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

Pull vfs updates from Al Viro:
 "This the bunch that sat in -next + lock_parent() fix.  This is the
  minimal set; there's more pending stuff.

  In particular, I really hope to get acct.c fixes merged this cycle -
  we need that to deal sanely with delayed-mntput stuff.  In the next
  pile, hopefully - that series is fairly short and localized
  (kernel/acct.c, fs/super.c and fs/namespace.c).  In this pile: more
  iov_iter work.  Most of prereqs for ->splice_write with sane locking
  order are there and Kent's dio rewrite would also fit nicely on top of
  this pile"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (70 commits)
  lock_parent: don't step on stale ->d_parent of all-but-freed one
  kill generic_file_splice_write()
  ceph: switch to iter_file_splice_write()
  shmem: switch to iter_file_splice_write()
  nfs: switch to iter_splice_write_file()
  fs/splice.c: remove unneeded exports
  ocfs2: switch to iter_file_splice_write()
  ->splice_write() via ->write_iter()
  bio_vec-backed iov_iter
  optimize copy_page_{to,from}_iter()
  bury generic_file_aio_{read,write}
  lustre: get rid of messing with iovecs
  ceph: switch to ->write_iter()
  ceph_sync_direct_write: stop poking into iov_iter guts
  ceph_sync_read: stop poking into iov_iter guts
  new helper: copy_page_from_iter()
  fuse: switch to ->write_iter()
  btrfs: switch to ->write_iter()
  ocfs2: switch to ->write_iter()
  xfs: switch to ->write_iter()
  ...

2 files changed, 13 insertions, 14 deletions

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index c1fb6dd10911..0924521306b4 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -1017,10 +1017,9 @@ static int f2fs_write_end(struct file *file,
 }
 
 static int check_direct_IO(struct inode *inode, int rw,
-		const struct iovec *iov, loff_t offset, unsigned long nr_segs)
+		struct iov_iter *iter, loff_t offset)
 {
 	unsigned blocksize_mask = inode->i_sb->s_blocksize - 1;
-	int i;
 
 	if (rw == READ)
 		return 0;
@@ -1028,14 +1027,14 @@ static int check_direct_IO(struct inode *inode, int rw,
 	if (offset & blocksize_mask)
 		return -EINVAL;
 
-	for (i = 0; i < nr_segs; i++)
-		if (iov[i].iov_len & blocksize_mask)
-			return -EINVAL;
+	if (iov_iter_alignment(iter) & blocksize_mask)
+		return -EINVAL;
+
 	return 0;
 }
 
 static ssize_t f2fs_direct_IO(int rw, struct kiocb *iocb,
-		const struct iovec *iov, loff_t offset, unsigned long nr_segs)
+		struct iov_iter *iter, loff_t offset)
 {
 	struct file *file = iocb->ki_filp;
 	struct inode *inode = file->f_mapping->host;
@@ -1044,14 +1043,14 @@ static ssize_t f2fs_direct_IO(int rw, struct kiocb *iocb,
 	if (f2fs_has_inline_data(inode))
 		return 0;
 
-	if (check_direct_IO(inode, rw, iov, offset, nr_segs))
+	if (check_direct_IO(inode, rw, iter, offset))
 		return 0;
 
 	/* clear fsync mark to recover these blocks */
 	fsync_mark_clear(F2FS_SB(inode->i_sb), inode->i_ino);
 
-	return blockdev_direct_IO(rw, iocb, inode, iov, offset, nr_segs,
-							get_data_block);
+	return blockdev_direct_IO(rw, iocb, inode, iter, offset,
+				  get_data_block);
 }
 
 static void f2fs_invalidate_data_page(struct page *page, unsigned int offset,
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 9c49c593d8eb..c58e33075719 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -808,10 +808,10 @@ long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 
 const struct file_operations f2fs_file_operations = {
 	.llseek		= f2fs_llseek,
-	.read		= do_sync_read,
-	.write		= do_sync_write,
-	.aio_read	= generic_file_aio_read,
-	.aio_write	= generic_file_aio_write,
+	.read		= new_sync_read,
+	.write		= new_sync_write,
+	.read_iter	= generic_file_read_iter,
+	.write_iter	= generic_file_write_iter,
 	.open		= generic_file_open,
 	.mmap		= f2fs_file_mmap,
 	.fsync		= f2fs_sync_file,
@@ -821,5 +821,5 @@ const struct file_operations f2fs_file_operations = {
 	.compat_ioctl	= f2fs_compat_ioctl,
 #endif
 	.splice_read	= generic_file_splice_read,
-	.splice_write	= generic_file_splice_write,
+	.splice_write	= iter_file_splice_write,
 };