From: Yue Hu <[email protected]> Note that count value will be always greater than EROFS_BLKSIZ when calling erofs_compress_destsize() in vle_compress_one(). So, the d1 always >= 1 for compressed block in vle_write_indexes(). That is to say tail-end block can't be compressed.
Signed-off-by: Yue Hu <[email protected]> --- v2: add DBG_BUGON(!raw), a TODO comment. lib/compress.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/lib/compress.c b/lib/compress.c index af0c720..40723a1 100644 --- a/lib/compress.c +++ b/lib/compress.c @@ -73,10 +73,11 @@ static void vle_write_indexes(struct z_erofs_vle_compress_ctx *ctx, di.di_clusterofs = cpu_to_le16(ctx->clusterofs); - /* whether the tail-end (un)compressed block or not */ + /* whether the tail-end uncompressed block or not */ if (!d1) { - type = raw ? Z_EROFS_VLE_CLUSTER_TYPE_PLAIN : - Z_EROFS_VLE_CLUSTER_TYPE_HEAD; + /* TODO: tail-packing inline compressed data */ + DBG_BUGON(!raw); + type = Z_EROFS_VLE_CLUSTER_TYPE_PLAIN; advise = cpu_to_le16(type << Z_EROFS_VLE_DI_CLUSTER_TYPE_BIT); di.di_advise = advise; -- 1.9.1
