Messages in this thread | | | Date | Sat, 25 Apr 2009 20:31:33 +0100 | From | Al Viro <> | Subject | Re: [patch 00/27] [rfc] vfs scalability patchset |
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On Sat, Apr 25, 2009 at 12:08:16PM -0700, Eric W. Biederman wrote:
> Can we? My first glance at that code I asked myself if we could examine > i_writecount, instead of going to the file. My impression was that we > were deliberately only counting persistent write references from files
No, there's nothing deliberate about that. The code is simply wrong; some of that crap had been fixed with mnt_want_write series, but the rest...
> instead of transient write references. As only the persistent write > references matter. Transient write references can at least in theory > be flushed as the filesystem is remounting read-only.
No. It's far too painful to do and no fs is doing that. You are looking for deliberate behaviour in a place where we have a half-fixed pile of races.
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