mirror of https://github.com/torvalds/linux.git
ef56578274
The cgrp_ancestor_storage has two drawbacks: - it's not guaranteed that the member immediately follows struct cgrp in cgroup_root (root cgroup's ancestors[0] might thus point to a padding and not in cgrp_ancestor_storage proper), - this idiom raises warnings with -Wflex-array-member-not-at-end. Instead of relying on the auxiliary member in cgroup_root, define the 0-th level ancestor inside struct cgroup (needed for static allocation of cgrp_dfl_root), deeper cgroups would allocate flexible _low_ancestors[]. Unionized alias through ancestors[] will transparently join the two ranges. The above change would still leave the flexible array at the end of struct cgroup inside cgroup_root, so move cgrp also towards the end of cgroup_root to resolve the -Wflex-array-member-not-at-end. Link: https://lore.kernel.org/r/5fb74444-2fbb-476e-b1bf-3f3e279d0ced@embeddedor.com/ Reported-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Closes: https://lore.kernel.org/r/b3eb050d-9451-4b60-b06c-ace7dab57497@embeddedor.com/ Cc: David Laight <david.laight.linux@gmail.com> Acked-by: Gustavo A. R. Silva <gustavoars@kernel.org> Signed-off-by: Michal Koutný <mkoutny@suse.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
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| .. | ||
| Makefile | ||
| cgroup-internal.h | ||
| cgroup-v1.c | ||
| cgroup.c | ||
| cpuset-internal.h | ||
| cpuset-v1.c | ||
| cpuset.c | ||
| debug.c | ||
| dmem.c | ||
| freezer.c | ||
| legacy_freezer.c | ||
| misc.c | ||
| namespace.c | ||
| pids.c | ||
| rdma.c | ||
| rstat.c | ||