Re: Unending loop in __alloc_pages_slowpath following OOM-kill; rfc: patch.

quoted

quoted

Why?

Otherwise, we don't have good PCP dropping trigger. Big machine might have
big pcp cache.

Big machines also have a large cost for sending IPIs.

Yes. But it's only matter if IPIs are frequently happen.
But, drain_all_pages() is NOT only IPI source. some vmscan function (e.g.
try_to_umap) makes a lot of IPIs.

Then, it's _relatively_ not costly. I have a question. Do you compare which
operation and drain_all_pages()? IOW, your "costly" mean which scenario suspect?




--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org.  For more info on Linux MM,
see: http://www.linux-mm.org/ .
Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>