In message <20080430101704.9cbd6384.akpm@linux-foundation.org>, Andrew Morton writes:
[...[
quoted text
> Can we avoid having to think?
> 
> void fsstack_copy_inode_size(struct inode *dst, const struct inode *src)
> {
> 	blkcnt_t i_blocks;
> 	loff_t i_size;
> 
> 	i_size = i_size_read(src);
> 	spin_lock_32bit(&src->i_lock);
> 	i_blocks = src->i_blocks;
> 	spin_unlock_32bit(&src->i_lock);
> 
> 	i_size_write(dst, i_size);
> 	spin_lock_32bit(&dst->i_lock)
> 	dst->i_blocks = i_blocks;
> 	spin_unlock_32bit(&dst->i_lock)
> }

I can't find spin_[um]lock_32bit anywhere (checkd latest mmotm and linus's
tree).  I therefore assume this was just your way of saying I should:

#if BITS_PER_LONG == 32
	spin_unlock(&dst->i_lock);
#endif

Erez.
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