Re: [PATCH] btrfs: add zstd compression level support

2018-10-30 Thread Omar Sandoval
On Tue, Oct 30, 2018 at 12:06:21PM -0700, Nick Terrell wrote: > From: Jennifer Liu > > Adds zstd compression level support to btrfs. Zstd requires > different amounts of memory for each level, so the design had > to be modified to allow set_level() to allocate memory. We > preallocate one workspa

[PATCH] btrfs: add zstd compression level support

2018-10-30 Thread Nick Terrell
From: Jennifer Liu Adds zstd compression level support to btrfs. Zstd requires different amounts of memory for each level, so the design had to be modified to allow set_level() to allocate memory. We preallocate one workspace of the maximum size to guarantee forward progress. This feature is expe