On Wed, 29 Nov 2006 09:20:24 +0000 Russell King <rmk+lkml@xxxxxxxxxxxxxxxx> wrote: > What I'm looking for is confirmation of the semantics of > find_next_zero_bit() What are the existing semantics? I see no documentation in any of the architectures I've looked at. That's my point. >From a quick read of fs/ext2/balloc.c ext2_find_next_zero_bit(base, size, offset) appears to expect that base is the start of the memory buffer, size is the number of bits at *base and offset is the bit at which to start the search, relative to base. If a zero bit is found it will return the offset of that bit relative to base. It will return some number greater than `size' if no zero-bit was found. Whether that's how all the implementors interpreted it is anyone's guess. Presumably the architectures all do roughly the same thing. > <extremely frustrated> Well likewise. It appears that nobody (and about 20 people have implemented these things) could be bothered getting off ass and documenting the pathetic thing. - To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
