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List:       linux-mm
Subject:    Re: shrink_caches()
From:       Andrew Morton <akpm () digeo ! com>
Date:       2003-06-28 4:35:35
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Raghu R Arur <rra2002@columbia.edu> wrote:
>
> I was going thru the code of shrink_caches(). it returns the difference
>  between the number of pages requested to be freed and the number of pages
>  that were actually freed. What i see over here is that the nr_pages which
>  is the return value, is decremented only when the pages are freed from
>  slab cache and page cache. The value is not decremented when the pages get
>  freed from dentry cache, inode cache or the quota cache, which are freed
>  at high memory pressure times. So when no pages get freed from page cache,
>  but get freed from dentry/inode caches we will be returning a value which
>  says that no pages were freed. Why is this done? can you PLEASE explain me
>  this.

yes, it is an oversight.    it's fixed in 2.5.
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