Merge patch series "super: retire sget()"

Christian Brauner <brauner@kernel.org> says:

CIFS plus the two ext4 KUnit tests (extents-test, mballoc-test) were the
last in-tree callers, and all three convert cleanly to sget_fc(). That
lets sget() and its prototype come out, taking ~60 lines that only
existed to be kept in lockstep with sget_fc() on every publish-path
change.

* patches from https://patch.msgid.link/20260529-work-sget-v2-0-57bbe08604e4@kernel.org:
  fs: retire sget()
  smb: client: convert cifs_smb3_do_mount() to sget_fc()
  ext4: convert mballoc KUnit test to sget_fc()
  ext4: convert extents KUnit test to sget_fc()

Link: https://patch.msgid.link/20260529-work-sget-v2-0-57bbe08604e4@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>