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author | Nitin Gupta <ngupta@vflare.org> | 2010-06-01 13:31:24 +0530 |
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committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-06-18 12:46:42 -0700 |
commit | 16a4bfb9e9dfefbd28ee170fa3e259bc88d81eb5 (patch) | |
tree | fc8cdc97f97b699c7ed0e0a08eacd5a3b1f3058f /drivers/staging/zram/zram_ioctl.h | |
parent | a1dd52afa94238d361d70502b219409ea115e235 (diff) | |
download | op-kernel-dev-16a4bfb9e9dfefbd28ee170fa3e259bc88d81eb5.zip op-kernel-dev-16a4bfb9e9dfefbd28ee170fa3e259bc88d81eb5.tar.gz |
Staging: Rename ramzswap files to zram
Related changes:
- Modify revelant Kconfig and Makefile accordingly.
- Change include filenames in code.
- Remove dependency on CONFIG_SWAP in Kconfig as zram usage
is no longer limited to swap disks.
Signed-off-by: Nitin Gupta <ngupta@vflare.org>
Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/staging/zram/zram_ioctl.h')
-rw-r--r-- | drivers/staging/zram/zram_ioctl.h | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/drivers/staging/zram/zram_ioctl.h b/drivers/staging/zram/zram_ioctl.h new file mode 100644 index 0000000..db94bcb --- /dev/null +++ b/drivers/staging/zram/zram_ioctl.h @@ -0,0 +1,42 @@ +/* + * Compressed RAM based swap device + * + * Copyright (C) 2008, 2009, 2010 Nitin Gupta + * + * This code is released using a dual license strategy: BSD/GPL + * You can choose the licence that better fits your requirements. + * + * Released under the terms of 3-clause BSD License + * Released under the terms of GNU General Public License Version 2.0 + * + * Project home: http://compcache.googlecode.com + */ + +#ifndef _RAMZSWAP_IOCTL_H_ +#define _RAMZSWAP_IOCTL_H_ + +struct ramzswap_ioctl_stats { + u64 disksize; /* user specified or equal to backing swap + * size (if present) */ + 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 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% */ + u32 pages_expand_pct; /* no. of incompressible pages */ + u32 pages_stored; + u32 pages_used; + u64 orig_data_size; + u64 compr_data_size; + 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) + +#endif |