-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 2/13/2012 4:50 PM, Vivek Goyal wrote: > So if a user anyway does not specify the start of sector, then > tools shall have to first read it and then call the ioctl. If > anyway tools are specifying, there is no much scope of screwing up > the things? Tools certainly should know where the partition starts. I already have patched parted and partx to pass the current size, which they had trivially available. Making sure of that is a good sanity check to guard against, for instance, resizing the wrong partition. > Even if we allow changing start at some point of time, then IOCTL > can remain the same and just the implementation will change in a > backward compatible manner. Old tools still will continue to work > as they have always been, and new ones can start passing "start" > too. > > So I really did not find passing and checking "start" of partition > very appealing. That is exactly why passing and checking start is required. If it is entirely ignored, then the interface can not start using it in the future in a backward compatible way, because user mode tools will have grown used to passing in any kind of garbage, so if the kernel starts using it to alter the start position of the partition, older tools would randomly and accidentally be shifting the the start of partitions they just mean to change the length of. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.17 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iQEcBAEBAgAGBQJPOYw5AAoJEJrBOlT6nu75CV4H/2vyZwujRqb+mqTAfQ+/XJE7 E850b+MOFZEQEoKQy+XAeu15pmm/TIa8NTk83kBeoQb30P2sU814+rJjbMKpZ9x/ xc8DZVC+DdnLLJ8a9aQw5feV0nmy102QrL0CWS+Wi6vS3DLlLCQQ+nv7AZ1jPV0Z NPzqtmI/zBopf/F2IrL+5DLD9TAi7mf+Yv5IBb7w2JQSiU9LoBo9TTMJhPAhaqtC ihqSJ0Q/t0DG3WacK+8fwh6Jyta1Bx+YsoUzYijtsaH6GQ1zbe+3c44T1JMI+Zvq 30M8V7y1BsLhp+lfZSUlC5YvPpu7gCJ1lg2fpMz56q2DENURj3L1HkdFwPwfLcw= =TTAk -----END PGP SIGNATURE----- -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
