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Subject[PATCH] doc: cgroup: add f2fs and xfs to supported list for writeback
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f2fs and xfs have both added support for cgroup writeback:

578c647 f2fs: implement cgroup writeback support
adfb5fb xfs: implement cgroup aware writeback

so add them to the supported list in the docs.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
---

TBH I wonder about the wisdom of having this detail in
the doc, as it apparently gets missed quite often ...

diff --git a/Documentation/admin-guide/cgroup-v2.rst b/Documentation/admin-guide/cgroup-v2.rst
index ce3e05e..4f82afa 100644
--- a/Documentation/admin-guide/cgroup-v2.rst
+++ b/Documentation/admin-guide/cgroup-v2.rst
@@ -1684,9 +1684,9 @@ per-cgroup dirty memory states are examined and the more restrictive
of the two is enforced.

cgroup writeback requires explicit support from the underlying
-filesystem. Currently, cgroup writeback is implemented on ext2, ext4
-and btrfs. On other filesystems, all writeback IOs are attributed to
-the root cgroup.
+filesystem. Currently, cgroup writeback is implemented on ext2, ext4,
+btrfs, f2fs, and xfs. On other filesystems, all writeback IOs are
+attributed to the root cgroup.

There are inherent differences in memory and writeback management
which affects how cgroup ownership is tracked. Memory is tracked per
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