> kdev_t dev = swap_inode->i_rdev;
> struct block_device_operations *bdops;
>
> p->swap_device = dev;
> set_blocksize(dev, PAGE_SIZE);
>
> I don't know much at all about the inode structure, but doesn't this set
> the block size of the originating filesystem containing the inode rather
> than the block device that inode happens to be pointing to? That would
man 2 stat
i_rdev is equivalent of st_rdev, i_dev - of st_dev.
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