Re: [RFD PATCH 0/3] Use "object index" rather than pointers in the object hashing

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Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> writes:

> This is a series of three patches that changes the low-level object 
> hashing to use a "object index" rather than the pointer to a "struct 
> object" in the hash-tables. It's something I've been thinking about for a 
> long time, so I just decided to do it.
>
> The reason to do it is that on 64-bit architectures the object hash table 
> is actually a fairly sizeable entity, and not for a very good reason. It 
> has a ton of pointers to the objects we have allocated, so each hash-table 
> entry is 64-bits, even though obviously we aren't likely to ever have that 
> many objects.

I was thinking about revamping that "keeping track of all
objects" stuff for some time, too, but in a different direction.
Glad I have not touched that area ;-).

I think this makes sense, although the numbers are somewhat
dissapointing.

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