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| author | Al Viro <viro@zeniv.linux.org.uk> | 2025-08-26 16:35:55 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-10-19 16:37:44 +0200 |
| commit | 7381cd12252565a83f5060ee7e9bf3aa40e9265a (patch) | |
| tree | 498a93c5a6669c1cdfa243e2efcb3ed3683b17a4 /include/net/aligned_data.h | |
| parent | b7b12f5e02e30f015888ce86cad88a8a62e61534 (diff) | |
mnt_ns_tree_remove(): DTRT if mnt_ns had never been added to mnt_ns_list
[ Upstream commit 38f4885088fc5ad41b8b0a2a2cfc73d01e709e5c ]
Actual removal is done under the lock, but for checking if need to bother
the lockless RB_EMPTY_NODE() is safe - either that namespace had never
been added to mnt_ns_tree, in which case the the node will stay empty, or
whoever had allocated it has called mnt_ns_tree_add() and it has already
run to completion. After that point RB_EMPTY_NODE() will become false and
will remain false, no matter what we do with other nodes in the tree.
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include/net/aligned_data.h')
0 files changed, 0 insertions, 0 deletions