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SubjectRe: [PATCH RFC] fs/fcntl: add fcntl F_GET_RSS
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* Konstantin Khlebnikov:

> This implements fcntl() for getting amount of resident memory in cache.
> Kernel already maintains counter for each inode, this patch just exposes
> it into userspace. Returned size is in kilobytes like values in procfs.

I think this needs a 32-bit compat implementation which clamps the
returned value to INT_MAX.

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