On 09/26/2012 04:50 PM, Minchan Kim wrote:

This patch promotes the slab-based zsmalloc memory allocator
from the staging tree to lib/

zcache/zram depends on this allocator for storing compressed RAM pages
in an efficient way under system wide memory pressure where
high-order (greater than 0) page allocation are very likely to
fail.

For more information on zsmalloc and its internals, read the
documentation at the top of the zsmalloc.c file.

Signed-off-by: Minchan Kim <minchan@kernel.org>
---
 drivers/staging/Kconfig                  |    2 -
 drivers/staging/Makefile                 |    1 -
 drivers/staging/zcache/zcache-main.c     |    4 +-
 drivers/staging/zram/zram_drv.h          |    3 +-
 drivers/staging/zsmalloc/Kconfig         |   10 -
 drivers/staging/zsmalloc/Makefile        |    3 -
 drivers/staging/zsmalloc/zsmalloc-main.c | 1064 ------------------------------
 drivers/staging/zsmalloc/zsmalloc.h      |   43 --
 include/linux/zsmalloc.h                 |   43 ++
 lib/Kconfig                              |    2 +
 lib/Makefile                             |    1 +
 lib/zsmalloc/Kconfig                     |   18 +
 lib/zsmalloc/Makefile                    |    1 +
 lib/zsmalloc/zsmalloc.c                  | 1064 ++++++++++++++++++++++++++++++
 14 files changed, 1132 insertions(+), 1127 deletions(-)
 delete mode 100644 drivers/staging/zsmalloc/Kconfig
 delete mode 100644 drivers/staging/zsmalloc/Makefile
 delete mode 100644 drivers/staging/zsmalloc/zsmalloc-main.c
 delete mode 100644 drivers/staging/zsmalloc/zsmalloc.h
 create mode 100644 include/linux/zsmalloc.h
 create mode 100644 lib/zsmalloc/Kconfig
 create mode 100644 lib/zsmalloc/Makefile
 create mode 100644 lib/zsmalloc/zsmalloc.c

Since there's just one file here, why not just move to lib flatly without creating a new directory?

Thanks,
Wanlong Gao

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