Messages in this thread | | | Date | Mon, 10 Sep 2007 00:49:27 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH] [-mm] FS: file name must be unique in the same dir in procfs |
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On Mon, 20 Aug 2007 23:50:05 +0800 Zhang Rui <rui.zhang@intel.com> wrote:
> Hi, Oliver, > Thanks for your comments, > > On Mon, 2007-08-20 at 18:45 +0800, Oliver Neukum wrote: > > Am Montag 20 August 2007 schrieb Zhang Rui: > > > Files name must be unique in the same directory. > > > > > > Bug is reported here: > > > http://bugzilla.kernel.org/show_bug.cgi?id=8798 > > > > Then I'd say fix the callers. > But at least the callers need to be told that something is wrong first. > > > This will paper over bugs. > Hmm, what kind of bugs? > callers always need to check the return value when calling > proc_mkdir/create_proc_entry, don't they? >
Yes, but there's some risk that such a change will cause a presently-working system to stop working. It's quite likely, if that system is checking the procfs-creation return value.
So I think it'd be best if we were to detect the duplication and print a warning (which should include, if possible, the full pathname and a dump_stack()) and then the code should proceed as normal: permit the duplicated entry and return success.
Then, when such duplicates are reported, we can work out what to do about them on a case-by-case basis.
(btw, please feed your patches through scripts/checkpatch.pl - that one had a remarkably high coding-style-error-density). - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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