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| author |   Eric Dumazet <edumazet@google.com> | 2014-10-10 04:48:17 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2014-10-10 15:37:28 -0400 |
| commit | 98226208c8a1fe5834e92d827a2a1e8051a17943 (patch) | |
| tree | 09bc0b1ebf516dcba2d21b93d98dc0e3d2bc3181 /tools/perf/scripts/python/call-graph-from-postgresql.py | |
| parent | ixgbe: fix race accessing page->_count (diff) | |
| download | linux-dev-98226208c8a1fe5834e92d827a2a1e8051a17943.tar.xz linux-dev-98226208c8a1fe5834e92d827a2a1e8051a17943.zip | |
mlx4: fix race accessing page->_count
This is illegal to use atomic_set(&page->_count, ...) even if we 'own'
the page. Other entities in the kernel need to use get_page_unless_zero()
to get a reference to the page before testing page properties, so we could
loose a refcount increment.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-postgresql.py')
0 files changed, 0 insertions, 0 deletions