Re: [PATCH 25/26] block: Reduce zone write plugging memory usage

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On 2/4/24 04:42, Hannes Reinecke wrote:
On 2/2/24 15:31, Damien Le Moal wrote:
With this mechanism, the amount of memory used per block device for zone
write plugs is roughly reduced by a factor of 4. E.g. for a 28 TB SMR
hard disk, memory usage is reduce to about 1.6 MB.

Hmm. Wouldn't it sufficient to tie the number of available plugs to the
number of open zones? Of course that doesn't help for drives not reporting that, but otherwise?

I have the same question. I think the number of zoned opened by filesystems
like BTRFS and F2FS is much smaller than the total number of zoned supported
by zoned drives.

Thanks,

Bart.





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