+/*
+ * Figure out the bio's operation flags from the dio request, the
+ * mapping, and whether or not we want FUA. Note that we can end up
+ * clearing the WRITE_FUA flag in the dio request.
+ */
+static inline unsigned int
+iomap_dio_bio_opflags(struct iomap_dio *dio, struct iomap *iomap, bool use_fua)
+{
+ unsigned int opflags = REQ_SYNC | REQ_IDLE;
+
+ if (!(dio->flags & IOMAP_DIO_WRITE)) {
+ WARN_ON_ONCE(iomap->flags & IOMAP_F_ZONE_APPEND);
+ return REQ_OP_READ;
+ }
+
+ if (iomap->flags & IOMAP_F_ZONE_APPEND)
+ opflags |= REQ_OP_ZONE_APPEND;
+ else
+ opflags |= REQ_OP_WRITE;
+
+ if (use_fua)
+ opflags |= REQ_FUA;
+ else
+ dio->flags &= ~IOMAP_DIO_WRITE_FUA;
+
+ return opflags;
+}
+