Re: [f2fs-dev] [PATCH v3 4/4] f2fs: Add option to limit required GC for checkpoint=disable

From: Chao Yu
Date: Mon Jun 03 2019 - 11:19:38 EST

On 2019-5-30 8:49, Daniel Rosenberg via Linux-f2fs-devel wrote:
> This extends the checkpoint option to allow checkpoint=disable:%u[%]
> This allows you to specify what how much of the disk you are willing
> to lose access to while mounting with checkpoint=disable. If the amount
> lost would be higher, the mount will return -EAGAIN. This can be given
> as a percent of total space, or in blocks.
> Currently, we need to run garbage collection until the amount of holes
> is smaller than the OVP space. With the new option, f2fs can mark
> space as unusable up front instead of requiring garbage collection until
> the number of holes is small enough.
> Signed-off-by: Daniel Rosenberg <drosen@xxxxxxxxxx>

Reviewed-by: Chao Yu <yuchao0@xxxxxxxxxx>