Re: [PATCH 2/2] vhost/scsi: Delete error messages for failed memory allocations in five functions

From: SF Markus Elfring
Date: Mon May 22 2017 - 06:50:54 EST


>> 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?


>> +++ 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