Messages in this thread |  | | From | Sergey Senozhatsky <> | Subject | [PATCHv6 0/6] add compressing abstraction and multi stream support | Date | Fri, 21 Feb 2014 14:50:37 +0300 |
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This patchset introduces zcomp compression backend abstraction adding ability to support compression algorithms other than LZO; support for multi compression streams, making parallel compressions possible.
v5->v6 (reviewed by Minchan Kim): -- handle single compression stream case separately, using mutex locking, to address perfomance regression -- handle multi compression stream using spin lock and wait_event()/wake_up() -- make multi compression stream support configurable (ZRAM_MULTI_STREAM config option)
v4->v5 (reviewed by Minchan Kim): -- renamed zcomp buffer_lock; removed src len and dst len from compress() and decompress(); not using term `buffer' and `workmem' in code and documentation; define compress() and decompress() functions for LZO backend; not using goto's; do not put idle zcomp_strm to idle list tail.
v3->v4: -- renamed compression backend and working memory structs as requested by Minchan Kim; fixed several issues noted by Minchan Kim.
Sergey Senozhatsky (6): zram: introduce compressing backend abstraction zram: use zcomp compressing backends zram: factor out single stream compression zram: add multi stream functionality zram: enalbe multi stream compression support in zram zram: document max_comp_streams
Documentation/ABI/testing/sysfs-block-zram | 9 +- Documentation/blockdev/zram.txt | 24 ++- drivers/block/zram/Kconfig | 10 ++ drivers/block/zram/Makefile | 2 +- drivers/block/zram/zcomp.c | 271 +++++++++++++++++++++++++++++ drivers/block/zram/zcomp.h | 56 ++++++ drivers/block/zram/zcomp_lzo.c | 48 +++++ drivers/block/zram/zram_drv.c | 103 +++++++---- drivers/block/zram/zram_drv.h | 10 +- 9 files changed, 486 insertions(+), 47 deletions(-) create mode 100644 drivers/block/zram/zcomp.c create mode 100644 drivers/block/zram/zcomp.h create mode 100644 drivers/block/zram/zcomp_lzo.c
-- 1.9.0.291.g027825b
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