From: Tom Zanussi <zanussi@us.ibm.com>
Date: Tue, 20 Dec 2005 19:10:22 +0000 (-0600)
Subject: [PATCH] relayfs: remove warning printk() in relay_switch_subbuf()
X-Git-Tag: v2.6.15-rc7~16^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fd30fc3256824f03c2ff9317269d66f72f7042ca;p=pandora-kernel.git

[PATCH] relayfs: remove warning printk() in relay_switch_subbuf()

There's currently a diagnostic printk in relay_switch_subbuf() meant as
a warning if you accidentally try to log an event larger than the
sub-buffer size.

The problem is if this happens while logging from somewhere it's not
safe to be doing printks, such as in the scheduler, you can end up with
a deadlock.  This patch removes the warning from relay_switch_subbuf()
and instead prints some diagnostic info when the channel is closed.

Thanks to Mathieu Desnoyers for pointing out the problem and
suggesting a fix.

Signed-off-by: Tom Zanussi <zanussi@us.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

Reading git-diff-tree failed