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| author |   Will Deacon <will.deacon@arm.com> | 2018-02-19 14:55:55 +0000 |
|---|---|---|
| committer |   Al Viro <viro@zeniv.linux.org.uk> | 2018-02-25 12:51:10 -0500 |
| commit | 8cc07c808c9d595e81cbe5aad419b7769eb2e5c9 (patch) | |
| tree | b67b43888c8f559aba6365fd2a9965584d626f41 /include | |
| parent | fs: dcache: Avoid livelock between d_alloc_parallel and __d_add (diff) | |
| download | linux-dev-8cc07c808c9d595e81cbe5aad419b7769eb2e5c9.tar.xz linux-dev-8cc07c808c9d595e81cbe5aad419b7769eb2e5c9.zip | |
fs: dcache: Use READ_ONCE when accessing i_dir_seq
i_dir_seq is subject to concurrent modification by a cmpxchg or
store-release operation, so ensure that the relaxed access in
d_alloc_parallel uses READ_ONCE.
Reported-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions