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author | Eric W. Biederman <ebiederm@xmission.com> | 2015-04-03 03:33:53 +0200 |
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committer | Eric W. Biederman <ebiederm@xmission.com> | 2015-04-03 03:33:53 +0200 |
commit | a3b3c5627c8301ac850962b04f645dfab81e6a60 (patch) | |
tree | afbb66cbfc7cdf454c729cf00b1e5e57acca9b93 | |
parent | Linux 4.0-rc6 (diff) | |
download | linux-a3b3c5627c8301ac850962b04f645dfab81e6a60.tar.xz linux-a3b3c5627c8301ac850962b04f645dfab81e6a60.zip |
mnt: Use hlist_move_list in namespace_unlock
Small cleanup to make the code more readable and maintainable.
Signed-off-by: Eric Biederman <ebiederm@xmission.com>
-rw-r--r-- | fs/namespace.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/fs/namespace.c b/fs/namespace.c index 82ef1405260e..e1ee57206eef 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -1298,17 +1298,15 @@ static HLIST_HEAD(unmounted); /* protected by namespace_sem */ static void namespace_unlock(void) { - struct hlist_head head = unmounted; + struct hlist_head head; - if (likely(hlist_empty(&head))) { - up_write(&namespace_sem); - return; - } + hlist_move_list(&unmounted, &head); - head.first->pprev = &head.first; - INIT_HLIST_HEAD(&unmounted); up_write(&namespace_sem); + if (likely(hlist_empty(&head))) + return; + synchronize_rcu(); group_pin_kill(&head); |