Messages in this thread | | | Subject | Re: [PATCH RFC] fs/fcntl: add fcntl F_GET_RSS | From | Konstantin Khlebnikov <> | Date | Mon, 28 Oct 2019 15:55:19 +0300 |
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On 28/10/2019 14.46, Florian Weimer wrote: > * 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. >
32-bit machine couldn't hold more than 2TB cache in one file. Even radix tree wouldn't fit into low memory area.
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