thread_with_file: add f_ops.flush

Add a flush op, to return the exit code via close().

Also update bcachefs usage to use this to return fsck exit codes.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

1 files changed, 1 insertions, 1 deletions

diff --git a/include/linux/thread_with_file.h b/include/linux/thread_with_file.h
index 33770938d5d9..cf44337af3e9 100644
--- a/include/linux/thread_with_file.h
+++ b/include/linux/thread_with_file.h
@@ -56,7 +56,7 @@ struct thread_with_stdio;
 
 struct thread_with_stdio_ops {
 	void (*exit)(struct thread_with_stdio *);
-	void (*fn)(struct thread_with_stdio *);
+	int (*fn)(struct thread_with_stdio *);
 	long (*unlocked_ioctl)(struct thread_with_stdio *, unsigned int, unsigned long);
 };