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Date: Mon, 30 Apr 2007 18:55:52 +1000 From: Neil Brown <neilb@...e.de> To: Zan Lynx <zlynx@....org> Cc: Adrian Bunk <bunk@...sta.de>, Linux Kernel <linux-kernel@...r.kernel.org> Subject: Re: [-mm patch] i386: enable 4k stacks by default On Saturday April 28, zlynx@....org wrote: > On Sat, 2007-04-28 at 21:19 +0200, Adrian Bunk wrote: > > 4k stacks have become a well-tested feature used fore a long time in > > Fedora and even in RHEL 4. > > So has anyone fixed the bugs involving ext3 and LVM snapshots on top of > DM mirror? Well -mm has a patch which makes stacked block devices much less of an issue, but this hasn't made it -linus yet - I think the dm developer isn't happy that dm works properly with it. > > Our 32-bit Fedora Core 5 dual Opteron server at work crashed once a week > while running rdiff-backup off a snapshot. Installing a 64-bit kernel > stopped the crashes, and I believe the 64-bit still uses the bigger > stacks. I wonder if FC-4 has the generic_make_request patch as well as 4K stacks. If does, then there is obviously something else to be fixed. If it doesn't, then maybe that is all that is needed. http://www.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.21-rc7/2.6.21-rc7-mm2/broken-out/md-dm-reduce-stack-usage-with-stacked-block-devices.patch NeilBrown - 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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