staging: erofs: locked before registering for all new workgroups
Let's make sure that the one registering a workgroup will also
take the primary work lock at first for two reasons:
1) There's no need to introduce such a race window (and consequently
overhead) between registering and locking, other tasks could break
in by chance, and the race seems unnecessary (no benefit at all);
2) It's better to take the primary work when a workgroup
is registered to apply the cache managed policy, for example,
if some other tasks break in, it could turn into the in-place
decompression rather than use as the cached decompression.
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1 file changed