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-rw-r--r--fs/erofs/zdata.h24
1 files changed, 22 insertions, 2 deletions
diff --git a/fs/erofs/zdata.h b/fs/erofs/zdata.h
index 4a69515dea75..e043216b545f 100644
--- a/fs/erofs/zdata.h
+++ b/fs/erofs/zdata.h
@@ -62,8 +62,16 @@ struct z_erofs_pcluster {
/* A: lower limit of decompressed length and if full length or not */
unsigned int length;
- /* I: physical cluster size in pages */
- unsigned short pclusterpages;
+ /* I: page offset of inline compressed data */
+ unsigned short pageofs_in;
+
+ union {
+ /* I: physical cluster size in pages */
+ unsigned short pclusterpages;
+
+ /* I: tailpacking inline compressed size */
+ unsigned short tailpacking_size;
+ };
/* I: compression algorithm format */
unsigned char algorithmformat;
@@ -94,6 +102,18 @@ struct z_erofs_decompressqueue {
} u;
};
+static inline bool z_erofs_is_inline_pcluster(struct z_erofs_pcluster *pcl)
+{
+ return !pcl->obj.index;
+}
+
+static inline unsigned int z_erofs_pclusterpages(struct z_erofs_pcluster *pcl)
+{
+ if (z_erofs_is_inline_pcluster(pcl))
+ return 1;
+ return pcl->pclusterpages;
+}
+
#define Z_EROFS_ONLINEPAGE_COUNT_BITS 2
#define Z_EROFS_ONLINEPAGE_COUNT_MASK ((1 << Z_EROFS_ONLINEPAGE_COUNT_BITS) - 1)
#define Z_EROFS_ONLINEPAGE_INDEX_SHIFT (Z_EROFS_ONLINEPAGE_COUNT_BITS)