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| author | Seth Jennings <sjenning@linux.vnet.ibm.com> | 2012-03-05 11:33:23 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-03-07 13:31:28 -0800 |
| commit | b9ed4f6c9a5ed2358293a92d8b3b268f28b6f2b8 (patch) | |
| tree | 316c9b026cf9e90c2543d71f2e640d7c72e119b1 /drivers/staging/zsmalloc | |
| parent | 6e00ec00b1a76a199b8c0acae401757b795daf57 (diff) | |
| download | blackbird-obmc-linux-b9ed4f6c9a5ed2358293a92d8b3b268f28b6f2b8.tar.gz blackbird-obmc-linux-b9ed4f6c9a5ed2358293a92d8b3b268f28b6f2b8.zip | |
staging: zsmalloc: change ZS_MIN_ALLOC_SIZE
This patch ensures that the value of ZS_MIN_ALLOC_SIZE, for the
PAGE_SIZE and MAX_PHYSMEM_BITS on the system, allows for all
possible object ids in the lowest storage class to be encoded
in the object handle.
Signed-off-by: Seth Jennings <sjenning@linux.vnet.ibm.com>
Acked-by: Nitin Gupta <ngupta@vflare.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/zsmalloc')
| -rw-r--r-- | drivers/staging/zsmalloc/zsmalloc_int.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/staging/zsmalloc/zsmalloc_int.h b/drivers/staging/zsmalloc/zsmalloc_int.h index ffb272f89343..92eefc663afc 100644 --- a/drivers/staging/zsmalloc/zsmalloc_int.h +++ b/drivers/staging/zsmalloc/zsmalloc_int.h @@ -58,8 +58,10 @@ #define OBJ_INDEX_BITS (BITS_PER_LONG - _PFN_BITS) #define OBJ_INDEX_MASK ((_AC(1, UL) << OBJ_INDEX_BITS) - 1) +#define MAX(a, b) ((a) >= (b) ? (a) : (b)) /* ZS_MIN_ALLOC_SIZE must be multiple of ZS_ALIGN */ -#define ZS_MIN_ALLOC_SIZE 32 +#define ZS_MIN_ALLOC_SIZE \ + MAX(32, (ZS_MAX_PAGES_PER_ZSPAGE << PAGE_SHIFT >> OBJ_INDEX_BITS)) #define ZS_MAX_ALLOC_SIZE PAGE_SIZE /* |
