Re: [5.15 REGRESSION] iomap: Fix inline extent handling in iomap_readpage
From: Christoph Hellwig <hch@lst.de>
Date: 2021-11-10 12:55:31
Also in:
linux-fsdevel, linux-xfs
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.