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

Pull VFS patches (part 1) from Al Viro:
 "The major change in this pile is ->readdir() replacement with
  ->iterate(), dealing with ->f_pos races in ->readdir() instances for
  good.

  There's a lot more, but I'd prefer to split the pull request into
  several stages and this is the first obvious cutoff point."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (67 commits)
  [readdir] constify ->actor
  [readdir] ->readdir() is gone
  [readdir] convert ecryptfs
  [readdir] convert coda
  [readdir] convert ocfs2
  [readdir] convert fatfs
  [readdir] convert xfs
  [readdir] convert btrfs
  [readdir] convert hostfs
  [readdir] convert afs
  [readdir] convert ncpfs
  [readdir] convert hfsplus
  [readdir] convert hfs
  [readdir] convert befs
  [readdir] convert cifs
  [readdir] convert freevxfs
  [readdir] convert fuse
  [readdir] convert hpfs
  reiserfs: switch reiserfs_readdir_dentry to inode
  reiserfs: is_privroot_deh() needs only directory inode, actually
  ...

1 files changed, 16 insertions, 17 deletions

diff --git a/fs/reiserfs/xattr.c b/fs/reiserfs/xattr.c
index 821bcf70e467..c69cdd749f09 100644
--- a/fs/reiserfs/xattr.c
+++ b/fs/reiserfs/xattr.c
@@ -171,6 +171,7 @@ static struct dentry *open_xa_dir(const struct inode *inode, int flags)
  * modifying extended attributes. This includes operations such as permissions
  * or ownership changes, object deletions, etc. */
 struct reiserfs_dentry_buf {
+	struct dir_context ctx;
 	struct dentry *xadir;
 	int count;
 	struct dentry *dentries[8];
@@ -223,9 +224,8 @@ static int reiserfs_for_each_xattr(struct inode *inode,
 {
 	struct dentry *dir;
 	int i, err = 0;
-	loff_t pos = 0;
 	struct reiserfs_dentry_buf buf = {
-		.count = 0,
+		.ctx.actor = fill_with_dentries,
 	};
 
 	/* Skip out, an xattr has no xattrs associated with it */
@@ -249,29 +249,27 @@ static int reiserfs_for_each_xattr(struct inode *inode,
 	reiserfs_write_lock(inode->i_sb);
 
 	buf.xadir = dir;
-	err = reiserfs_readdir_dentry(dir, &buf, fill_with_dentries, &pos);
-	while ((err == 0 || err == -ENOSPC) && buf.count) {
-		err = 0;
-
-		for (i = 0; i < buf.count && buf.dentries[i]; i++) {
-			int lerr = 0;
+	while (1) {
+		err = reiserfs_readdir_inode(dir->d_inode, &buf.ctx);
+		if (err)
+			break;
+		if (!buf.count)
+			break;
+		for (i = 0; !err && i < buf.count && buf.dentries[i]; i++) {
 			struct dentry *dentry = buf.dentries[i];
 
-			if (err == 0 && !S_ISDIR(dentry->d_inode->i_mode))
-				lerr = action(dentry, data);
+			if (!S_ISDIR(dentry->d_inode->i_mode))
+				err = action(dentry, data);
 
 			dput(dentry);
 			buf.dentries[i] = NULL;
-			err = lerr ?: err;
 		}
+		if (err)
+			break;
 		buf.count = 0;
-		if (!err)
-			err = reiserfs_readdir_dentry(dir, &buf,
-						      fill_with_dentries, &pos);
 	}
 	mutex_unlock(&dir->d_inode->i_mutex);
 
-	/* Clean up after a failed readdir */
 	cleanup_dentry_buf(&buf);
 
 	if (!err) {
@@ -800,6 +798,7 @@ int reiserfs_removexattr(struct dentry *dentry, const char *name)
 }
 
 struct listxattr_buf {
+	struct dir_context ctx;
 	size_t size;
 	size_t pos;
 	char *buf;
@@ -845,8 +844,8 @@ ssize_t reiserfs_listxattr(struct dentry * dentry, char *buffer, size_t size)
 {
 	struct dentry *dir;
 	int err = 0;
-	loff_t pos = 0;
 	struct listxattr_buf buf = {
+		.ctx.actor = listxattr_filler,
 		.dentry = dentry,
 		.buf = buffer,
 		.size = buffer ? size : 0,
@@ -868,7 +867,7 @@ ssize_t reiserfs_listxattr(struct dentry * dentry, char *buffer, size_t size)
 	}
 
 	mutex_lock_nested(&dir->d_inode->i_mutex, I_MUTEX_XATTR);
-	err = reiserfs_readdir_dentry(dir, &buf, listxattr_filler, &pos);
+	err = reiserfs_readdir_inode(dir->d_inode, &buf.ctx);
 	mutex_unlock(&dir->d_inode->i_mutex);
 
 	if (!err)