* [f2fs-dev] Is compression available under direct-io mode?
@ 2023-05-12 1:10 Sijie Lan
2023-05-17 2:32 ` Chao Yu
0 siblings, 1 reply; 2+ messages in thread
From: Sijie Lan @ 2023-05-12 1:10 UTC (permalink / raw)
To: linux-kernel, linux-f2fs-devel
Hi, guys,
When I do some specific test scenarios, I want to do some direct write
after data have been compressed in F2FS, but when I track the internal
functions, it seems F2FS forces my direct-io request to buffer-io
mode. Does it mean we can not do the write direct-io if we applied the
compression feature? In other words, must f2fs use an inside buffer to
provide compression functions?
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Linux-f2fs-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [f2fs-dev] Is compression available under direct-io mode?
2023-05-12 1:10 [f2fs-dev] Is compression available under direct-io mode? Sijie Lan
@ 2023-05-17 2:32 ` Chao Yu
0 siblings, 0 replies; 2+ messages in thread
From: Chao Yu @ 2023-05-17 2:32 UTC (permalink / raw)
To: Sijie Lan, linux-kernel, linux-f2fs-devel
On 2023/5/12 9:10, Sijie Lan wrote:
> Hi, guys,
>
> When I do some specific test scenarios, I want to do some direct write
> after data have been compressed in F2FS, but when I track the internal
> functions, it seems F2FS forces my direct-io request to buffer-io
> mode. Does it mean we can not do the write direct-io if we applied the
Yes, compression feature depends on page cache.
Thanks,
> compression feature? In other words, must f2fs use an inside buffer to
> provide compression functions?
>
>
> _______________________________________________
> Linux-f2fs-devel mailing list
> Linux-f2fs-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
_______________________________________________
Linux-f2fs-devel mailing list
Linux-f2fs-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
^ permalink raw reply [flat|nested] 2+ messages in thread
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