diff options
Diffstat (limited to '')
| -rw-r--r-- | freebsd/sys/vm/uma_int.h | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/freebsd/sys/vm/uma_int.h b/freebsd/sys/vm/uma_int.h index 0fbc0512..0429bac6 100644 --- a/freebsd/sys/vm/uma_int.h +++ b/freebsd/sys/vm/uma_int.h @@ -139,9 +139,17 @@ #define UMA_MAX_WASTE 10 /* - * Size of memory in a not offpage slab available for actual items. + * Actual size of uma_slab when it is placed at an end of a page + * with pointer sized alignment requirement. */ -#define UMA_SLAB_SPACE (UMA_SLAB_SIZE - sizeof(struct uma_slab)) +#define SIZEOF_UMA_SLAB ((sizeof(struct uma_slab) & UMA_ALIGN_PTR) ? \ + (sizeof(struct uma_slab) & ~UMA_ALIGN_PTR) + \ + (UMA_ALIGN_PTR + 1) : sizeof(struct uma_slab)) + +/* + * Size of memory in a not offpage single page slab available for actual items. + */ +#define UMA_SLAB_SPACE (PAGE_SIZE - SIZEOF_UMA_SLAB) /* * I doubt there will be many cases where this is exceeded. This is the initial |