diff options
Diffstat (limited to 'drivers/block/zram/zram_drv.h')
| -rw-r--r-- | drivers/block/zram/zram_drv.h | 21 |
1 files changed, 9 insertions, 12 deletions
diff --git a/drivers/block/zram/zram_drv.h b/drivers/block/zram/zram_drv.h index ad8aa35bae00..7f21c145e317 100644 --- a/drivers/block/zram/zram_drv.h +++ b/drivers/block/zram/zram_drv.h @@ -16,9 +16,10 @@ #define _ZRAM_DRV_H_ #include <linux/spinlock.h> -#include <linux/mutex.h> #include <linux/zsmalloc.h> +#include "zcomp.h" + /* * Some arbitrary value. This is just to catch * invalid value for num_devices module parameter. @@ -64,38 +65,33 @@ enum zram_pageflags { struct table { unsigned long handle; u16 size; /* object size (excluding header) */ - u8 count; /* object ref count (not yet used) */ u8 flags; } __aligned(4); struct zram_stats { - atomic64_t compr_size; /* compressed size of pages stored */ + atomic64_t compr_data_size; /* compressed size of pages stored */ atomic64_t num_reads; /* failed + successful */ atomic64_t num_writes; /* --do-- */ atomic64_t failed_reads; /* should NEVER! happen */ atomic64_t failed_writes; /* can happen when memory is too low */ atomic64_t invalid_io; /* non-page-aligned I/O requests */ atomic64_t notify_free; /* no. of swap slot free notifications */ - atomic_t pages_zero; /* no. of zero filled pages */ - atomic_t pages_stored; /* no. of pages currently stored */ - atomic_t good_compress; /* % of pages with compression ratio<=50% */ - atomic_t bad_compress; /* % of pages with compression ratio>=75% */ + atomic64_t zero_pages; /* no. of zero filled pages */ + atomic64_t pages_stored; /* no. of pages currently stored */ }; struct zram_meta { rwlock_t tb_lock; /* protect table */ - void *compress_workmem; - void *compress_buffer; struct table *table; struct zs_pool *mem_pool; - struct mutex buffer_lock; /* protect compress buffers */ }; struct zram { struct zram_meta *meta; struct request_queue *queue; struct gendisk *disk; - int init_done; + struct zcomp *comp; + /* Prevent concurrent execution of device init, reset and R/W request */ struct rw_semaphore init_lock; /* @@ -103,7 +99,8 @@ struct zram { * we can store in a disk. */ u64 disksize; /* bytes */ - + int max_comp_streams; struct zram_stats stats; + char compressor[10]; }; #endif |
