Minix could fail to properly write out inode on fsync(2) due to races with WB_SYNC_NONE writeback. Several racing fsyncs could also result in some fsync returning earlier than all metadata buffers were properly persisted. Furthermore DIRSYNC handling missed writing inode related metadata. Fix all these issues by using new .sync_inode_metadata method which makes sure all inode related metadata is written to disk during any WB_SYNC_ALL writeback. Signed-off-by: Jan Kara <jack@suse.cz> Link: https://patch.msgid.link/20260727104923.3828017-36-jack@suse.cz Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>