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SubjectRe: Slab Fragmentation Reduction V15
On 01/30/2010 05:48 AM, Andi Kleen wrote:
> On Fri, Jan 29, 2010 at 02:49:31PM -0600, Christoph Lameter wrote:

>> 1. Establish a reference to an dentry/inode so that it is pinned.
>> Hopefully in a way that is not too expensive (i.e. no superblock
>> lock)
>>
>> 2. A means to free a dentry/inode objects from the VM reclaim context.
>
>
> Al, do you have a suggestions on a good way to do that?

You cannot free inode objects for files that are open, mmapped, etc.

> I guess the problem could be simplified by ignoring dentries in "unusual"
> states?

You mean dentries that are in use? :)

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