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Date: Thu, 24 Mar 2011 15:33:30 +1100 From: Benjamin Herrenschmidt <benh@...nel.crashing.org> To: "Eric W. Biederman" <ebiederm@...ssion.com> Cc: linux-kernel@...r.kernel.org, kexec@...ts.infradead.org, linuxppc-dev@...abs.org, WANG Cong <xiyou.wangcong@...il.com>, Anton Blanchard <anton@....ibm.com> Subject: Re: [PATCH 1/2] kdump: Allow shrinking of kdump region to be overridden On Mon, 2011-03-21 at 03:10 +0000, WANG Cong wrote: > On Tue, 15 Mar 2011 22:22:19 +0530, Mahesh J Salgaonkar wrote: > >> Okay, but with this patch applied, we will just ignore rtas region, > >> right? > > Correct. > >> Thus, when I echo 0 to free all the 128M crashkernel memory, the final > >> result will be 32M left, which means crash_size will still show 32M. > >> This looks odd. > >> > >> How about skipping the 32M as a whole? I mean once the region being > >> freed has overlap with this rtas region, skip the whole rtas region, > >> and let crash_size > >> show 0? > > The existing code from crash_shrink_memory() function reduces the crash > > size to 0 when echo'ed 0. I did test this patchset and verified that > > /sys/kernel/kexec_crash_size show 0 value. > > Oh, ok. > > Acked-by: WANG Cong <xiyou.wangcong@...il.com> So Eric, what's the right approach to get that merged ? This is a bug gating an important delivery for us, and the patch doesn't appear terribly invasive ? :-) I can send it to Linus myself if you prefer and give me your Ack. Cheers, Ben. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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