On Mon, Feb 2, 2009 at 6:32 PM, Giovanni Scafora <[email protected]> wrote: > 2009/2/2, Tobias Powalowski <[email protected]>: >> Hi guys, new kernel adresses the following things: >> - bump to latest version >> - changed to new btusb >> - removed buggy-acpi-patch >> >> please signoff for both arches
Interesting commit in here, this was related to that apache segfaulting we saw on gerolde: commit 273140886a6985eb08245334210550b340daa1c3 Author: Davide Libenzi <[email protected]> Date: Thu Jan 29 14:25:26 2009 -0800 epoll: drop max_user_instances and rely only on max_user_watches commit 9df04e1f25effde823a600e755b51475d438f56b upstream. Linus suggested to put limits where the money is, and max_user_watches already does that w/out the need of max_user_instances. That has the advantage to mitigate the potential DoS while allowing pretty generous default behavior. Allowing top 4% of low memory (per user) to be allocated in epoll watches, we have: LOMEM MAX_WATCHES (per user) 512MB ~178000 1GB ~356000 2GB ~712000 A box with 512MB of lomem, will meet some challenge in hitting 180K watches, socket buffers math teaches us. No more max_user_instances limits then. Signed-off-by: Davide Libenzi <[email protected]> Cc: Willy Tarreau <[email protected]> Cc: Michael Kerrisk <[email protected]> Cc: Bron Gondwana <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
