linux-kernel - [PATCH] bad_inode: add missing i_op initializers for fileattr_get/

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Date:   Wed, 12 Jan 2022 21:20:16 +0530
From:   Ritesh Harjani <riteshh@...ux.ibm.com>
To:     linux-fsdevel@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Miklos Szeredi <mszeredi@...hat.com>,
        Ritesh Harjani <riteshh@...ux.ibm.com>
Subject: [PATCH] bad_inode: add missing i_op initializers for fileattr_get/_set

Let's bring inode_operations in sync for bad_inode_ops.
Some of the reasons are listed here [1]. But mostly it is
just for completeness sake I think.

This patch also removes some of the whitespaces at the end of line
which is due to my editor config settings for kernel work.

[1]: https://lore.kernel.org/lkml/1473708559-12714-2-git-send-email-mszeredi@redhat.com/

Signed-off-by: Ritesh Harjani <riteshh@...ux.ibm.com>
---
 fs/bad_inode.c | 30 +++++++++++++++++++++---------
 1 file changed, 21 insertions(+), 9 deletions(-)

diff --git a/fs/bad_inode.c b/fs/bad_inode.c
index 12b8fdcc445b..08d5e44316cc 100644
--- a/fs/bad_inode.c
+++ b/fs/bad_inode.c
@@ -160,6 +160,17 @@ static int bad_inode_set_acl(struct user_namespace *mnt_userns,
 	return -EIO;
 }

+static int bad_inode_fileattr_set(struct user_namespace *mnt_userns,
+			struct dentry *dentry, struct fileattr *fa)
+{
+	return -EIO;
+}
+
+static int bad_inode_fileattr_get(struct dentry *dentry, struct fileattr *fa)
+{
+	return -EIO;
+}
+
 static const struct inode_operations bad_inode_ops =
 {
 	.create		= bad_inode_create,
@@ -183,18 +194,19 @@ static const struct inode_operations bad_inode_ops =
 	.atomic_open	= bad_inode_atomic_open,
 	.tmpfile	= bad_inode_tmpfile,
 	.set_acl	= bad_inode_set_acl,
+	.fileattr_set	= bad_inode_fileattr_set,
+	.fileattr_get	= bad_inode_fileattr_get,
 };

-
 /*
  * When a filesystem is unable to read an inode due to an I/O error in
  * its read_inode() function, it can call make_bad_inode() to return a
- * set of stubs which will return EIO errors as required.
+ * set of stubs which will return EIO errors as required.
  *
  * We only need to do limited initialisation: all other fields are
  * preinitialised to zero automatically.
  */
-
+
 /**
  *	make_bad_inode - mark an inode bad due to an I/O error
  *	@inode: Inode to mark bad
@@ -203,7 +215,7 @@ static const struct inode_operations bad_inode_ops =
  *	failure this function makes the inode "bad" and causes I/O operations
  *	on it to fail from this point on.
  */
-
+
 void make_bad_inode(struct inode *inode)
 {
 	remove_inode_hash(inode);
@@ -211,9 +223,9 @@ void make_bad_inode(struct inode *inode)
 	inode->i_mode = S_IFREG;
 	inode->i_atime = inode->i_mtime = inode->i_ctime =
 		current_time(inode);
-	inode->i_op = &bad_inode_ops;
+	inode->i_op = &bad_inode_ops;
 	inode->i_opflags &= ~IOP_XATTR;
-	inode->i_fop = &bad_file_ops;
+	inode->i_fop = &bad_file_ops;
 }
 EXPORT_SYMBOL(make_bad_inode);

@@ -222,17 +234,17 @@ EXPORT_SYMBOL(make_bad_inode);
  * &bad_inode_ops to cover the case of invalidated inodes as well as
  * those created by make_bad_inode() above.
  */
-
+
 /**
  *	is_bad_inode - is an inode errored
  *	@inode: inode to test
  *
  *	Returns true if the inode in question has been marked as bad.
  */
-
+
 bool is_bad_inode(struct inode *inode)
 {
-	return (inode->i_op == &bad_inode_ops);
+	return (inode->i_op == &bad_inode_ops);
 }

 EXPORT_SYMBOL(is_bad_inode);
--
2.31.1