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Date: Wed, 12 Nov 2008 09:46:36 +1100 (EST) From: "NeilBrown" <neilb@...e.de> To: "Stefan Lippers-Hollmann" <s.L-H@....de> Cc: gregkh@...e.de, linux-kernel@...r.kernel.org, maan@...temlinux.org, stable@...nel.org Subject: Re: patch md-linear-fix-a-division-by-zero-bug-for-very-small-arrays.patch added to 2.6.27-stable tree On Wed, November 12, 2008 9:28 am, Stefan Lippers-Hollmann wrote: > Hi > > On Dienstag, 11. November 2008, gregkh@...e.de wrote: >> >> --- a/drivers/md/linear.c >> +++ b/drivers/md/linear.c >> @@ -157,6 +157,8 @@ static linear_conf_t *linear_conf(mddev_ >> >> min_spacing = conf->array_sectors / 2; >> sector_div(min_spacing, PAGE_SIZE/sizeof(struct dev_info *)); >> + if (min_sectors == 0) >> + min_sectors = 1; >> >> /* min_spacing is the minimum spacing that will fit the hash >> * table in one PAGE. This may be much smaller than needed. > > drivers/md/linear.c: In function 'linear_conf': > drivers/md/linear.c:160: error: 'min_sectors' undeclared (first use in > this function) > drivers/md/linear.c:160: error: (Each undeclared identifier is reported > only once > drivers/md/linear.c:160: error: for each function it appears in.) > make[5]: *** [drivers/md/linear.o] Error 1 > make[4]: *** [drivers/md] Error 2 > make[4]: *** Waiting for unfinished jobs.... > > This one obviously depends on: > > commit 23242fbb470ff4c8c4d41f178832cf1929273d7d > Author: Andre Noll <maan@...temlinux.org> > Date: Mon Oct 13 11:55:12 2008 +1100 > > md: linear.c: Make two local variables sector-based. > > which in turn depends on previous changes. Yes, but only syntactically, not semantically. In 2.6.27, it needs to be if (min_spacing == 0) min_spacing = 1; The other previous patches don't need to be backported. Thanks for reporting this. NeilBrown > > Regards > Stefan Lippers-Hollmann > -- 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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