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Subject[PATCH 4/5] f2fs: recycle unused compress_data.chksum feild
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In Struct compress_data, chksum field was never used, remove it.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
---
fs/f2fs/compress.c | 1 -
fs/f2fs/f2fs.h | 3 +--
2 files changed, 1 insertion(+), 3 deletions(-)

diff --git a/fs/f2fs/compress.c b/fs/f2fs/compress.c
index 864035549329..e8b88f7bb7a5 100644
--- a/fs/f2fs/compress.c
+++ b/fs/f2fs/compress.c
@@ -380,7 +380,6 @@ static int f2fs_compress_pages(struct compress_ctx *cc)
}

cc->cbuf->clen = cpu_to_le32(cc->clen);
- cc->cbuf->chksum = cpu_to_le32(0);

for (i = 0; i < COMPRESS_DATA_RESERVED_SIZE; i++)
cc->cbuf->reserved[i] = cpu_to_le32(0);
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 468f807fd917..bd264d8cddaf 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -1233,10 +1233,9 @@ enum compress_algorithm_type {
COMPRESS_MAX,
};

-#define COMPRESS_DATA_RESERVED_SIZE 4
+#define COMPRESS_DATA_RESERVED_SIZE 5
struct compress_data {
__le32 clen; /* compressed data size */
- __le32 chksum; /* checksum of compressed data */
__le32 reserved[COMPRESS_DATA_RESERVED_SIZE]; /* reserved */
u8 cdata[]; /* compressed data */
};
--
2.18.0.rc1
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