user/sven/linux.git/include/linux/ceph, branch v3.4.92

libceph: wrap auth methods in a mutex

2013-06-20T18:58:47Z

commit e9966076cdd952e19f2dd4854cd719be0d7cbebc upstream. The auth code is called from a variety of contexts, include the mon_client (protected by the monc's mutex) and the messenger callbacks (currently protected by nothing). Avoid chaos by protecting all auth state with a mutex. Nothing is blocking, so this should be simple and lightweight. Signed-off-by: Sage Weil Reviewed-by: Alex Elder Signed-off-by: Greg Kroah-Hartman

libceph: wrap auth ops in wrapper functions

2013-06-20T18:58:47Z

commit 27859f9773e4a0b2042435b13400ee2c891a61f4 upstream. Use wrapper functions that check whether the auth op exists so that callers do not need a bunch of conditional checks. Simplifies the external interface. Signed-off-by: Sage Weil Reviewed-by: Alex Elder Signed-off-by: Greg Kroah-Hartman

libceph: add update_authorizer auth method

2013-06-20T18:58:46Z

commit 0bed9b5c523d577378b6f83eab5835fe30c27208 upstream. Currently the messenger calls out to a get_authorizer con op, which will create a new authorizer if it doesn't yet have one. In the meantime, when we rotate our service keys, the authorizer doesn't get updated. Eventually it will be rejected by the server on a new connection attempt and get invalidated, and we will then rebuild a new authorizer, but this is not ideal. Instead, if we do have an authorizer, call a new update_authorizer op that will verify that the current authorizer is using the latest secret. If it is not, we will build a new one that does. This avoids the transient failure. This fixes one of the sorry sequence of events for bug http://tracker.ceph.com/issues/4282 Signed-off-by: Sage Weil Reviewed-by: Alex Elder Signed-off-by: Greg Kroah-Hartman

libceph: remove 'osdtimeout' option

2013-01-17T16:51:20Z

This would reset a connection with any OSD that had an outstanding request that was taking more than N seconds. The idea was that if the OSD was buggy, the client could compensate by resending the request. In reality, this only served to hide server bugs, and we haven't actually seen such a bug in quite a while. Moreover, the userspace client code never did this. More importantly, often the request is taking a long time because the OSD is trying to recover, or overloaded, and killing the connection and retrying would only make the situation worse by giving the OSD more work to do. Signed-off-by: Sage Weil Reviewed-by: Alex Elder (cherry picked from commit 83aff95eb9d60aff5497e9f44a2ae906b86d8e88) Signed-off-by: Greg Kroah-Hartman

libceph: drop declaration of ceph_con_get()

2012-11-26T19:38:45Z

commit 261030215d970c62f799e6e508e3c68fc7ec2aa9 upstream. For some reason the declaration of ceph_con_get() and ceph_con_put() did not get deleted in this commit: d59315ca libceph: drop ceph_con_get/put helpers and nref member Clean that up. Signed-off-by: Alex Elder Cc: Herton Ronaldo Krzesinski Signed-off-by: Greg Kroah-Hartman

libceph: check for invalid mapping

2012-11-26T19:38:44Z

(cherry picked from commit d63b77f4c552cc3a20506871046ab0fcbc332609) If we encounter an invalid (e.g., zeroed) mapping, return an error and avoid a divide by zero. Signed-off-by: Sage Weil Reviewed-by: Alex Elder Signed-off-by: Greg Kroah-Hartman

libceph: clean up con flags

2012-11-26T19:38:41Z

(cherry picked from commit 4a8616920860920abaa51193146fe36b38ef09aa) Rename flags with CON_FLAG prefix, move the definitions into the c file, and (better) document their meaning. Signed-off-by: Sage Weil Signed-off-by: Greg Kroah-Hartman

libceph: replace connection state bits with states

2012-11-26T19:38:41Z

(cherry picked from commit 8dacc7da69a491c515851e68de6036f21b5663ce) Use a simple set of 6 enumerated values for the socket states (CON_STATE_*) and use those instead of the state bits. All of the con->state checks are now under the protection of the con mutex, so this is safe. It also simplifies many of the state checks because we can check for anything other than the expected state instead of various bits for races we can think of. This appears to hold up well to stress testing both with and without socket failure injection on the server side. Signed-off-by: Sage Weil Signed-off-by: Greg Kroah-Hartman

libceph: prevent the race of incoming work during teardown

2012-11-26T19:38:38Z

(cherry picked from commit a2a3258417eb6a1799cf893350771428875a8287) Add an atomic variable 'stopping' as flag in struct ceph_messenger, set this flag to 1 in function ceph_destroy_client(), and add the condition code in function ceph_data_ready() to test the flag value, if true(1), just return. Signed-off-by: Guanjun He Reviewed-by: Sage Weil Signed-off-by: Greg Kroah-Hartman

libceph: initialize msgpool message types

2012-11-26T19:38:38Z

(cherry picked from commit d50b409fb8698571d8209e5adfe122e287e31290) Initialize the type field for messages in a msgpool. The caller was doing this for osd ops, but not for the reply messages. Reported-by: Alex Elder Signed-off-by: Sage Weil Signed-off-by: Greg Kroah-Hartman