Re: [5.15 REGRESSION] iomap: Fix inline extent handling in iomap_readpage

On Wed, Nov 10, 2021 at 12:38:42PM +0100, Andreas Gruenbacher wrote:

• if (iomap->type == IOMAP_INLINE) {

• /*
  

•  * The filesystem sets iomap->length to the size of the inline
  

•  * data.  We're at the end of the file, so we know that the
  

•  * rest of the page needs to be zeroed out.
  

•  */
  

• iomap->length = iomap_read_inline_data(iter, page);
  

• return iomap->length;
  

You can't just change iomap->length here. Fix the file system to return the right length, please.