Re: [PATCH 3/3] fs: Fix remaining filesystems to wait for stable page writeback

Fix up the filesystems that provide their own ->page_mkwrite handlers to
provide stable page writes if necessary.

Signed-off-by: Darrick J. Wong <redacted>
---
 fs/9p/vfs_file.c |    1 +
 fs/afs/write.c   |    4 ++--
 fs/ceph/addr.c   |    1 +
 fs/cifs/file.c   |    1 +
 fs/ocfs2/mmap.c  |    1 +
 fs/ubifs/file.c  |    4 ++--
 6 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c
index c2483e9..aa253f0 100644
--- a/fs/9p/vfs_file.c
+++ b/fs/9p/vfs_file.c

@@ -620,6 +620,7 @@ v9fs_vm_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
 	lock_page(page);
 	if (page->mapping != inode->i_mapping)
 		goto out_unlock;
+	wait_on_stable_page_write(page);
 
 	return VM_FAULT_LOCKED;
 out_unlock:

diff --git a/fs/afs/write.c b/fs/afs/write.c
index 9aa52d9..39eb2a4 100644
--- a/fs/afs/write.c
+++ b/fs/afs/write.c

@@ -758,7 +758,7 @@ int afs_page_mkwrite(struct vm_area_struct *vma, struct page *page)
 #ifdef CONFIG_AFS_FSCACHE
 	fscache_wait_on_page_write(vnode->cache, page);
 #endif
-
+	wait_on_stable_page_write(page);
 	_leave(" = 0");
-	return 0;
+	return VM_FAULT_LOCKED;
 }

diff --git a/fs/ocfs2/mmap.c b/fs/ocfs2/mmap.c
index 47a87dd..a0027b1 100644
--- a/fs/ocfs2/mmap.c
+++ b/fs/ocfs2/mmap.c

@@ -124,6 +124,7 @@ static int __ocfs2_page_mkwrite(struct file *file, struct buffer_head *di_bh,
 				     fsdata);
 	BUG_ON(ret != len);
 	ret = VM_FAULT_LOCKED;
+	wait_on_stable_page_write(page);
 out:
 	return ret;
 }