In demand-read mode, fs using fscache for demand-read doesn't know and
care the exact file size of the data blob file, and thus skip the file
size check in this case.
Signed-off-by: Jeffle Xu <jefflexu@xxxxxxxxxxxxxxxxx>
---
fs/netfs/read_helper.c | 18 ++++++++++--------
1 file changed, 10 insertions(+), 8 deletions(-)
diff --git a/fs/netfs/read_helper.c b/fs/netfs/read_helper.c
index af12a7996672..ade1523fc180 100644
--- a/fs/netfs/read_helper.c
+++ b/fs/netfs/read_helper.c
@@ -776,14 +776,16 @@ netfs_rreq_prepare_read(struct netfs_read_request *rreq,
goto out;
if (source == NETFS_DOWNLOAD_FROM_SERVER) {
- /* Call out to the netfs to let it shrink the request to fit
- * its own I/O sizes and boundaries. If it shinks it here, it
- * will be called again to make simultaneous calls; if it wants
- * to make serial calls, it can indicate a short read and then
- * we will call it again.
- */
- if (subreq->len > rreq->i_size - subreq->start)
- subreq->len = rreq->i_size - subreq->start;
+ if (rreq->type == NETFS_TYPE_CACHE) {
+ /* Call out to the netfs to let it shrink the request to fit
+ * its own I/O sizes and boundaries. If it shinks it here, it
+ * will be called again to make simultaneous calls; if it wants
+ * to make serial calls, it can indicate a short read and then
+ * we will call it again.
+ */
+ if (subreq->len > rreq->i_size - subreq->start)
+ subreq->len = rreq->i_size - subreq->start;
+ }
if (rreq->netfs_ops->clamp_length &&
!rreq->netfs_ops->clamp_length(subreq)) {
--
2.27.0
--
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