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authorNeilBrown <neilb@suse.de>2014-07-14 11:28:20 +1000
committerTrond Myklebust <trond.myklebust@primarydata.com>2014-08-03 17:14:12 -0400
commitbd95608053b7f7813351b0defc0e3e7ef8cf2803 (patch)
treefde08b1ecc2c4aedd30a68244ca502ce5f81f0fe /fs/nfs/dir.c
parentd51ac1a8e9b86b2d17d349bb256869cab6522787 (diff)
downloadop-kernel-dev-bd95608053b7f7813351b0defc0e3e7ef8cf2803.zip
op-kernel-dev-bd95608053b7f7813351b0defc0e3e7ef8cf2803.tar.gz
sunrpc/auth: allow lockless (rcu) lookup of credential cache.
The new flag RPCAUTH_LOOKUP_RCU to credential lookup avoids locking, does not take a reference on the returned credential, and returns -ECHILD if a simple lookup was not possible. The returned value can only be used within an rcu_read_lock protected region. The main user of this is the new rpc_lookup_cred_nonblock() which returns a pointer to the current credential which is only rcu-safe (no ref-count held), and might return -ECHILD if allocation was required. Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs/nfs/dir.c')
0 files changed, 0 insertions, 0 deletions
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