On 2011-03-17, at 12:50 PM, Lukas Czerner wrote:
> +#undef offsetof
> +#ifdef __compiler_offsetof
> +#define offsetof(TYPE,MEMBER) __compiler_offsetof(TYPE,MEMBER)
> +#else
> +#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
> +#endif
This may as well go into a more common header like lib/ext2fs/ext2fs.h, since I see offsetof() is #defined 5 separate times in the e2fsprogs code already.
> +#define container_of(ptr, type, member) ({ \
> + const typeof( ((type *)0)->member ) *__mptr = (ptr); \
> + (type *)( (char *)__mptr - offsetof(type,member) );})
Same.
> +#define rb_parent(r) ((struct rb_node *)((r)->rb_parent_color & ~3))
> +#define rb_color(r) ((r)->rb_parent_color & 1)
> +#define rb_is_red(r) (!rb_color(r))
> +#define rb_is_black(r) rb_color(r)
> +#define rb_set_red(r) do { (r)->rb_parent_color &= ~1; } while (0)
> +#define rb_set_black(r) do { (r)->rb_parent_color |= 1; } while (0)
> +
> +#define RB_ROOT (struct rb_root) { NULL, }
> +#define rb_entry(ptr, type, member) container_of(ptr, type, member)
The indenting here is a bit broken, but I see it is the same in the upstream kernel code, so it probably shouldn't be changed just for e2fsprogs.
Cheers, Andreas
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