From: Al Viro <viro@ZenIV.linux.org.uk>
To: Nick Piggin <npiggin@kernel.dk>
Cc: sedat.dilek@gmail.com, systemd-devel@lists.freedesktop.org,
linux-fsdevel@vger.kernel.org, linux-next@vger.kernel.org,
eparis@redhat.com
Subject: Re: [patch] cgroup fs: avoid switching ->d_op on live dentry
Date: Tue, 21 Dec 2010 18:25:51 +0000 [thread overview]
Message-ID: <20101221182551.GL19804@ZenIV.linux.org.uk> (raw)
In-Reply-To: <20101221085538.GA9133@amd>
On Tue, Dec 21, 2010 at 07:55:38PM +1100, Nick Piggin wrote:
> On Tue, Dec 21, 2010 at 09:44:40AM +0100, Sedat Dilek wrote:
> > Against linux-next (next-20101210) it should look like:
>
> Yep, I'll rebase my tree with the fix shortly.
>
> >
> > $ diff -Naur cgroup-fix/cgroup-fs-avoid-switching-d_op-on-live-dentry.patch
> > cgroup-fix/cgroup-fs-avoid-switching-d_op-on-live-dentry-v2.patch
> > --- cgroup-fix/cgroup-fs-avoid-switching-d_op-on-live-dentry.patch
> > 2010-12-21 09:31:38.649601964 +0100
> > +++ cgroup-fix/cgroup-fs-avoid-switching-d_op-on-live-dentry-v2.patch
> > 2010-12-21 09:40:21.151033232 +0100
> > @@ -83,7 +83,7 @@
> > inode->i_size = 0;
> > inode->i_fop = &cgroup_file_operations;
> > }
> > -- dentry->d_op = &cgroup_dops;
> > +- d_set_d_op(dentry, &cgroup_dops);
> > d_instantiate(dentry, inode);
> > dget(dentry); /* Extra count - pin the dentry in core */
> > return 0;
How about not doing that d_set_d_op() at all? See #d_op in vfs-2.6.git;
just set ->s_d_op to that once and be done with that. No need to reassign
it on a live dentry...
next prev parent reply other threads:[~2010-12-21 18:25 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-21 8:44 [patch] cgroup fs: avoid switching ->d_op on live dentry Sedat Dilek
2010-12-21 8:55 ` Nick Piggin
2010-12-21 13:35 ` Sedat Dilek
2010-12-21 18:25 ` Al Viro [this message]
2010-12-21 18:57 ` Sedat Dilek
2010-12-22 3:11 ` Nick Piggin
2010-12-22 3:31 ` Sedat Dilek
2010-12-22 4:38 ` Sedat Dilek
2010-12-21 15:12 ` Sedat Dilek
2010-12-21 15:28 ` Sedat Dilek
2010-12-21 17:56 ` Sedat Dilek
-- strict thread matches above, loose matches on Subject: below --
2010-12-21 7:12 Nick Piggin
2010-12-21 9:04 ` Paul Menage
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