X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=mm%2Ffilemap.c;h=322aea78058a07134a668306405016b5d987ea1f;hb=refs%2Fheads%2Fsandbox%2Flstelmach%2Fvirgl;hp=08341616ae7a1edf70b55c8bbc35a53a35ac57ab;hpb=95b8b5953a315081eadbadf49200e57d7e05aae7;p=platform%2Fkernel%2Flinux-starfive.git

diff --git a/mm/filemap.c b/mm/filemap.c
index 0834161..322aea7 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -2569,18 +2569,19 @@ static int filemap_get_pages(struct kiocb *iocb, struct iov_iter *iter,
 	struct folio *folio;
 	int err = 0;
 
+	/* "last_index" is the index of the page beyond the end of the read */
 	last_index = DIV_ROUND_UP(iocb->ki_pos + iter->count, PAGE_SIZE);
 retry:
 	if (fatal_signal_pending(current))
 		return -EINTR;
 
-	filemap_get_read_batch(mapping, index, last_index, fbatch);
+	filemap_get_read_batch(mapping, index, last_index - 1, fbatch);
 	if (!folio_batch_count(fbatch)) {
 		if (iocb->ki_flags & IOCB_NOIO)
 			return -EAGAIN;
 		page_cache_sync_readahead(mapping, ra, filp, index,
 				last_index - index);
-		filemap_get_read_batch(mapping, index, last_index, fbatch);
+		filemap_get_read_batch(mapping, index, last_index - 1, fbatch);
 	}
 	if (!folio_batch_count(fbatch)) {
 		if (iocb->ki_flags & (IOCB_NOWAIT | IOCB_WAITQ))