15 Nov
2019
15 Nov
'19
5:48 p.m.
On Fri, Nov 15, 2019 at 06:47:21PM +0100, Michal Hocko wrote:
s@online@offline@
And reading after myself it turned out to sound differently than I meant. What I wanted to say really is, what is the difference that css_tryget_online really guarantee when the css might go offline right after the call suceeds so more specifically what is the difference between if (css_tryget()) { if (online) DO_SOMETHING } and if (css_tryget_online()) { DO_SOMETHING }
both of them are racy and do not provide any guarantee wrt. online state.
It's about not giving new reference when the object is known to be delted to the user. Can you please think more about how file deletions work?
Thanks.
--
tejun