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Docs/mm/damon/design: update for nr_snapshots damos stat

Update DAMON design document for the newly added damos stat, nr_snapshots.

Link: https://lkml.kernel.org/r/20251216080128.42991-4-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

authored by

SeongJae Park and committed by
Andrew Morton ee7f5d19 83a741b9

+2
+2
Documentation/mm/damon/design.rst
··· 718 718 - ``nr_applied``: Total number of regions that the scheme is applied. 719 719 - ``sz_applied``: Total size of regions that the scheme is applied. 720 720 - ``qt_exceeds``: Total number of times the quota of the scheme has exceeded. 721 + - ``nr_snapshots``: Total number of DAMON snapshots that the scheme is tried to 722 + be applied. 721 723 722 724 "A scheme is tried to be applied to a region" means DAMOS core logic determined 723 725 the region is eligible to apply the scheme's :ref:`action