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Date: Fri, 23 Jul 2021 16:05:29 +0100 From: Matthew Wilcox <willy@...radead.org> To: Christoph Hellwig <hch@....de> Cc: Gao Xiang <hsiangkao@...ux.alibaba.com>, linux-erofs@...ts.ozlabs.org, linux-fsdevel@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>, "Darrick J . Wong" <djwong@...nel.org>, Andreas Gruenbacher <andreas.gruenbacher@...il.com> Subject: Re: [PATCH v6] iomap: support tail packing inline read On Thu, Jul 22, 2021 at 07:39:47AM +0200, Christoph Hellwig wrote: > @@ -675,7 +676,7 @@ static size_t iomap_write_end_inline(struct inode *inode, struct page *page, > > flush_dcache_page(page); > addr = kmap_atomic(page); > - memcpy(iomap->inline_data + pos, addr + pos, copied); > + memcpy(iomap_inline_buf(iomap, pos), addr + pos, copied); This is wrong; pos can be > PAGE_SIZE, so this needs to be addr + offset_in_page(pos).
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