file_operations logfs_dir_fops = {
-	.fsync		= logfs_fsync,
-	.unlocked_ioctl	= logfs_ioctl,
-	.iterate_shared	= logfs_readdir,
-	.read		= generic_read_dir,
-	.llseek		= generic_file_llseek,
-};