quoted

Link: http://events.linuxfoundation.org/sites/events/files/slides/LCJ16-Refactor_Strings-WSang_0.pdf

Please include an actual explanation for this change instead of linking
to slides.

Do you care for a bit of code size reduction by removal of questionable
error messages?

Why are you trying to get rid of memory allocation failure messages?

Do you find information from a Linux allocation failure report sufficient
for any function implementations here?

quoted

+++ b/drivers/vhost/scsi.c

@@ -417,5 +417,4 @@ vhost_scsi_allocate_evt(struct vhost_scsi *vs,
 	if (!evt) {
-		vq_err(vq, "Failed to allocate vhost_scsi_evt\n");

#define vq_err(vq, fmt, ...) do {                                  \
                pr_debug(pr_fmt(fmt), ##__VA_ARGS__);       \
                if ((vq)->error_ctx)                               \
                                eventfd_signal((vq)->error_ctx, 1);\
        } while (0)

You silently dropped the eventfd_signal() call.

Do you prefer to preserve this special error handling then?

Regards,
Markus