1 files changed, 14 insertions, 2 deletions

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 0d25f5ca5618..0b314b2034d8 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -147,7 +147,8 @@ struct f2fs_mount_info {
 
         /* For compression */
         unsigned char compress_algorithm;       /* algorithm type */
-        unsigned compress_log_size;             /* cluster log size */
+        unsigned char compress_log_size;        /* cluster log size */
+        bool compress_chksum;                   /* compressed data chksum */
         unsigned char compress_ext_cnt;         /* extension count */
         unsigned char extensions[COMPRESS_EXT_NUM][F2FS_EXTENSION_LEN]; /* extensions */
 };
@@ -676,6 +677,7 @@ enum {
         FI_ATOMIC_REVOKE_REQUEST, /* request to drop atomic data */
         FI_VERITY_IN_PROGRESS,  /* building fs-verity Merkle tree */
         FI_COMPRESSED_FILE,     /* indicate file's data can be compressed */
+        FI_COMPRESS_CORRUPT,    /* indicate compressed cluster is corrupted */
         FI_MMAP_FILE,           /* indicate file was mmapped */
         FI_MAX,                 /* max flag, never be used */
 };
@@ -733,6 +735,7 @@ struct f2fs_inode_info {
         atomic_t i_compr_blocks;                /* # of compressed blocks */
         unsigned char i_compress_algorithm;     /* algorithm type */
         unsigned char i_log_cluster_size;       /* log of cluster size */
+        unsigned short i_compress_flag;         /* compress flag */
         unsigned int i_cluster_size;            /* cluster size */
 };
 
@@ -1272,9 +1275,15 @@ enum compress_algorithm_type {
         COMPRESS_MAX,
 };
 
-#define COMPRESS_DATA_RESERVED_SIZE             5
+enum compress_flag {
+        COMPRESS_CHKSUM,
+        COMPRESS_MAX_FLAG,
+};
+
+#define COMPRESS_DATA_RESERVED_SIZE             4
 struct compress_data {
         __le32 clen;                    /* compressed data size */
+        __le32 chksum;                  /* compressed data chksum */
         __le32 reserved[COMPRESS_DATA_RESERVED_SIZE];   /* reserved */
         u8 cdata[];                     /* compressed data */
 };
@@ -3888,6 +3897,9 @@ static inline void set_compress_context(struct inode *inode)
                         F2FS_OPTION(sbi).compress_algorithm;
         F2FS_I(inode)->i_log_cluster_size =
                         F2FS_OPTION(sbi).compress_log_size;
+        F2FS_I(inode)->i_compress_flag =
+                        F2FS_OPTION(sbi).compress_chksum ?
+                                1 << COMPRESS_CHKSUM : 0;
         F2FS_I(inode)->i_cluster_size =
                         1 << F2FS_I(inode)->i_log_cluster_size;
         F2FS_I(inode)->i_flags |= F2FS_COMPR_FL;