lkml.org 
[lkml]   [2005]   [Sep]   [24]   [last100]   RSS Feed
Views: [more markup]  [less markup]  [headers]  [forward] 
 
Messages in this thread
/
DateSat, 24 Sep 2005 21:38:39 +0200
FromWilly Tarreau <>
Subject[PATCH 0/3] fixes for overflow in poll(), epoll(), and msec_to_jiffies()
Hello,

After the discussion around epoll() timeout, I noticed that the functions used
to detect the timeout could themselves overflow for some values of HZ.

So I decided to fix them by defining a macro which represents the maximal
acceptable argument which is guaranteed not to overflow. As an added bonus,
those functions can now be used in poll() and ep_poll() and remove the divide
if HZ == 1000, or replace it with a shift if (1000 % HZ) or (HZ % 1000) is a
power of two.
Patches against 2.6.14-rc2-mm1 sent as replies to this mail.

Regards,
Willy

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-09-24 19:44    [from the cache]
©2003-2008