Re: [RFC v2 03/10] vfs: add one new mount option '-o hottrack'

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Sun, Sep 23, 2012 at 08:56:28PM +0800, zwu.kernel@xxxxxxxxx wrote:
> From: Zhi Yong Wu <wuzhy@xxxxxxxxxxxxxxxxxx>
> 
>   Introduce one new mount option '-o hottrack',
> and add its parsing support.
>   Its usage looks like:
>    mount -o hottrack
>    mount -o nouser,hottrack
>    mount -o nouser,hottrack,loop
>    mount -o hottrack,nouser

I think that this option parsing should be done by the filesystem,
even though the tracking functionality is in the VFS. That way ony
the filesystems that can use the tracking information will turn it
on, rather than being able to turn it on for everything regardless
of whether it is useful or not.

Along those lines, just using a normal superblock flag to indicate
it is active (e.g. MS_HOT_INODE_TRACKING in sb->s_flags) means you
don't need to allocate the sb->s_hot_info structure just to be able
to check whether we are tracking hot inodes or not.

This then means the hot inode tracking for the superblock can be
initialised by the filesystem as part of it's fill_super method,
along with the filesystem specific code that will use the hot
tracking information the VFS gathers....

Cheers,

Dave.
-- 
Dave Chinner
david@xxxxxxxxxxxxx
--
To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Index of Archives]     [Linux Ext4 Filesystem]     [Union Filesystem]     [Filesystem Testing]     [Ceph Users]     [Ecryptfs]     [AutoFS]     [Kernel Newbies]     [Share Photos]     [Security]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux Cachefs]     [Reiser Filesystem]     [Linux RAID]     [Samba]     [Device Mapper]     [CEPH Development]
  Powered by Linux