Patch "ovl: add helper ovl_file_modified()" has been added to the 6.6-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    ovl: add helper ovl_file_modified()

to the 6.6-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     ovl-add-helper-ovl_file_modified.patch
and it can be found in the queue-6.6 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit f87db32c0cdadc7eea4a37560867da0bd0bb87e8
Author: Amir Goldstein <amir73il@xxxxxxxxx>
Date:   Wed Sep 27 13:43:44 2023 +0300

    ovl: add helper ovl_file_modified()
    
    [ Upstream commit c002728f608183449673818076380124935e6b9b ]
    
    A simple wrapper for updating ovl inode size/mtime, to conform
    with ovl_file_accessed().
    
    Signed-off-by: Amir Goldstein <amir73il@xxxxxxxxx>
    Stable-dep-of: 7c98f7cb8fda ("remove call_{read,write}_iter() functions")
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/fs/overlayfs/file.c b/fs/overlayfs/file.c
index 8be4dc050d1ed..9fd88579bfbfb 100644
--- a/fs/overlayfs/file.c
+++ b/fs/overlayfs/file.c
@@ -235,6 +235,12 @@ static loff_t ovl_llseek(struct file *file, loff_t offset, int whence)
 	return ret;
 }
 
+static void ovl_file_modified(struct file *file)
+{
+	/* Update size/mtime */
+	ovl_copyattr(file_inode(file));
+}
+
 static void ovl_file_accessed(struct file *file)
 {
 	struct inode *inode, *upperinode;
@@ -290,10 +296,8 @@ static void ovl_aio_cleanup_handler(struct ovl_aio_req *aio_req)
 	struct kiocb *orig_iocb = aio_req->orig_iocb;
 
 	if (iocb->ki_flags & IOCB_WRITE) {
-		struct inode *inode = file_inode(orig_iocb->ki_filp);
-
 		kiocb_end_write(iocb);
-		ovl_copyattr(inode);
+		ovl_file_modified(orig_iocb->ki_filp);
 	}
 
 	orig_iocb->ki_pos = iocb->ki_pos;
@@ -403,7 +407,7 @@ static ssize_t ovl_write_iter(struct kiocb *iocb, struct iov_iter *iter)
 				     ovl_iocb_to_rwf(ifl));
 		file_end_write(real.file);
 		/* Update size */
-		ovl_copyattr(inode);
+		ovl_file_modified(file);
 	} else {
 		struct ovl_aio_req *aio_req;
 
@@ -489,7 +493,7 @@ static ssize_t ovl_splice_write(struct pipe_inode_info *pipe, struct file *out,
 
 	file_end_write(real.file);
 	/* Update size */
-	ovl_copyattr(inode);
+	ovl_file_modified(out);
 	revert_creds(old_cred);
 	fdput(real);
 
@@ -570,7 +574,7 @@ static long ovl_fallocate(struct file *file, int mode, loff_t offset, loff_t len
 	revert_creds(old_cred);
 
 	/* Update size */
-	ovl_copyattr(inode);
+	ovl_file_modified(file);
 
 	fdput(real);
 
@@ -654,7 +658,7 @@ static loff_t ovl_copyfile(struct file *file_in, loff_t pos_in,
 	revert_creds(old_cred);
 
 	/* Update size */
-	ovl_copyattr(inode_out);
+	ovl_file_modified(file_out);
 
 	fdput(real_in);
 	fdput(real_out);