Merge branch 'work.namei' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

[platform/kernel/linux-starfive.git] / Documentation / filesystems / porting.rst

diff --git a/Documentation/filesystems/porting.rst b/Documentation/filesystems/porting.rst
index 9bb2b35..bf19fd6 100644 (file)
--- a/Documentation/filesystems/porting.rst
+++ b/Documentation/filesystems/porting.rst
@@ -895,6 +895,15 @@ whereas previously it could be paired with mnt_drop_write() as well.
 
 **mandatory**
 
+iov_iter_copy_from_user_atomic() is gone; use copy_page_from_iter_atomic().
+The difference is copy_page_from_iter_atomic() advances the iterator and
+you don't need iov_iter_advance() after it.  However, if you decide to use
+only a part of obtained data, you should do iov_iter_revert().
+
+---
+
+**mandatory**
+
 Calling conventions for file_open_root() changed; now it takes struct path *
 instead of passing mount and dentry separately.  For callers that used to
 pass <mnt, mnt->mnt_root> pair (i.e. the root of given mount), a new helper