Re: [RFC] sane access to per-fs metadata (was Re: [PATCH] Documentation/ioctl-number.txt)

[EMAIL PROTECTED] (Chip Salzenberg) writes: > AFAIK, Alex Viro's idea of bindable namespaces provides effective > transaction support *ONLY* if there are per-process bindings. With > per-process bindings, each client that opens a connection does so > through a distinct binding; when that client'

Re: [RFC] sane access to per-fs metadata (was Re: [PATCH] Documentation/ioctl-number.txt)

According to [EMAIL PROTECTED]: >[EMAIL PROTECTED] (Chip Salzenberg) wrote: >>Why not have a kernel thread and use standard RPC techniques like >>sockets? Then you'd not have to invent anything unimportant like >>Yet Another IPC Technique. > >kerneld (kmod's late unlamented predecessor) used to u

Re: [RFC] sane access to per-fs metadata (was Re: [PATCH] Documentation/ioctl-number.txt)

On Sun, 01 Apr 2001 01:01:59 -0800, [EMAIL PROTECTED] (Chip Salzenberg) wrote: >In article you write: >Why not have a kernel thread and use standard RPC techniques like >sockets? Then you'd not have to invent anything unimportant like >Yet An

Re: [RFC] sane access to per-fs metadata (was Re: [PATCH] Documentation/ioctl-number.txt)

In article you write: >With ioctl, I can easily match a response of any kind to a request. I can >even return an English text message if I want to be friendly. But ioctl requires allocation of numbers. Ugly and hard to scale. Alex Viro's i

Re: [RFC] sane access to per-fs metadata (was Re: [PATCH]Documentation/ioctl-number.txt)

On Fri, 23 Mar 2001, Bryan Henderson wrote: > How it can be used? Well, say it you've mounted JFS on /usr/local > >% mount -t jfsmeta none /mnt -o jfsroot=/usr/local > >% ls /mnt > >stats control bootcode whatever_I_bloody_want > >% cat /mnt/stats > >master is on /usr/local > >fragmentation

Re: [RFC] sane access to per-fs metadata (was Re: [PATCH] Documentation/ioctl-number.txt)

On Fri, Mar 23, 2001 at 09:56:47AM -0700, Bryan Henderson wrote: > There's a lot of cool simplicity in this, both in implementation and > application, but it leaves something to be desired in functionality. This > is partly because the price you pay for being able to use existing, > well-worn

Re: [RFC] sane access to per-fs metadata (was Re: [PATCH] Documentation/ioctl-number.txt)

How it can be used? Well, say it you've mounted JFS on /usr/local >% mount -t jfsmeta none /mnt -o jfsroot=/usr/local >% ls /mnt >stats control bootcode whatever_I_bloody_want >% cat /mnt/stats >master is on /usr/local >fragmentation = 5% >696942 reads, yodda, yodda >% echo "defrag 69 whatev

Re: [RFC] sane access to per-fs metadata (was Re: [PATCH]Documentation/ioctl-number.txt)

Al, I didn't know that creating file system ioctl's was such a hot topic. Since the functions I want to implement are for a very specific purpose (I don't expect anything except the JFS utilities to invoke them), I would expect an ioctl to be an appropriate vehicle. If not ioctl's, why not procf

Re: [RFC] sane access to per-fs metadata (was Re: [PATCH] Documentation/ioctl-number.txt)

Alexander Viro <[EMAIL PROTECTED]> writes: > IOW, you can get normal filesystem view (meaning that you have all usual > UNIX toolkit available) for per-fs control stuff. And keep the ability to > do proper locking - it's the same driver that handles the main fs and you > have access to superblock

Re: [PATCH] Documentation/ioctl-number.txt

Alexander Viro wrote: > > On Thu, 22 Mar 2001, Dave Kleikamp wrote: > > > Linus, > > I would like to reserve a block of 32 ioctl's for the JFS filesystem. > > Details, please? More specifically, what kind of objects are these ioctls > applied to? I don't have all the details worked out yet, bu

Re: [PATCH] Documentation/ioctl-number.txt

On Thu, 22 Mar 2001, Dave Kleikamp wrote: > Linus, > I would like to reserve a block of 32 ioctl's for the JFS filesystem. Details, please? More specifically, what kind of objects are these ioctls applied to? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the bod

[PATCH] Documentation/ioctl-number.txt

Linus, I would like to reserve a block of 32 ioctl's for the JFS filesystem. Thank you. Dave Kleikamp --- linux/Documentation/ioctl-number.txt-orig Tue Feb 13 16:13:42 2001 +++ linux/Documentation/ioctl-number.txtThu Mar 22 14:53:40 2001 @@ -86,6 +86,7 @@ 'F'all linux/fb.h 'I