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userns: Use cred->user_ns instead of cred->user->user_ns

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Optimize performance and prepare for the removal of the user_ns reference
from user_struct.  Remove the slow long walk through cred->user->user_ns and
instead go straight to cred->user_ns.

Acked-by: Serge Hallyn <[email protected]>
Signed-off-by: Eric W. Biederman <[email protected]>
This commit is contained in:
Eric W. Biederman 2011-11-16 23:15:31 -08:00
commit c4a4d60379
12 changed files with 24 additions and 24 deletions
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2
fs/ecryptfs/messaging.c
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@ -303,7 +303,7 @@ int ecryptfs_process_response(struct ecryptfs_message *msg, uid_t euid,
mutex_unlock(&ecryptfs_daemon_hash_mux);
goto wake_up;
}
tsk_user_ns = __task_cred(msg_ctx->task)->user->user_ns;
tsk_user_ns = __task_cred(msg_ctx->task)->user_ns;
ctx_euid = task_euid(msg_ctx->task);
rc = ecryptfs_find_daemon_by_euid(&daemon, ctx_euid, tsk_user_ns);
rcu_read_unlock();