Commit a86d27dd authored Jul 29, 2020 by Chao Yu Committed by Jaegeuk Kim Aug 03, 2020

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 <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

parent 8fa41016

fs/f2fs/data.c

+1 −3

Original line number	Diff line number	Diff line
		@@ -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;

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