Re: zfs question about atime update

[Jason Thorpe <thorpej%me.com@localhost>]

> On Mar 17, 2026, at 5:36 AM, Takashi YAMAMOTO <yamt9999%gmail.com@localhost> wrote:
> 
> hi,
> 
> our zfs has a logic to flush atime updates in zfs_netbsd_sync:
>>      /*
>>       * On NetBSD, we need to push out atime updates.  Solaris does
>>       * this during VOP_INACTIVE, but that does not work well with the
>>       * BSD VFS, so we do it in batch here.
>>       */
> 
> does anyone here remember why it "doesn't work well with the BSD VFS"?
> 
> i'm running a kernel with a local patch to put it back to VOP_INACTIVE.
> i haven't noticed anything wrong with it so far.

Indeed, seems like a fine place to do it.  In fact, I’d go so far as to say it should be done even lazier than INACTIVE; do it in RECLAIM.

-- thorpej