Re: [patch] 2.4's sys_readahead is borked

[Marcelo Tosatti]

On Tue, 3 Feb 2004, Robert Love wrote:

> In 2.4, sys_readahead() performs readahead against a maximum of half the
> number of inactive pages.  This is dumb, as it ignores the number of
> free pages completely.  Worse, in certain situations, such as boot, the
> inactive list can be quite small and the free list quite large, but
> readahead(2) won't do anything.
>
> The right thing to do is limit sys_readahead() to a maximum of half of
> the sum of the number of free pages and inactive pages, which is what
> 2.6 does.

Hi Robert,

This looks okay, applied.

Question: Do you know any user of sys_readahead() ?

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