Re: 2.5 'what to expect'

Maneesh Soni (
Mon, 14 Jul 2003 12:21:16 +0530

Hi Dave,

Can you add the following two points appended to the Generic VFS changes list?


On Fri, Jul 11, 2003 at 02:04:59PM +0000, Dave Jones wrote:
> Generic VFS changes.
> ~~~~~~~~~~~~~~~~~~~~
> - Since Linux 2.5.1 it is possible to atomically move a subtree to
> another place. The call is...
> mount --move olddir newdir
> - Since 2.5.43, dmask=value sets the umask applied to directories only.
> The default is the umask of the current process.
> The fmask=value sets the umask applied to regular files only.
> Again, the default is the umask of the current process.
- Since 2.5.62, dcache lookup is dcache_lock free. This does not affect
normal filesystems as long as they follow proper dcache interfaces. Care
should be taken (like holding per dentry lock) if one is racing with
d_lookup bringing a new dentry in dcache.
- Since 2.5.75-bk1 onwards separate lock is used for vfsmounts instead of

Maneesh Soni
IBM Linux Technology Center, 
IBM India Software Lab, Bangalore.
Phone: +91-80-5044999 email:
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