Messages in this thread | | | Date | Wed, 25 Jun 2014 15:54:43 -0700 | From | Andrew Morton <> | Subject | Re: fs/stat: Reduce memory requirements for stat_open |
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On Wed, 25 Jun 2014 15:52:30 -0700 (PDT) David Rientjes <rientjes@google.com> wrote:
> On Wed, 25 Jun 2014, Stefan Bader wrote: > > > Heiko and I both had the same issue. Since some x86 hardware also reaches a lot > > of CPUs (hyperthreads included), we bumped the possible number of CPUs to 256 at > > least for the 64bit kernel. And that resulted in failed accesses to /proc/stat > > when memory became fragmented. > > So the first patch will avoid this on most systems. I have not seen this myself, > > but I would expect him to be happy with 1/2 already. For really excessive > > hardware 2/2 will close the gap. > > Since this is no critical bug, I am fine with 3.17, too. I have not done so, > > yet, but I could let our reporter try the patches (again, probably not verifying > > the second part). Just waited to do so to see whether the code settles down to > > these changes. > > > > Ok, thanks. Looks like > > proc-stat-convert-to-single_open_size.patch > fs-seq_file-fallback-to-vmalloc-allocation.patch > > are destined for 3.17.
Actually I've bumped them into the 3.16 queue, cc stable.
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