From: Andrew Morton Date: Sun, 25 Jun 2006 12:47:46 +0000 (-0700) Subject: [PATCH] pdflush: handle resume wakeups X-Git-Tag: v2.6.18-rc1~993 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d616e09ab33aa4d013a93c9b393efd5cebf78521;p=pandora-kernel.git [PATCH] pdflush: handle resume wakeups pdflush is carefully designed to ensure that all wakeups have some corresponding work to do - if a woken-up pdflush thread discovers that it hasn't been given any work to do then this is considered an error. That all broke when swsusp came along - because a timer-delivered wakeup to a frozen pdflush thread will just get lost. This causes the pdflush thread to get lost as well: the writeback timer is supposed to be re-armed by pdflush in process context, but pdflush doesn't execute the callout which does this. Fix that up by ignoring the return value from try_to_freeze(): jsut proceed, see if we have any work pending and only go back to sleep if that is not the case. Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Reading git-diff-tree failed