Re: [ANNOUNCE] 3.0.1-rt8 - Regression to 3.0-rt7
From: Peter Zijlstra <peterz@infradead.org>
Date: 2011-08-11 16:40:22
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On Thu, 2011-08-11 at 18:04 +0200, Tim Sander wrote:
Yes it works for CONFIG_PREEMPT_RTB=y and as you say not for CONFIG_PREEMPT_LL=y.
quoted hunk ↗ jump to hunk
+++ b/mm/filemap.c@@ -2040,7 +2040,7 @@ size_t iov_iter_copy_from_user_atomic(struct page *page, char *kaddr; size_t copied; - BUG_ON(!current->pagefault_disabled); + BUG_ON(!(in_atomic() || current->pagefault_disabled));
Ah, I had hoped that bit would have cured the PREEMPT_LL=y config. But let me untangle that posix_cpu_timer stuff first, maybe that's in the way.