On Mon, 12 Mar 2012 13:46:03 -0500 Ray Morris <support@xxxxxxxxxxxxx> wrote: > > On Wed, 29 Feb 2012 18:44:13 -0600 Ray Morris <support@xxxxxxxxxxxxx> > > wrote: > > > > > I am attempting to debug a hang in raid1 and possibly one raid5. > > > On Thu, 1 Mar 2012 12:34:18 +1100 > NeilBrown <neilb@xxxxxxx> wrote: > > > I might know what is happening. > > > > It is kind-a complicated and involved the magic code in > > block/blk-core.c:generic_make_request which turns recursive calls > > into tail recursion. > ... > > This patch might fix it. Maybe. If it compiles. > > That appears to have solved it. Thanks so much. The delay in my > response is because I wanted to give it some time to recur, as it > didn't always manifest right away. Is there anything I should do > regarding this path in future versions? Is this patch already in or > planned to be in future versions, or should users possibly keep the > patch on hand in case it's still needed later? Is there any testing > or anything that I need to do to get included in future versions? > > Thanks a lot. I will probably submit this fix to Linus shortly after 3.3 is out, with a request for it to be included in other -stable releases. You seem to be using kernels from Redhat. If you want them to include the patch you should probably raise it as an issue with them. Thanks, NeilBrown
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