linux-kernel - Re: [RFC PATCH 0/2] apply write hints to select the type of segments

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Date:   Fri, 17 Nov 2017 09:23:49 -0800
From:   Christoph Hellwig <hch@...radead.org>
To:     Hyunchul Lee <hyc.lee@...il.com>
Cc:     Jaegeuk Kim <jaegeuk@...nel.org>, Chao Yu <yuchao0@...wei.com>,
        linux-f2fs-devel@...ts.sourceforge.net,
        linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        kernel-team@....com, Hyunchul Lee <cheol.lee@....com>,
        Jens Axboe <axboe@...nel.dk>, linux-block@...r.kernel.org
Subject: Re: [RFC PATCH 0/2] apply write hints to select the type of segments


Next time please coordinate this with the block list and Jens, who
actually wrote the patch.

>   hints                     segment type
>   -----                     ------------
>   WRITE_LIFE_SHORT          CURSEG_COLD_DATA
>   WRITE_LIFE_EXTREME        CURSEG_HOT_DATA
>   others                    CURSEG_WARM_DATA

Normally cold data is data with a long lifetime, and extreme is colder
than cold, so there seems to be some mismatch here.