Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull VFS changes from Al Viro:
 "First pile out of several (there _definitely_ will be more).  Stuff in
  this one:

   - unification of d_splice_alias()/d_materialize_unique()

   - iov_iter rewrite

   - killing a bunch of ->f_path.dentry users (and f_dentry macro).

     Getting that completed will make life much simpler for
     unionmount/overlayfs, since then we'll be able to limit the places
     sensitive to file _dentry_ to reasonably few.  Which allows to have
     file_inode(file) pointing to inode in a covered layer, with dentry
     pointing to (negative) dentry in union one.

     Still not complete, but much closer now.

   - crapectomy in lustre (dead code removal, mostly)

   - "let's make seq_printf return nothing" preparations

   - assorted cleanups and fixes

  There _definitely_ will be more piles"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (63 commits)
  copy_from_iter_nocache()
  new helper: iov_iter_kvec()
  csum_and_copy_..._iter()
  iov_iter.c: handle ITER_KVEC directly
  iov_iter.c: convert copy_to_iter() to iterate_and_advance
  iov_iter.c: convert copy_from_iter() to iterate_and_advance
  iov_iter.c: get rid of bvec_copy_page_{to,from}_iter()
  iov_iter.c: convert iov_iter_zero() to iterate_and_advance
  iov_iter.c: convert iov_iter_get_pages_alloc() to iterate_all_kinds
  iov_iter.c: convert iov_iter_get_pages() to iterate_all_kinds
  iov_iter.c: convert iov_iter_npages() to iterate_all_kinds
  iov_iter.c: iterate_and_advance
  iov_iter.c: macros for iterating over iov_iter
  kill f_dentry macro
  dcache: fix kmemcheck warning in switch_names
  new helper: audit_file()
  nfsd_vfs_write(): use file_inode()
  ncpfs: use file_inode()
  kill f_dentry uses
  lockd: get rid of ->f_path.dentry->d_sb
  ...

1 files changed, 16 insertions, 26 deletions

diff --git a/fs/autofs4/expire.c b/fs/autofs4/expire.c
index 683a5b9ce22a..bfdbaba9c2ba 100644
--- a/fs/autofs4/expire.c
+++ b/fs/autofs4/expire.c
@@ -41,8 +41,7 @@ static int autofs4_mount_busy(struct vfsmount *mnt, struct dentry *dentry)
 	struct path path = {.mnt = mnt, .dentry = dentry};
 	int status = 1;
 
-	DPRINTK("dentry %p %.*s",
-		dentry, (int)dentry->d_name.len, dentry->d_name.name);
+	DPRINTK("dentry %p %pd", dentry, dentry);
 
 	path_get(&path);
 
@@ -85,7 +84,7 @@ static struct dentry *get_next_positive_subdir(struct dentry *prev,
 	spin_lock(&root->d_lock);
 
 	if (prev)
-		next = prev->d_u.d_child.next;
+		next = prev->d_child.next;
 	else {
 		prev = dget_dlock(root);
 		next = prev->d_subdirs.next;
@@ -99,13 +98,13 @@ cont:
 		return NULL;
 	}
 
-	q = list_entry(next, struct dentry, d_u.d_child);
+	q = list_entry(next, struct dentry, d_child);
 
 	spin_lock_nested(&q->d_lock, DENTRY_D_LOCK_NESTED);
 	/* Already gone or negative dentry (under construction) - try next */
 	if (!d_count(q) || !simple_positive(q)) {
 		spin_unlock(&q->d_lock);
-		next = q->d_u.d_child.next;
+		next = q->d_child.next;
 		goto cont;
 	}
 	dget_dlock(q);
@@ -155,13 +154,13 @@ again:
 				goto relock;
 			}
 			spin_unlock(&p->d_lock);
-			next = p->d_u.d_child.next;
+			next = p->d_child.next;
 			p = parent;
 			if (next != &parent->d_subdirs)
 				break;
 		}
 	}
-	ret = list_entry(next, struct dentry, d_u.d_child);
+	ret = list_entry(next, struct dentry, d_child);
 
 	spin_lock_nested(&ret->d_lock, DENTRY_D_LOCK_NESTED);
 	/* Negative dentry - try next */
@@ -192,8 +191,7 @@ static int autofs4_direct_busy(struct vfsmount *mnt,
 				unsigned long timeout,
 				int do_now)
 {
-	DPRINTK("top %p %.*s",
-		top, (int) top->d_name.len, top->d_name.name);
+	DPRINTK("top %p %pd", top, top);
 
 	/* If it's busy update the expiry counters */
 	if (!may_umount_tree(mnt)) {
@@ -221,8 +219,7 @@ static int autofs4_tree_busy(struct vfsmount *mnt,
 	struct autofs_info *top_ino = autofs4_dentry_ino(top);
 	struct dentry *p;
 
-	DPRINTK("top %p %.*s",
-		top, (int)top->d_name.len, top->d_name.name);
+	DPRINTK("top %p %pd", top, top);
 
 	/* Negative dentry - give up */
 	if (!simple_positive(top))
@@ -230,8 +227,7 @@ static int autofs4_tree_busy(struct vfsmount *mnt,
 
 	p = NULL;
 	while ((p = get_next_positive_dentry(p, top))) {
-		DPRINTK("dentry %p %.*s",
-			p, (int) p->d_name.len, p->d_name.name);
+		DPRINTK("dentry %p %pd", p, p);
 
 		/*
 		 * Is someone visiting anywhere in the subtree ?
@@ -277,13 +273,11 @@ static struct dentry *autofs4_check_leaves(struct vfsmount *mnt,
 {
 	struct dentry *p;
 
-	DPRINTK("parent %p %.*s",
-		parent, (int)parent->d_name.len, parent->d_name.name);
+	DPRINTK("parent %p %pd", parent, parent);
 
 	p = NULL;
 	while ((p = get_next_positive_dentry(p, parent))) {
-		DPRINTK("dentry %p %.*s",
-			p, (int) p->d_name.len, p->d_name.name);
+		DPRINTK("dentry %p %pd", p, p);
 
 		if (d_mountpoint(p)) {
 			/* Can we umount this guy */
@@ -368,8 +362,7 @@ static struct dentry *should_expire(struct dentry *dentry,
 	 *	   offset (autofs-5.0+).
 	 */
 	if (d_mountpoint(dentry)) {
-		DPRINTK("checking mountpoint %p %.*s",
-			dentry, (int)dentry->d_name.len, dentry->d_name.name);
+		DPRINTK("checking mountpoint %p %pd", dentry, dentry);
 
 		/* Can we umount this guy */
 		if (autofs4_mount_busy(mnt, dentry))
@@ -382,8 +375,7 @@ static struct dentry *should_expire(struct dentry *dentry,
 	}
 
 	if (dentry->d_inode && S_ISLNK(dentry->d_inode->i_mode)) {
-		DPRINTK("checking symlink %p %.*s",
-			dentry, (int)dentry->d_name.len, dentry->d_name.name);
+		DPRINTK("checking symlink %p %pd", dentry, dentry);
 		/*
 		 * A symlink can't be "busy" in the usual sense so
 		 * just check last used for expire timeout.
@@ -479,8 +471,7 @@ struct dentry *autofs4_expire_indirect(struct super_block *sb,
 	return NULL;
 
 found:
-	DPRINTK("returning %p %.*s",
-		expired, (int)expired->d_name.len, expired->d_name.name);
+	DPRINTK("returning %p %pd", expired, expired);
 	ino->flags |= AUTOFS_INF_EXPIRING;
 	smp_mb();
 	ino->flags &= ~AUTOFS_INF_NO_RCU;
@@ -489,7 +480,7 @@ found:
 	spin_lock(&sbi->lookup_lock);
 	spin_lock(&expired->d_parent->d_lock);
 	spin_lock_nested(&expired->d_lock, DENTRY_D_LOCK_NESTED);
-	list_move(&expired->d_parent->d_subdirs, &expired->d_u.d_child);
+	list_move(&expired->d_parent->d_subdirs, &expired->d_child);
 	spin_unlock(&expired->d_lock);
 	spin_unlock(&expired->d_parent->d_lock);
 	spin_unlock(&sbi->lookup_lock);
@@ -512,8 +503,7 @@ int autofs4_expire_wait(struct dentry *dentry, int rcu_walk)
 	if (ino->flags & AUTOFS_INF_EXPIRING) {
 		spin_unlock(&sbi->fs_lock);
 
-		DPRINTK("waiting for expire %p name=%.*s",
-			 dentry, dentry->d_name.len, dentry->d_name.name);
+		DPRINTK("waiting for expire %p name=%pd", dentry, dentry);
 
 		status = autofs4_wait(sbi, dentry, NFY_NONE);
 		wait_for_completion(&ino->expire_complete);