From: Anton Blanchard <anton@samba.org>
To: Anton Altaparmakov <aia21@cantab.net>
Cc: Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: BUG: Current 2.5-BK tree dies on boot!
Date: Thu, 19 Sep 2002 08:58:28 +1000 [thread overview]
Message-ID: <20020918225828.GA2535@krispykreme> (raw)
In-Reply-To: <E17rlgP-0006wL-00@storm.christs.cam.ac.uk>
> This is without preempt. I tried both with and without SMP, with and without
> large TLB pages, with and without pte highmem, all die in the same place.
I needed this to boot the latest BK on my ppc64 box. The question is
why we are suddenly ending up with prev == NULL, hch mentioned his
patch was only a cleanup in this area.
Anton
===== mm/mprotect.c 1.16 vs edited =====
--- 1.16/mm/mprotect.c Wed Sep 18 04:05:14 2002
+++ edited/mm/mprotect.c Wed Sep 18 22:44:40 2002
@@ -281,7 +281,7 @@
}
}
- if (next && prev->vm_end == next->vm_start &&
+ if (prev && next && prev->vm_end == next->vm_start &&
can_vma_merge(next, prev->vm_flags) &&
!prev->vm_file && !(prev->vm_flags & VM_SHARED)) {
spin_lock(&prev->vm_mm->page_table_lock);
next prev parent reply other threads:[~2002-09-18 22:53 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-18 20:44 BUG: Current 2.5-BK tree dies on boot! Anton Altaparmakov
2002-09-18 22:58 ` Anton Blanchard [this message]
2002-09-19 8:47 ` Jens Axboe
2002-09-19 9:33 ` ide double init? + " Anton Altaparmakov
2002-09-19 9:45 ` Jens Axboe
2002-09-19 10:08 ` Jens Axboe
2002-09-19 10:58 ` Alan Cox
2002-09-19 11:14 ` Jens Axboe
2002-09-19 13:28 ` Alan Cox
2002-09-19 13:27 ` Jens Axboe
2002-09-19 17:48 ` Patrick Mochel
2002-09-19 18:02 ` Alan Cox
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