Creates RAM based block devices: /dev/zramX (X = 0, 1, ...). Pages written to these disks are compressed and stored in memory itself. These disks allow very fast I/O and compression provides good amounts of memory savings. This is enhancement over existing ramzswap driver which creates virtual block devices (/dev/ramzswapX) which could be used only as swap disks. Now, with the ability to handle any kind of I/O request, zram devices have lot more use cases: - /tmp storage - various caches under /var - swap disks - maybe even more! :) Performance numbers can be found at: http://code.google.com/p/compcache/wiki/zramperf Patch 1 makes core changes to support handling generic I/O requests. Subsequent patches rename ramzswap* files to zram* and similar changes in code and documentation. Nitin Gupta (3): Support generic I/O requests Rename ramzswap to zram in code. Rename ramzswap to zram in documentation drivers/staging/Kconfig | 2 +- drivers/staging/Makefile | 2 +- drivers/staging/ramzswap/Kconfig | 21 - drivers/staging/ramzswap/Makefile | 3 - drivers/staging/ramzswap/ramzswap.txt | 51 -- drivers/staging/ramzswap/ramzswap_drv.c | 837 ----------------------------- drivers/staging/ramzswap/ramzswap_drv.h | 167 ------ drivers/staging/ramzswap/ramzswap_ioctl.h | 42 -- drivers/staging/ramzswap/xvmalloc.c | 507 ----------------- drivers/staging/ramzswap/xvmalloc.h | 30 - drivers/staging/ramzswap/xvmalloc_int.h | 86 --- drivers/staging/zram/Kconfig | 24 + drivers/staging/zram/Makefile | 3 + drivers/staging/zram/xvmalloc.c | 507 +++++++++++++++++ drivers/staging/zram/xvmalloc.h | 30 + drivers/staging/zram/xvmalloc_int.h | 86 +++ drivers/staging/zram/zram.txt | 62 +++ drivers/staging/zram/zram_drv.c | 809 ++++++++++++++++++++++++++++ drivers/staging/zram/zram_drv.h | 167 ++++++ drivers/staging/zram/zram_ioctl.h | 42 ++ 20 files changed, 1732 insertions(+), 1746 deletions(-) delete mode 100644 drivers/staging/ramzswap/Kconfig delete mode 100644 drivers/staging/ramzswap/Makefile delete mode 100644 drivers/staging/ramzswap/ramzswap.txt delete mode 100644 drivers/staging/ramzswap/ramzswap_drv.c delete mode 100644 drivers/staging/ramzswap/ramzswap_drv.h delete mode 100644 drivers/staging/ramzswap/ramzswap_ioctl.h delete mode 100644 drivers/staging/ramzswap/xvmalloc.c delete mode 100644 drivers/staging/ramzswap/xvmalloc.h delete mode 100644 drivers/staging/ramzswap/xvmalloc_int.h create mode 100644 drivers/staging/zram/Kconfig create mode 100644 drivers/staging/zram/Makefile create mode 100644 drivers/staging/zram/xvmalloc.c create mode 100644 drivers/staging/zram/xvmalloc.h create mode 100644 drivers/staging/zram/xvmalloc_int.h create mode 100644 drivers/staging/zram/zram.txt create mode 100644 drivers/staging/zram/zram_drv.c create mode 100644 drivers/staging/zram/zram_drv.h create mode 100644 drivers/staging/zram/zram_ioctl.h _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/devel
