diff options
| author |   Dennis Zhou <dennis@kernel.org> | 2024-10-07 17:19:42 -0700 |
|---|---|---|
| committer |   Andrew Morton <akpm@linux-foundation.org> | 2024-11-06 20:11:11 -0800 |
| commit | 018d24539d9ed7531245a381ba24f5d9e8714682 (patch) | |
| tree | 97e5b9de1f08d65dfedcfbb2aa1451f06e5ee838 /lib | |
| parent | mm: consolidate common checks in hugetlb_get_unmapped_area (diff) | |
| download | wireguard-linux-018d24539d9ed7531245a381ba24f5d9e8714682.tar.xz wireguard-linux-018d24539d9ed7531245a381ba24f5d9e8714682.zip | |
percpu: fix data race with pcpu_nr_empty_pop_pages
Fixes the data race by moving the read to be behind the pcpu_lock. This
is okay because the code (initially) above it will not increase the
empty populated page count because it is populating backing pages that
already have allocations served out of them.
Link: https://lkml.kernel.org/r/20241008001942.8114-1-dennis@kernel.org
Reported-by: kernel test robot <oliver.sang@intel.com>
Closes: https://lore.kernel.org/oe-lkp/202407191651.f24e499d-oliver.sang@intel.com
Signed-off-by: Dennis Zhou <dennis@kernel.org>
Cc: Christoph Lameter <cl@linux.com>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'lib')
0 files changed, 0 insertions, 0 deletions