Hi!
> Thankfully it's handled by the only caller, btree_write_cache_pages(),
> as later write_one_eb() call will trigger submit_one_bio(). So there
> shouldn't be any problem.
This explains there should not be any problem in _the
mainline_. AFAICT this talks about this code. Mainline version is:
prev_eb = eb;
ret = lock_extent_buffer_for_io(eb, &epd);
if (!ret) {
free_extent_buffer(eb);
continue;
} else if (ret < 0) {
done = 1;
free_extent_buffer(eb);
break;
}
But 4.19 has:
ret = lock_extent_buffer_for_io(eb, fs_info, &epd);
if (!ret) {
free_extent_buffer(eb);
continue;
}
IOW missing the code mentioned in the changelog. Is 0607eb1d452d4
prerequisite for this patch?
Best regards,
Pavel
> +/*
> + * Lock eb pages and flush the bio if we can't the locks
> + *
> + * Return 0 if nothing went wrong
> + * Return >0 is same as 0, except bio is not submitted
> + * Return <0 if something went wrong, no page is locked
> + */
--
http://www.livejournal.com/~pavelmachek
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