Re: [PATCH] f2fs: fix iostat parameter for discard

From: Jaegeuk Kim
Date: Tue Dec 13 2022 - 14:12:34 EST


On 12/13, Yangtao Li wrote:
> > What do you think of extending this function to support io_counts?
> >
> > void f2fs_update_iostat(struct f2fs_sb_info *sbi, struct inode *inode,
> > enum iostat_type type, unsigned long long io_bytes,
> > unsigned long long io_counts)
>
> Support to have extra io_count.
>
> But I don't think there is any need to add additional parameters to f2fs_update_iostat.
> IIUC, each call to f2fs_update_iostat means that the corresponding count increases by 1,
> so only the internal processing of the function is required.
>
> BTW, let's type out the iocount of the additional record in the following way?
>
> time: 1670930162
> [WRITE]
> app buffered data: 4096(1)

How about giving in another columns with additional stats like avg. len/call or max. len?

app buffered data: 4096 1

>
> Thx,
> Yangtao