diff options
Diffstat (limited to 'drivers/staging/zram/zram_ioctl.h')
-rw-r--r-- | drivers/staging/zram/zram_ioctl.h | 21 |
1 files changed, 10 insertions, 11 deletions
diff --git a/drivers/staging/zram/zram_ioctl.h b/drivers/staging/zram/zram_ioctl.h index db94bcb..5c415fa 100644 --- a/drivers/staging/zram/zram_ioctl.h +++ b/drivers/staging/zram/zram_ioctl.h @@ -1,5 +1,5 @@ /* - * Compressed RAM based swap device + * Compressed RAM block device * * Copyright (C) 2008, 2009, 2010 Nitin Gupta * @@ -12,17 +12,16 @@ * Project home: http://compcache.googlecode.com */ -#ifndef _RAMZSWAP_IOCTL_H_ -#define _RAMZSWAP_IOCTL_H_ +#ifndef _ZRAM_IOCTL_H_ +#define _ZRAM_IOCTL_H_ -struct ramzswap_ioctl_stats { - u64 disksize; /* user specified or equal to backing swap - * size (if present) */ +struct zram_ioctl_stats { + u64 disksize; /* disksize in bytes (user specifies in KB) */ u64 num_reads; /* failed + successful */ u64 num_writes; /* --do-- */ u64 failed_reads; /* should NEVER! happen */ u64 failed_writes; /* can happen when memory is too low */ - u64 invalid_io; /* non-swap I/O requests */ + u64 invalid_io; /* non-page-aligned I/O requests */ u64 notify_free; /* no. of swap slot free notifications */ u32 pages_zero; /* no. of zero filled pages */ u32 good_compress_pct; /* no. of pages with compression ratio<=50% */ @@ -34,9 +33,9 @@ struct ramzswap_ioctl_stats { u64 mem_used_total; } __attribute__ ((packed, aligned(4))); -#define RZSIO_SET_DISKSIZE_KB _IOW('z', 0, size_t) -#define RZSIO_GET_STATS _IOR('z', 1, struct ramzswap_ioctl_stats) -#define RZSIO_INIT _IO('z', 2) -#define RZSIO_RESET _IO('z', 3) +#define ZRAMIO_SET_DISKSIZE_KB _IOW('z', 0, size_t) +#define ZRAMIO_GET_STATS _IOR('z', 1, struct zram_ioctl_stats) +#define ZRAMIO_INIT _IO('z', 2) +#define ZRAMIO_RESET _IO('z', 3) #endif |