sunrpc: add a get_rpccred_rcu inline

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Sometimes we might have a RCU managed credential pointer and don't want
to use locking to handle it. Add a function that will take a reference
to the cred iff the refcount is not already zero. Callers can dereference
the pointer under the rcu_read_lock and use that function to take a
reference only if the cred is not on its way to destruction.

Signed-off-by: Jeff Layton <jeff.layton@primarydata.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>

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Jeff Layton 2016-04-21 20:51:56 -04:00 • committed by Anna Schumaker

parent c065d229e3

commit 62dbef2ae4

1 changed files with 18 additions and 0 deletions

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include/linux/sunrpc/auth.h

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