Messages in this thread | | | Date | Tue, 30 Jul 2013 08:08:10 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH resend] drop_caches: add some documentation and info message |
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On Tue, 30 Jul 2013 07:47:12 -0700 Dave Hansen <dave.hansen@intel.com> wrote:
> On 07/30/2013 05:55 AM, Michal Hocko wrote: > >> > If we add another flag in the future it can use bit 3? > > What if we get crazy and need more of them? > > I really hate using bits for these kinds of interfaces. I'm forgetful > and never remember which bit is which, and they're possible to run out of. > > I'm not saying do it now, but we can switch over to: > > echo 'slab|pagecache' > drop_caches > or > echo 'quiet|slab' > drop_caches > > any time we want and still have compatibility with the existing bitwise > interface.
/bin/drop_caches "slab|pagecache"
That we always insist on doing such things in the kernel instead is exhibit #1 in Why We Suck.
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