lkml.org 
[lkml]   [2001]   [Sep]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Implementing a new network based file system
> Jan Harkes mentioned that getattr() don't have to be implemented (and 
> isn't implemented by nfs, smbfs and coda). Where do the VFS knows
> about the attributes the users see? I haven't found any function in
> inode_operation which gets a struct iattr* as parameter except
> getattr() and setattr().

It should use getattr, but it merely reads them directly from the
inode structure. You just have to keep it up-to-date

> I suppose readpage() is handled in the same way. What about syncpage?

Readpage is is similar, except there's nothing like prepare and commit read.

I have not understood syncpage yet. Maybe someone else could elighten this bit.

> I have another question about the file_operations: How is locking
> (file locking => file_operations->lock()) done by the VFS. I've read
> about there is a flag in the inode structure which is set by flock().
> But this lock isn't known by the server. Is file_operations->lock()
> called when defined?

Have not get to this yet either.

--------------------------------------------------------------------------------
- Jan Hudec `Bulb' <bulb@ucw.cz>
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:03    [W:0.050 / U:14.136 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site