diff options
Diffstat (limited to 'drivers/block/zram/backend_deflate.c')
| -rw-r--r-- | drivers/block/zram/backend_deflate.c | 29 |
1 files changed, 20 insertions, 9 deletions
diff --git a/drivers/block/zram/backend_deflate.c b/drivers/block/zram/backend_deflate.c index eae4ee35c1df..0f7f252c12f4 100644 --- a/drivers/block/zram/backend_deflate.c +++ b/drivers/block/zram/backend_deflate.c @@ -14,9 +14,20 @@ struct deflate_ctx { struct z_stream_s cctx; struct z_stream_s dctx; - s32 level; }; +static void deflate_release_params(struct zcomp_params *params) +{ +} + +static int deflate_setup_params(struct zcomp_params *params) +{ + if (params->level == ZCOMP_PARAM_NO_LEVEL) + params->level = Z_DEFAULT_COMPRESSION; + + return 0; +} + static void deflate_destroy(struct zcomp_ctx *ctx) { struct deflate_ctx *zctx = ctx->context; @@ -46,17 +57,12 @@ static int deflate_create(struct zcomp_params *params, struct zcomp_ctx *ctx) return -ENOMEM; ctx->context = zctx; - if (params->level != ZCOMP_PARAM_NO_LEVEL) - zctx->level = params->level; - else - zctx->level = Z_DEFAULT_COMPRESSION; - sz = zlib_deflate_workspacesize(-DEFLATE_DEF_WINBITS, MAX_MEM_LEVEL); zctx->cctx.workspace = vzalloc(sz); if (!zctx->cctx.workspace) goto error; - ret = zlib_deflateInit2(&zctx->cctx, zctx->level, Z_DEFLATED, + ret = zlib_deflateInit2(&zctx->cctx, params->level, Z_DEFLATED, -DEFLATE_DEF_WINBITS, DEFLATE_DEF_MEMLEVEL, Z_DEFAULT_STRATEGY); if (ret != Z_OK) @@ -78,7 +84,8 @@ error: return -EINVAL; } -static int deflate_compress(struct zcomp_ctx *ctx, struct zcomp_req *req) +static int deflate_compress(struct zcomp_params *params, struct zcomp_ctx *ctx, + struct zcomp_req *req) { struct deflate_ctx *zctx = ctx->context; struct z_stream_s *deflate; @@ -102,7 +109,9 @@ static int deflate_compress(struct zcomp_ctx *ctx, struct zcomp_req *req) return 0; } -static int deflate_decompress(struct zcomp_ctx *ctx, struct zcomp_req *req) +static int deflate_decompress(struct zcomp_params *params, + struct zcomp_ctx *ctx, + struct zcomp_req *req) { struct deflate_ctx *zctx = ctx->context; struct z_stream_s *inflate; @@ -131,5 +140,7 @@ const struct zcomp_ops backend_deflate = { .decompress = deflate_decompress, .create_ctx = deflate_create, .destroy_ctx = deflate_destroy, + .setup_params = deflate_setup_params, + .release_params = deflate_release_params, .name = "deflate", }; |