From 5c2a64252c5dc4cfe78e5b2a531c118894e3d155 Mon Sep 17 00:00:00 2001 From: Gao Xiang Date: Fri, 23 Sep 2022 09:49:15 +0800 Subject: erofs: introduce partial-referenced pclusters Due to deduplication for compressed data, pclusters can be partially referenced with their prefixes. Together with the user-space implementation, it enables EROFS variable-length global compressed data deduplication with rolling hash. Link: https://lore.kernel.org/r/20220923014915.4362-1-hsiangkao@linux.alibaba.com Reviewed-by: Yue Hu Signed-off-by: Gao Xiang --- fs/erofs/super.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'fs/erofs/super.c') diff --git a/fs/erofs/super.c b/fs/erofs/super.c index ce20562ca91f..8040534ae5c0 100644 --- a/fs/erofs/super.c +++ b/fs/erofs/super.c @@ -424,6 +424,8 @@ static int erofs_read_superblock(struct super_block *sb) erofs_info(sb, "EXPERIMENTAL fscache-based on-demand read feature in use. Use at your own risk!"); if (erofs_sb_has_fragments(sbi)) erofs_info(sb, "EXPERIMENTAL compressed fragments feature in use. Use at your own risk!"); + if (erofs_sb_has_dedupe(sbi)) + erofs_info(sb, "EXPERIMENTAL global deduplication feature in use. Use at your own risk!"); out: erofs_put_metabuf(&buf); return ret; -- cgit