Re: [PATCH v3 0/4] super: allow waiting without s_umount held

[Christian Brauner <brauner@kernel.org>]

On Fri, 18 Aug 2023 16:00:47 +0200, Christian Brauner wrote:
> Hey everyone,
> 
> This is an attempty to allow concurrent mounters and iterators to wait
> on superblock state changes without having to hold s_umount. This is
> made necessary by recent attempts to open block devices after superblock
> creation and fixing deadlocks due to blkdev_put() trying to acquire
> s_umount while s_umount is already held.
> 
> [...]

Already applied this but didn't send out a notification.

Jan's suggestion to log a warning when freeze/thaw is called on dying
superblock is on top of the series as well:

      super: use higher-level helper for {freeze,thaw}
      https://git.kernel.org/vfs/vfs/c/051178c366bb

---

Applied to the vfs.super branch of the vfs/vfs.git tree.
Patches in the vfs.super branch should appear in linux-next soon.

Please report any outstanding bugs that were missed during review in a
new review to the original patch series allowing us to drop it.

It's encouraged to provide Acked-bys and Reviewed-bys even though the
patch has now been applied. If possible patch trailers will be updated.

Note that commit hashes shown below are subject to change due to rebase,
trailer updates or similar. If in doubt, please check the listed branch.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs.git
branch: vfs.super.fs_supers_lock

[1/4] super: use locking helpers
      https://git.kernel.org/vfs/vfs/c/0ed33598ddf3
[2/4] super: make locking naming consistent
      https://git.kernel.org/vfs/vfs/c/d8ce82efdece
[3/4] super: wait for nascent superblocks
      https://git.kernel.org/vfs/vfs/c/5e8749141521
[4/4] super: wait until we passed kill super
      https://git.kernel.org/vfs/vfs/c/2c18a63b760a