Hi Nikita,
On Wed, Jun 14, 2006 at 02:29:39PM +0400, Nikita Danilov wrote:
> Sorry, but why this operation is needed? Generic code (in fs/*.c)
> doesn't use ->i_blksize at all. If XFS wants to provide per-inode
> st_blksize, all it has to do is to store preferred buffer size in its
> file system specific inode (struct xfs_inode), and use something
> different from generic_fillattr() as its ->i_op->getattr() callback
> (xfs_vn_getattr()).
We already do this. The original questions were related to whether
i_blksize and i_blkbits need to be per-inode or per-filesystem, and
thats what I was trying to answer...
| 1) Move i_blksize (optimal size for I/O, reported by the stat system
| call). Is there any reason why this needs to be per-inode, instead
| of per-filesystem?
| 2) Move i_blkbits (blocksize for doing direct I/O in bits) to struct
| super. Again, why is this per-inode?
As to whether a new inode operation is useful/needed - *shrug* - not
really my call, I was saying we can work with whatever ends up being
the final solution, provided it keeps per-inode granularity.
cheers.
--
Nathan
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