diff options
Diffstat (limited to 'drivers/staging/zram/zram_drv.h')
| -rw-r--r-- | drivers/staging/zram/zram_drv.h | 21 |
1 files changed, 3 insertions, 18 deletions
diff --git a/drivers/staging/zram/zram_drv.h b/drivers/staging/zram/zram_drv.h index fbe8ac98704c..572c0b1551d4 100644 --- a/drivers/staging/zram/zram_drv.h +++ b/drivers/staging/zram/zram_drv.h @@ -26,18 +26,6 @@ */ static const unsigned max_num_devices = 32; -/* - * Stored at beginning of each compressed object. - * - * It stores back-reference to table entry which points to this - * object. This is required to support memory defragmentation. - */ -struct zobj_header { -#if 0 - u32 table_idx; -#endif -}; - /*-- Configurable parameters */ /* Default zram disk size: 25% of total RAM */ @@ -68,9 +56,6 @@ static const size_t max_zpage_size = PAGE_SIZE / 4 * 3; /* Flags for zram pages (table[page_no].flags) */ enum zram_pageflags { - /* Page is stored uncompressed */ - ZRAM_UNCOMPRESSED, - /* Page consists entirely of zeros */ ZRAM_ZERO, @@ -81,11 +66,11 @@ enum zram_pageflags { /* Allocated for each disk page */ struct table { - void *handle; + unsigned long handle; u16 size; /* object size (excluding header) */ u8 count; /* object ref count (not yet used) */ u8 flags; -} __attribute__((aligned(4))); +} __aligned(4); struct zram_stats { u64 compr_size; /* compressed size of pages stored */ @@ -98,7 +83,7 @@ struct zram_stats { u32 pages_zero; /* no. of zero filled pages */ u32 pages_stored; /* no. of pages currently stored */ u32 good_compress; /* % of pages with compression ratio<=50% */ - u32 pages_expand; /* % of incompressible pages */ + u32 bad_compress; /* % of pages with compression ratio>=75% */ }; struct zram { |