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| author | Filipe Manana <fdmanana@gmail.com> | 2014-03-14 20:55:01 +0000 |
|---|---|---|
| committer | Chris Mason <clm@fb.com> | 2014-03-20 17:15:28 -0700 |
| commit | 21543baddcdbaa49db5ac8766ae564381e7c64d9 (patch) | |
| tree | 4ce8aee02deb8ed2d37ef08fe7b2bf2ef66eec24 /tools/perf/scripts/python/syscall-counts.py | |
| parent | c3a468915a384c0015263edd9b7263775599a323 (diff) | |
Btrfs: fix race when updating existing ref head
While we update an existing ref head's extent_op, we're not holding
its spinlock, so while we're updating its extent_op contents (key,
flags) we can have a task running __btrfs_run_delayed_refs() that
holds the ref head's lock and sets its extent_op to NULL right after
the task updating the ref head just checked its extent_op was not NULL.
Signed-off-by: Filipe David Borba Manana <fdmanana@gmail.com>
Signed-off-by: Chris Mason <clm@fb.com>
Diffstat (limited to 'tools/perf/scripts/python/syscall-counts.py')
0 files changed, 0 insertions, 0 deletions