Hammer it a bit more in that iterators can be restarted and when that
matters, plus suggest to prefer the locked version whenver.
Also delete the two leftover kerneldoc for static functions plus
sprinkle some more links while at it.
v2: Keep some comments (Christian)
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: linux-media@vger.kernel.org
Cc: linaro-mm-sig@lists.linaro.org
Link: https://patchwork.freedesktop.org/patch/msgid/20211130152756.1388106-1-daniel.vetter@ffwll.ch
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