From: Alan Cox <alan@redhat.com>
Date: Mon, 16 Jul 2007 06:39:43 +0000 (-0700)
Subject: Prevent an O_NDELAY writer from blocking when a tty write is blocked by the tty atomi... 
X-Git-Tag: v2.6.23-rc1~951
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9c1729db3e6d738f872bcb090212af00473bf666;p=pandora-kernel.git

Prevent an O_NDELAY writer from blocking when a tty write is blocked by the tty atomic writer mutex

Without this a tty write could block if a previous blocking tty write was
in progress on the same tty and blocked by a line discipline or hardware
event.  Originally found and reported by Dave Johnson.

Signed-off-by: Alan Cox <alan@redhat.com>
Acked-by: Dave Johnson <djohnson+linux-kernel@sw.starentnetworks.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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