Re: [PATCH v5 05/21] nfsd: update the fsnotify mark when setting or removing a dir delegation

["Chuck Lever" <cel@kernel.org>]

On Wed, Jun 10, 2026, at 9:49 AM, Jeff Layton wrote:
> On Mon, 2026-06-08 at 12:38 -0400, Chuck Lever wrote:

>> > diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
>> > index 2a34ba457b74..efbc99f0a965 100644
>> > --- a/fs/nfsd/nfs4state.c
>> > +++ b/fs/nfsd/nfs4state.c
>> > @@ -1246,6 +1246,38 @@ static void 
>> > nfsd4_finalize_deleg_timestamps(struct nfs4_delegation *dp, struct f
>> >  	nfsd_update_cmtime_attr(f, ATTR_ATIME);
>> >  }
>> > 
>> > +static void nfsd_fsnotify_recalc_mask(struct nfsd_file *nf)
>> 
>> Since nfsd_fsnotify_recalc_mask() takes a single struct nfsd_file
>> as an argument, should this function reside in fs/nfsd/filecache.c
>> instead? The question might reflect my misunderstanding of the
>> new function's purpose.
>> 
>
> The only caller is in this file, so by keeping it here we can make it
> static. I can change that if you'd prefer it be in filecache.c.

My thought was that the new function is accessing and modifying
the internals of an nfsd_file -- it contains local knowledge about
how the filecache manages fs notifications.


>> > +{
>> > +	struct inode *inode = file_inode(nf->nf_file);
>> > +	u32 lease_mask, set = 0, clear = 0;
>> > +	struct fsnotify_mark *mark;
>> > +
>> > +	/* This is only needed when adding or removing dir delegs */
>> > +	if (!S_ISDIR(inode->i_mode) || !nf->nf_mark)
>> > +		return;
>> > +
>> > +	/* Set up notifications for any ignored delegation events */
>> > +	lease_mask = inode_lease_ignore_mask(inode);
>> > +	mark = &nf->nf_mark->nfm_mark;
>> > +
>> > +	if (lease_mask & FL_IGN_DIR_CREATE)
>> > +		set |= FS_CREATE | FS_MOVED_TO;
>> > +	else
>> > +		clear |= FS_CREATE | FS_MOVED_TO;
>> > +
>> > +	if (lease_mask & FL_IGN_DIR_DELETE)
>> > +		set |= FS_DELETE | FS_MOVED_FROM;
>> > +	else
>> > +		clear |= FS_DELETE | FS_MOVED_FROM;
>> > +
>> > +	if (lease_mask & FL_IGN_DIR_RENAME)
>> > +		set |= FS_RENAME;
>> > +	else
>> > +		clear |= FS_RENAME;
>> > +
>> > +	fsnotify_modify_mark_mask(mark, set, clear);
>> > +}
>> > +
>> >  static void nfs4_unlock_deleg_lease(struct nfs4_delegation *dp)
>> >  {
>> >  	struct nfs4_file *fp = dp->dl_stid.sc_file;


-- 
Chuck Lever