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Re: [PATCH] NFSv3: cached permissions subset enhancement, v2
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From: Joe Korty
Subject:
Re: [PATCH] NFSv3: cached permissions subset enhancement, v2
Date: Thursday, August 28, 2008 - 1:57 pm
On Thu, Aug 28, 2008 at 02:28:48PM -0400, Joe Korty wrote:
quoted text
> On Thu, Aug 28, 2008 at 12:03:47PM -0400, Myklebust, Trond wrote: >> This isn't a good solution. The correct thing to do here is to resend >> the request for just those permissions that the VFS requested. > > Is there any chance that the cached permissions are shared amoung > multiple open(2)'s of the same file? If sharing happens then we > really need to cache all of MAY_EXEC | MAY_WRITE | MAY_READ, rather > than just that subset asked for by the open(2) that happens to > be the one filling in the cache. > > In any case, I've rewritten the patch per the above suggestion, and
Hi Trond, I've tested the new patch with the test sequence mentioned in the original customer bug report, and it seems to work. Joe --
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Messages in current thread:
[PATCH] NFSv3: cached permissions subset enhancement
, Joe Korty
, (Wed Aug 27, 7:28 am)
Re: [PATCH] NFSv3: cached permissions subset enhancement
, Myklebust, Trond
, (Thu Aug 28, 9:03 am)
[PATCH] NFSv3: cached permissions subset enhancement, v2
, Joe Korty
, (Thu Aug 28, 11:28 am)
Re: [PATCH] NFSv3: cached permissions subset enhancement, v2
, Joe Korty
, (Thu Aug 28, 1:57 pm)
Re: [PATCH] NFSv3: cached permissions subset enhancement, v2
, Peter Staubach
, (Thu Aug 28, 3:00 pm)
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