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Date: Fri, 05 Oct 2012 12:33:26 -0500 From: Eric Sandeen <sandeen@...hat.com> To: Prashant Shah <pshah.mumbai@...il.com> CC: linux-ext4@...r.kernel.org Subject: Re: freeze_bdev hangs On 10/5/12 6:58 AM, Prashant Shah wrote: > Hi, > > I am writing a filter driver for ext3 in which it replaces the block > device request queue 'make_request_fn' with the driver custom > function. Calling freeze_bdev() or freeze_super() before replacing the > 'make_request_fn' hangs the kernel. What am I doing wrong ? Will this > method work ? I haven't looked at your custom code, but freeze has changed a bit lately, and "hangs" is a very vague description For starters I'd try a sysrq-w when the system "hangs" and see where things are at, that would offer you some clues. -Eric -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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