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From: Al Viro <viro@zeniv.linux.org.uk>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Greg KH <gregkh@linuxfoundation.org>,
	Samuel Wu <wusamuel@google.com>,
	linux-fsdevel@vger.kernel.org, brauner@kernel.org, jack@suse.cz,
	raven@themaw.net, miklos@szeredi.hu, neil@brown.name,
	a.hindborg@kernel.org, linux-mm@kvack.org,
	linux-efi@vger.kernel.org, ocfs2-devel@lists.linux.dev,
	kees@kernel.org, rostedt@goodmis.org, linux-usb@vger.kernel.org,
	paul@paul-moore.com, casey@schaufler-ca.com,
	linuxppc-dev@lists.ozlabs.org, john.johansen@canonical.com,
	selinux@vger.kernel.org, borntraeger@linux.ibm.com,
	bpf@vger.kernel.org, clm@meta.com,
	android-kernel-team <android-kernel-team@google.com>
Subject: Re: [PATCH v4 00/54] tree-in-dcache stuff
Date: Tue, 27 Jan 2026 20:14:54 +0000	[thread overview]
Message-ID: <20260127201454.GQ3183987@ZenIV> (raw)
In-Reply-To: <CAHk-=whME4fu2Gn+W7MPiFHqwn51VByhpttf-wHdhAqQAQXpqw@mail.gmail.com>

On Tue, Jan 27, 2026 at 10:39:04AM -0800, Linus Torvalds wrote:
> On Mon, 26 Jan 2026 at 23:42, Greg KH <gregkh@linuxfoundation.org> wrote:
> >
> > Note that I had to revert commit e5bf5ee26663 ("functionfs: fix the
> > open/removal races") from the stable backports, as it was causing issues
> > on the pixel devices it got backported to.  So perhaps look there?
> 
> Hmm. That commit is obviously still upstream, do we understand why it
> caused problems in the backports?

This is all I've seen:

| It has been reported to cause test problems in Android devices.  As the
| other functionfs changes were not also backported at the same time,
| something is out of sync.  So just revert this one for now and it can
| come back in the future as a patch series if it is tested.

My apologies for not following up on that one; Greg, could you give some
references to those reports?


  reply	other threads:[~2026-01-27 20:13 UTC|newest]

Thread overview: 81+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-11-18  5:15 Al Viro
2025-11-18  5:15 ` [PATCH v4 01/54] fuse_ctl_add_conn(): fix nlink breakage in case of early failure Al Viro
2025-11-18  5:15 ` [PATCH v4 02/54] tracefs: fix a leak in eventfs_create_events_dir() Al Viro
2025-11-18  5:15 ` [PATCH v4 03/54] new helper: simple_remove_by_name() Al Viro
2025-11-18  5:15 ` [PATCH v4 04/54] new helper: simple_done_creating() Al Viro
2025-11-18  5:15 ` [PATCH v4 05/54] introduce a flag for explicitly marking persistently pinned dentries Al Viro
2025-11-18  5:15 ` [PATCH v4 06/54] primitives for maintaining persisitency Al Viro
2025-11-18  5:15 ` [PATCH v4 07/54] convert simple_{link,unlink,rmdir,rename,fill_super}() to new primitives Al Viro
2025-11-18  5:15 ` [PATCH v4 08/54] convert ramfs and tmpfs Al Viro
2025-11-18  5:15 ` [PATCH v4 09/54] procfs: make /self and /thread_self dentries persistent Al Viro
2025-11-18  5:15 ` [PATCH v4 10/54] configfs, securityfs: kill_litter_super() not needed Al Viro
2025-11-18  5:15 ` [PATCH v4 11/54] convert xenfs Al Viro
2025-11-18  5:15 ` [PATCH v4 12/54] convert smackfs Al Viro
2025-11-18  5:15 ` [PATCH v4 13/54] convert hugetlbfs Al Viro
2025-11-18  5:15 ` [PATCH v4 14/54] convert mqueue Al Viro
2025-11-18  5:15 ` [PATCH v4 15/54] convert bpf Al Viro
2025-11-18  5:15 ` [PATCH v4 16/54] convert dlmfs Al Viro
2025-11-18  5:15 ` [PATCH v4 17/54] convert fuse_ctl Al Viro
2025-11-18  5:15 ` [PATCH v4 18/54] convert pstore Al Viro
2025-11-18  5:15 ` [PATCH v4 19/54] convert tracefs Al Viro
2025-11-18  5:15 ` [PATCH v4 20/54] convert debugfs Al Viro
2025-11-18  5:15 ` [PATCH v4 21/54] debugfs: remove duplicate checks in callers of start_creating() Al Viro
2025-11-18  5:15 ` [PATCH v4 22/54] convert efivarfs Al Viro
2025-11-18  5:15 ` [PATCH v4 23/54] convert spufs Al Viro
2025-11-18  5:15 ` [PATCH v4 24/54] convert ibmasmfs Al Viro
2025-11-18  5:15 ` [PATCH v4 25/54] ibmasmfs: get rid of ibmasmfs_dir_ops Al Viro
2025-11-18  5:15 ` [PATCH v4 26/54] convert devpts Al Viro
2025-11-18  5:15 ` [PATCH v4 27/54] binderfs: use simple_start_creating() Al Viro
2025-11-18  5:15 ` [PATCH v4 28/54] binderfs_binder_ctl_create(): kill a bogus check Al Viro
2025-11-18  5:15 ` [PATCH v4 29/54] convert binderfs Al Viro
2025-11-18  5:15 ` [PATCH v4 30/54] autofs_{rmdir,unlink}: dentry->d_fsdata->dentry == dentry there Al Viro
2025-11-18  5:15 ` [PATCH v4 31/54] convert autofs Al Viro
2025-11-18  5:15 ` [PATCH v4 32/54] convert binfmt_misc Al Viro
2025-11-18  5:15 ` [PATCH v4 33/54] selinuxfs: don't stash the dentry of /policy_capabilities Al Viro
2025-11-18  5:15 ` [PATCH v4 34/54] selinuxfs: new helper for attaching files to tree Al Viro
2025-11-18  5:15 ` [PATCH v4 35/54] convert selinuxfs Al Viro
2025-11-18  5:15 ` [PATCH v4 36/54] functionfs: don't abuse ffs_data_closed() on fs shutdown Al Viro
2025-11-18  5:15 ` [PATCH v4 37/54] functionfs: don't bother with ffs->ref in ffs_data_{opened,closed}() Al Viro
2025-11-18  5:15 ` [PATCH v4 38/54] functionfs: need to cancel ->reset_work in ->kill_sb() Al Viro
2025-11-18  5:15 ` [PATCH v4 39/54] functionfs: fix the open/removal races Al Viro
2025-11-18  5:15 ` [PATCH v4 40/54] functionfs: switch to simple_remove_by_name() Al Viro
2025-11-18  5:15 ` [PATCH v4 41/54] convert functionfs Al Viro
2025-11-18  5:15 ` [PATCH v4 42/54] gadgetfs: switch to simple_remove_by_name() Al Viro
2025-11-18  5:15 ` [PATCH v4 43/54] convert gadgetfs Al Viro
2025-11-18  5:15 ` [PATCH v4 44/54] hypfs: don't pin dentries twice Al Viro
2025-11-18  5:15 ` [PATCH v4 45/54] hypfs: switch hypfs_create_str() to returning int Al Viro
2025-11-18  5:15 ` [PATCH v4 46/54] hypfs: swich hypfs_create_u64() " Al Viro
2025-11-18  5:15 ` [PATCH v4 47/54] convert hypfs Al Viro
2025-11-18  5:15 ` [PATCH v4 48/54] convert rpc_pipefs Al Viro
2025-11-18  5:15 ` [PATCH v4 49/54] convert nfsctl Al Viro
2025-11-18  5:15 ` [PATCH v4 50/54] convert rust_binderfs Al Viro
2025-11-18  5:16 ` [PATCH v4 51/54] get rid of kill_litter_super() Al Viro
2025-11-18  5:16 ` [PATCH v4 52/54] convert securityfs Al Viro
2025-11-18  5:16 ` [PATCH v4 53/54] kill securityfs_recursive_remove() Al Viro
2025-11-18  5:16 ` [PATCH v4 54/54] d_make_discardable(): warn if given a non-persistent dentry Al Viro
2026-01-27  0:56 ` [PATCH v4 00/54] tree-in-dcache stuff Samuel Wu
2026-01-27  7:42   ` Greg KH
2026-01-27 18:39     ` Linus Torvalds
2026-01-27 20:14       ` Al Viro [this message]
2026-01-28  8:53         ` Greg KH
2026-01-28  2:02     ` Samuel Wu
2026-01-28  4:59       ` Al Viro
2026-01-29  0:58         ` Samuel Wu
2026-01-29  3:23           ` Al Viro
2026-01-29 22:54             ` Al Viro
2026-01-30  1:16               ` Samuel Wu
2026-01-30  7:04                 ` Al Viro
2026-01-30 22:31                   ` Samuel Wu
2026-01-30 23:57                     ` Al Viro
2026-01-31  0:14                       ` Linus Torvalds
2026-01-31  1:08                         ` Al Viro
2026-01-31  1:11                           ` Linus Torvalds
2026-02-01  0:11                             ` Al Viro
2026-01-31  0:59                       ` Al Viro
2026-01-31  1:05                       ` Samuel Wu
2026-01-31  1:18                         ` Al Viro
2026-01-31  2:09                           ` Samuel Wu
2026-01-31  2:43                             ` Al Viro
2026-01-31 19:48                               ` Samuel Wu
2026-01-31 14:58                 ` Krishna Kurapati PSSNV
2026-01-31 20:02                   ` Samuel Wu

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