user/sven/linux.git/include/linux/ceph, branch v4.12.4

libceph: use kbasename() and kill ceph_file_part()

2017-05-23T18:32:10Z

Signed-off-by: Ilya Dryomov Reviewed-by: Alex Elder

ceph: fix file open flags on ppc64

2017-05-04T07:19:24Z

The file open flags (O_foo) are platform specific and should never go out to an interface that is not local to the system. Unfortunately these flags have leaked out onto the wire in the cephfs implementation. That lead to bogus flags getting transmitted on ppc64. This patch converts the kernel view of flags to the ceph view of file open flags. Fixes: 124e68e74 ("ceph: file operations") Signed-off-by: Alexander Graf Reviewed-by: "Yan, Zheng" Signed-off-by: Ilya Dryomov

rbd: support updating the lock cookie without releasing the lock

2017-05-04T07:19:23Z

As we no longer release the lock before potentially raising BLACKLISTED in rbd_reregister_watch(), the "either locked or blacklisted" assert in rbd_queue_workfn() needs to go: we can be both locked and blacklisted at that point now. Signed-off-by: Ilya Dryomov Reviewed-by: Jason Dillaman

libceph: add an epoch_barrier field to struct ceph_osd_client

2017-05-04T07:19:21Z

Cephfs can get cap update requests that contain a new epoch barrier in them. When that happens we want to pause all OSD traffic until the right map epoch arrives. Add an epoch_barrier field to ceph_osd_client that is protected by the osdc->lock rwsem. When the barrier is set, and the current OSD map epoch is below that, pause the request target when submitting the request or when revisiting it. Add a way for upper layers (cephfs) to update the epoch_barrier as well. If we get a new map, compare the new epoch against the barrier before kicking requests and request another map if the map epoch is still lower than the one we want. If we get a map with a full pool, or at quota condition, then set the barrier to the current epoch value. Signed-off-by: Jeff Layton Reviewed-by: Ilya Dryomov Signed-off-by: Ilya Dryomov

libceph: allow requests to return immediately on full conditions if caller wishes

2017-05-04T07:19:21Z

Usually, when the osd map is flagged as full or the pool is at quota, write requests just hang. This is not what we want for cephfs, where it would be better to simply report -ENOSPC back to userland instead of stalling. If the caller knows that it will want an immediate error return instead of blocking on a full or at-quota error condition then allow it to set a flag to request that behavior. Set that flag in ceph_osdc_new_request (since ceph.ko is the only caller), and on any other write request from ceph.ko. A later patch will deal with requests that were submitted before the new map showing the full condition came in. Signed-off-by: Jeff Layton Reviewed-by: Ilya Dryomov Signed-off-by: Ilya Dryomov

libceph: remove req->r_replay_version

2017-05-04T07:19:20Z

Nothing uses this anymore with the removal of the ack vs. commit code. Remove the field and just encode zeroes into place in the request encoding. Signed-off-by: Jeff Layton Reviewed-by: Ilya Dryomov Signed-off-by: Ilya Dryomov

ceph: make seeky readdir more efficient

2017-05-04T07:19:20Z

Current cephfs client uses string to indicate start position of readdir. The string is last entry of previous readdir reply. This approach does not work for seeky readdir because we can not easily convert the new postion to a string. For seeky readdir, mds needs to return dentries from the beginning. Client keeps retrying if the reply does not contain the dentry it wants. In current version of ceph, mds sorts CDentry in its cache in hash order. Client also uses dentry hash to compose dir postion. For seeky readdir, if client passes the hash part of dir postion to mds. mds can avoid replying useless dentries. Signed-off-by: "Yan, Zheng" Signed-off-by: Ilya Dryomov

ceph: allow connecting to mds whose rank >= mdsmap::m_max_mds

2017-05-04T07:19:20Z

mdsmap::m_max_mds is the expected count of active mds. It's not the max rank of active mds. User can decrease mdsmap::m_max_mds, but does not stop mds whose rank >= mdsmap::m_max_mds. Signed-off-by: "Yan, Zheng" Signed-off-by: Ilya Dryomov

libceph: convert ceph_pagelist.refcnt from atomic_t to refcount_t

2017-05-04T07:19:19Z

refcount_t type and corresponding API should be used instead of atomic_t when the variable is used as a reference counter. This allows to avoid accidental refcounter overflows that might lead to use-after-free situations. Signed-off-by: Elena Reshetova Signed-off-by: Hans Liljestrand Signed-off-by: Kees Cook Signed-off-by: David Windsor Signed-off-by: Ilya Dryomov

libceph: convert ceph_osd.o_ref from atomic_t to refcount_t

2017-05-04T07:19:19Z