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| author | Nhat Pham <nphamcs@gmail.com> | 2023-01-06 14:00:16 -0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-01-11 16:14:21 -0800 |
| commit | 1beb8ae302a01fb487787f5a4fb97cf5338a86c1 (patch) | |
| tree | 8b43425951fdc53b6a1f38759e7632d3573bbc29 /Documentation | |
| parent | fed15f1345dc8a7fc8baa81e8b55c3ba010d7f4b (diff) | |
| download | linux-stable-1beb8ae302a01fb487787f5a4fb97cf5338a86c1.tar.gz linux-stable-1beb8ae302a01fb487787f5a4fb97cf5338a86c1.tar.bz2 linux-stable-1beb8ae302a01fb487787f5a4fb97cf5338a86c1.zip | |
Docs/admin-guide/mm/zswap: remove zsmalloc's lack of writeback warning
Writeback has been implemented for zsmalloc, so this warning no longer
holds.
Link: https://lkml.kernel.org/r/20230106220016.172303-1-nphamcs@gmail.com
Fixes: 9997bc017549a ("zsmalloc: implement writeback mechanism for zsmalloc")
Suggested-by: Thomas Weißschuh <linux@weissschuh.net>
Signed-off-by: Nhat Pham <nphamcs@gmail.com>
Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/admin-guide/mm/zswap.rst | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/Documentation/admin-guide/mm/zswap.rst b/Documentation/admin-guide/mm/zswap.rst index f67de481c7f6..6dd74a18268b 100644 --- a/Documentation/admin-guide/mm/zswap.rst +++ b/Documentation/admin-guide/mm/zswap.rst @@ -70,9 +70,7 @@ e.g. ``zswap.zpool=zbud``. It can also be changed at runtime using the sysfs The zbud type zpool allocates exactly 1 page to store 2 compressed pages, which means the compression ratio will always be 2:1 or worse (because of half-full zbud pages). The zsmalloc type zpool has a more complex compressed page -storage method, and it can achieve greater storage densities. However, -zsmalloc does not implement compressed page eviction, so once zswap fills it -cannot evict the oldest page, it can only reject new pages. +storage method, and it can achieve greater storage densities. When a swap page is passed from frontswap to zswap, zswap maintains a mapping of the swap entry, a combination of the swap type and swap offset, to the zpool |