Looks sensible, although I think it could use some more sanity checking
and a changelog. Does the version below work for you?
---
>From e4603b7acde9b77e7a4aad6038c7ac42ca35772d Mon Sep 17 00:00:00 2001
From: Andreas Gruenbacher <agruenba@xxxxxxxxxx>
Date: Fri, 29 Jun 2018 16:44:44 +0200
Subject: iomap: Add inline data support to iomap_readpage_actor
Just copy the inline data into the page using the existing helper.
Signed-off-by: Andreas Gruenbacher <agruenba@xxxxxxxxxx>
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
fs/iomap.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/fs/iomap.c b/fs/iomap.c
index 4d8ff0f5ecc9..966ffad9706a 100644
--- a/fs/iomap.c
+++ b/fs/iomap.c
@@ -155,6 +155,13 @@ iomap_readpage_actor(struct inode *inode, loff_t pos, loff_t length, void *data,
bool is_contig = false;
sector_t sector;
+ if (iomap->type == IOMAP_INLINE) {
+ WARN_ON_ONCE(poff);
+ WARN_ON_ONCE(plen != PAGE_SIZE);
+ iomap_read_inline_data(inode, page, iomap);
+ return PAGE_SIZE;
+ }
+
/* we don't support blocksize < PAGE_SIZE quite yet. */
WARN_ON_ONCE(pos != page_offset(page));
WARN_ON_ONCE(plen != PAGE_SIZE);
--
2.18.0
