On Fri, Sep 04, 2020 at 04:48:07PM +0200, Bean Huo wrote: > From: Bean Huo <[email protected]> > > Current generic_file_buffered_read() will break up the larger batches of pages > and read data in single page length in case of ra->ra_pages == 0. This patch > is > to allow it to pass the batches of pages down to the device if the supported > maximum IO size >= the requested size.
At least ubifs and mtd seem to force ra_pages = 0 to disable read-ahead entirely, so this seems intentional.
