From a86d27dd3dbed4d870c6582b8d4bf1fd0f653914 Mon Sep 17 00:00:00 2001 From: Chao Yu Date: Wed, 29 Jul 2020 21:21:35 +0800 Subject: [PATCH] f2fs: compress: add sanity check during compressed cluster read In f2fs_read_multi_pages(), we don't have to check cluster's type again, since overwrite or partial truncation need page lock in cluster which has already been held by reader, so cluster's type is stable, let's change check condition to sanity check. Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim --- fs/f2fs/data.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index bc89bc987513..c1b676be67b9 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -2170,9 +2170,7 @@ int f2fs_read_multi_pages(struct compress_ctx *cc, struct bio **bio_ret, if (ret) goto out; - /* cluster was overwritten as normal cluster */ - if (dn.data_blkaddr != COMPRESS_ADDR) - goto out; + f2fs_bug_on(sbi, dn.data_blkaddr != COMPRESS_ADDR); for (i = 1; i < cc->cluster_size; i++) { block_t blkaddr;