linux-toradex.git/fs/ceph/ioctl.c, branch v4.10

ceph: reduce i_nr_by_mode array size

2016-07-28T00:55:39+00:00

Track usage count for individual fmode bit. This can reduce the
array size by half.

Signed-off-by: Yan, Zheng

ceph: rados pool namespace support

2016-07-28T00:55:38+00:00

This patch adds codes that decode pool namespace information in
cap message and request reply. Pool namespace is saved in i_layout,
it will be passed to libceph when doing read/write.

Signed-off-by: Yan, Zheng

libceph: define new ceph_file_layout structure

2016-07-28T00:55:36+00:00

Define new ceph_file_layout structure and rename old ceph_file_layout
to ceph_file_layout_legacy. This is preparation for adding namespace
to ceph_file_layout structure.

Signed-off-by: Yan, Zheng

libceph: add an ONSTACK initializer for oids

2016-07-28T00:55:35+00:00

An on-stack oid in ceph_ioctl_get_dataloc() is not initialized,
resulting in a WARN and a NULL pointer dereference later on.  We will
have more of these on-stack in the future, so fix it with a convenience
macro.

Fixes: d30291b985d1 ("libceph: variable-sized ceph_object_id")
Signed-off-by: Ilya Dryomov

libceph: a major OSD client update

2016-05-25T23:14:03+00:00

This is a major sync up, up to ~Jewel.  The highlights are:

- per-session request trees (vs a global per-client tree)
- per-session locking (vs a global per-client rwlock)
- homeless OSD session
- no ad-hoc global per-client lists
- support for pool quotas
- foundation for watch/notify v2 support
- foundation for map check (pool deletion detection) support

The switchover is incomplete: lingering requests can be setup and
teared down but aren't ever reestablished.  This functionality is
restored with the introduction of the new lingering infrastructure
(ceph_osd_linger_request, linger_work, etc) in a later commit.

Signed-off-by: Ilya Dryomov

libceph: rename ceph_calc_pg_primary()

2016-05-25T22:36:25+00:00

Rename ceph_calc_pg_primary() to ceph_pg_to_acting_primary() to
emphasise that it returns acting primary.

Signed-off-by: Ilya Dryomov

libceph: rename ceph_oloc_oid_to_pg()

2016-05-25T22:36:24+00:00

Rename ceph_oloc_oid_to_pg() to ceph_object_locator_to_pg().  Emphasise
that returned is raw PG and return -ENOENT instead of -EIO if the pool
doesn't exist.

Signed-off-by: Ilya Dryomov

libceph: variable-sized ceph_object_id

2016-05-25T22:36:22+00:00

Currently ceph_object_id can hold object names of up to 100
(CEPH_MAX_OID_NAME_LEN) characters.  This is enough for all use cases,
expect one - long rbd image names:

- a format 1 header is named ".rbd"
- an object that points to a format 2 header is named "rbd_id."

We operate on these potentially long-named objects during rbd map, and,
for format 1 images, during header refresh.  (A format 2 header name is
a small system-generated string.)

Lift this 100 character limit by making ceph_object_id be able to point
to an externally-allocated string.  Apart from being able to work with
almost arbitrarily-long named objects, this allows us to reduce the
size of ceph_object_id from >100 bytes to 64 bytes.

Signed-off-by: Ilya Dryomov

ceph: fix divide-by-zero in __validate_layout()

2014-10-14T19:57:05+00:00

The 'stripe_unit' field is 64 bits, casting it to 32 bits can result zero.

Signed-off-by: Yan, Zheng

ceph: request xattrs if xattr_version is zero

2014-10-14T17:03:38+00:00

Following sequence of events can happen.
  - Client releases an inode, queues cap release message.
  - A 'lookup' reply brings the same inode back, but the reply
    doesn't contain xattrs because MDS didn't receive the cap release
    message and thought client already has up-to-data xattrs.

The fix is force sending a getattr request to MDS if xattrs_version
is 0. The getattr mask is set to CEPH_STAT_CAP_XATTR, so MDS knows client
does not have xattr.

Signed-off-by: Yan, Zheng