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Re: [PATCH] Linux-like /proc/swaps for linprocfs
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Kostik Belousov
Jul 28, 2011, 7:35:33 PM7/28/11
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On Fri, Jul 29, 2011 at 01:15:59AM +0200, Robert Millan wrote:
> Please consider this patch, it implements Linux-like /proc/swaps for linprocfs.
>
> E.g.
>
> $ cat /proc/swaps
> Filename Type Size Used Priority
> /dev/zvol/dimoni/swap unknown 2097152 0 -1
>
> --
> Robert Millan
> Please consider this patch, it implements Linux-like /proc/swaps for linprocfs.
>
> E.g.
>
> $ cat /proc/swaps
> Filename Type Size Used Priority
> /dev/zvol/dimoni/swap unknown 2097152 0 -1
>
> --
> Robert Millan
The patch is too hackish, IMHO.
I would prefer to have an exported kernel function that fills xswdev
by index, used both by vm_swap_info and linprocfs.
For the device name, you would use sw_vp->v_rdev->si_name, see, for
instance, the following fragment in the swapoff_all():
if (vn_isdisk(sp->sw_vp, NULL))
devname = sp->sw_vp->v_rdev->si_name;
else
devname = "[file]";
This could be another function that returns swap information by index.
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