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charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Mon, Dec 02 2024 at 15:47:00 +0530, Greg Kroah-Hartman wrote: > On Mon, Dec 02, 2024 at 03:41:01PM +0530, Siddh Raman Pant wrote: > > From: Yafang Shao > >=20 > > commit d23b5c577715892c87533b13923306acc6243f93 upstream. > >=20 > > At present, when we perform operations on the cgroup root_list, we must > > hold the cgroup_mutex, which is a relatively heavyweight lock. In reali= ty, > > we can make operations on this list RCU-safe, eliminating the need to h= old > > the cgroup_mutex during traversal. Modifications to the list only occur= in > > the cgroup root setup and destroy paths, which should be infrequent in = a > > production environment. In contrast, traversal may occur frequently. > > Therefore, making it RCU-safe would be beneficial. > >=20 > > Signed-off-by: Yafang Shao > > Signed-off-by: Tejun Heo > > [fp: adapt to 5.10 mainly because of changes made by e210a89f5b07 > > ("cgroup.c: add helper __cset_cgroup_from_root to cleanup duplicated > > codes")] > > Signed-off-by: Fedor Pchelkin > > [Shivani: Modified to apply on v5.4.y] > > Signed-off-by: Shivani Agarwal > > Reviewed-by: Siddh Raman Pant >=20 > I'm confused. You do know what signed-off-by means, right? When > sending a patch on, you MUST sign off on it. Even if I'm just *forwarding* the patch already posted on the mailing list? I just added an r-b for the patch because I reviewed it, and did no changes. I'm sorry if I mistook the convention. In that case, the previous patche emails I had sent has the signoff. I had thought that was incorrect. 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