Re: [PATCH RFC 3/6] block: Handle bio_split() errors in bio_submit_split()

From: John Garry
Date: Mon Sep 23 2024 - 06:34:10 EST


On 20/09/2024 15:09, Christoph Hellwig wrote:
On Thu, Sep 19, 2024 at 09:22:59AM +0000, John Garry wrote:
+ if (IS_ERR(split)) {
+ bio->bi_status = errno_to_blk_status(PTR_ERR(split));
+ bio_endio(bio);
+ return NULL;
+ }
This could use a goto to have a single path that ends the bio and
return NULL instead of duplicating the logic.

Sure, ok.

I was also considering adding a helper for these cases, similar to bio_io_error(), which accepts a bio and an int errorno or blk_status_t type, like:

void bio_end_error(struct bio* bio, int errno)
{
bio->bi_status = errno_to_blk_status(errno);
bio_endio(bio);
}

I didn't bother though. Sometimes we already have the blk_status_t value, which made this a half-useful API.