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zsmalloc: document freeable stats 

commit 618a8a917d upstream.

When freeable class stat was added to classes file (back in 2016) we
forgot to update zsmalloc documentation.  Fix that.

Link: https://lkml.kernel.org/r/20230325024631.2817153-3-senozhatsky@chromium.org
Fixes: 1120ed5483 ("mm/zsmalloc: add `freeable' column to pool stat")
Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sergey Senozhatsky 2023-03-25 11:46:31 +09:00 committed by Greg Kroah-Hartman
parent dc48648699
commit 0d33aa4351
1 changed files with 2 additions and 0 deletions
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Documentation/mm/zsmalloc.rst
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@ -68,6 +68,8 @@ pages_used
the number of pages allocated for the class
pages_per_zspage
the number of 0-order pages to make a zspage
freeable
the approximate number of pages class compaction can free
We assign a zspage to ZS_ALMOST_EMPTY fullness group when n <= N / f, where