diff options
| author | Sergey Senozhatsky <[email protected]> | 2024-09-02 19:56:02 +0900 |
|---|---|---|
| committer | Andrew Morton <[email protected]> | 2024-09-09 16:39:09 -0700 |
| commit | eb826a01909a2d39660ed5a486ebc43e831254bc (patch) | |
| tree | c5e4519331b70a243cb891410aacc7509e252901 | |
| parent | f2bac7ad187d77e2a053d3cd04b158a06b683d26 (diff) | |
zram: recalculate zstd compression params once
zstd compression params depends on level, but are constant for a given
instance of zstd compression backend. Calculate once (during ctx
creation).
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Sergey Senozhatsky <[email protected]>
Cc: Minchan Kim <[email protected]>
Cc: Nick Terrell <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
| -rw-r--r-- | drivers/block/zram/backend_zstd.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/block/zram/backend_zstd.c b/drivers/block/zram/backend_zstd.c index c356c5e6e503..7c6798f0c912 100644 --- a/drivers/block/zram/backend_zstd.c +++ b/drivers/block/zram/backend_zstd.c @@ -10,6 +10,7 @@ struct zstd_ctx { zstd_cctx *cctx; zstd_dctx *dctx; + zstd_parameters cprm; void *cctx_mem; void *dctx_mem; s32 level; @@ -40,6 +41,7 @@ static void *zstd_create(struct zcomp_params *params) ctx->level = zstd_default_clevel(); prm = zstd_get_params(ctx->level, PAGE_SIZE); + ctx->cprm = zstd_get_params(ctx->level, PAGE_SIZE); sz = zstd_cctx_workspace_bound(&prm.cParams); ctx->cctx_mem = vzalloc(sz); if (!ctx->cctx_mem) @@ -69,11 +71,10 @@ static int zstd_compress(void *ctx, const unsigned char *src, size_t src_len, unsigned char *dst, size_t *dst_len) { struct zstd_ctx *zctx = ctx; - const zstd_parameters prm = zstd_get_params(zctx->level, PAGE_SIZE); size_t ret; ret = zstd_compress_cctx(zctx->cctx, dst, *dst_len, - src, src_len, &prm); + src, src_len, &zctx->cprm); if (zstd_is_error(ret)) return -EINVAL; *dst_len = ret; |