linux-toradex.git/fs/ceph/super.h, branch v4.20-rc6

ceph: new mount option to disable usage of copy-from op

2018-10-22T08:28:24+00:00

Add a new mount option 'nocopyfrom' that will prevent the usage of the
RADOS 'copy-from' operation in cephfs.  This could be useful, for example,
for an administrator to temporarily mitigate any possible bugs in the
'copy-from' implementation.

Currently, only copy_file_range uses this RADOS operation.  Setting this
mount option will result in this syscall reverting to the default VFS
implementation, i.e. to perform the copies locally instead of doing remote
object copies.

Signed-off-by: Luis Henriques 
Reviewed-by: "Yan, Zheng" 
Signed-off-by: Ilya Dryomov

ceph: add non-blocking parameter to ceph_try_get_caps()

2018-10-22T08:28:23+00:00

ceph_try_get_caps currently calls try_get_cap_refs with the nonblock
parameter always set to 'true'.  This change adds a new parameter that
allows to set it's value.  This will be useful for a follow-up patch that
will need to get two sets of capabilities for two different inodes without
risking a deadlock.

Signed-off-by: Luis Henriques 
Reviewed-by: "Yan, Zheng" 
Signed-off-by: Ilya Dryomov

Merge tag 'ceph-for-4.19-rc1' of git://github.com/ceph/ceph-client

2018-08-21T01:26:55+00:00

Pull ceph updates from Ilya Dryomov:
 "The main things are support for cephx v2 authentication protocol and
  basic support for rbd images within namespaces (myself).

  Also included are y2038 conversion patches from Arnd, a pile of
  miscellaneous fixes from Chengguang and Zheng's feature bit
  infrastructure for the filesystem"

* tag 'ceph-for-4.19-rc1' of git://github.com/ceph/ceph-client: (40 commits)
  ceph: don't drop message if it contains more data than expected
  ceph: support cephfs' own feature bits
  crush: fix using plain integer as NULL warning
  libceph: remove unnecessary non NULL check for request_key
  ceph: refactor error handling code in ceph_reserve_caps()
  ceph: refactor ceph_unreserve_caps()
  ceph: change to void return type for __do_request()
  ceph: compare fsc->max_file_size and inode->i_size for max file size limit
  ceph: add additional size check in ceph_setattr()
  ceph: add additional offset check in ceph_write_iter()
  ceph: add additional range check in ceph_fallocate()
  ceph: add new field max_file_size in ceph_fs_client
  libceph: weaken sizeof check in ceph_x_verify_authorizer_reply()
  libceph: check authorizer reply/challenge length before reading
  libceph: implement CEPHX_V2 calculation mode
  libceph: add authorizer challenge
  libceph: factor out encrypt_authorizer()
  libceph: factor out __ceph_x_decrypt()
  libceph: factor out __prepare_write_connect()
  libceph: store ceph_auth_handshake pointer in ceph_connection
  ...

ceph: refactor ceph_unreserve_caps()

2018-08-13T15:55:43+00:00

The code of ceph_unreserve_caps() and error handling in
ceph_reserve_caps() are duplicated, so introduce a helper
__ceph_unreserve_caps() to reduce duplicated code.

Signed-off-by: Chengguang Xu 
Reviewed-by: "Yan, Zheng" 
Signed-off-by: Ilya Dryomov

ceph: add new field max_file_size in ceph_fs_client

2018-08-02T19:33:27+00:00

In order to not bother to VFS and other specific filesystems,
we decided to do offset validation inside ceph kernel client,
so just simply set sb->s_maxbytes to MAX_LFS_FILESIZE so that
it can successfully pass VFS check. We add new field max_file_size
in ceph_fs_client to store real file size limit and doing proper
check based on it.

Signed-off-by: Chengguang Xu 
Reviewed-by: "Yan, Zheng" 
Signed-off-by: Ilya Dryomov

ceph: use timespec64 for inode timestamp

2018-08-02T19:26:12+00:00

Since the vfs structures are all using timespec64, we can now
change the internal representation, using ceph_encode_timespec64 and
ceph_decode_timespec64.

In case of ceph_aux_inode however, we need to avoid doing a memcmp()
on uninitialized padding data, so the members of the i_mtime field get
copied individually into 64-bit integers.

Signed-off-by: Arnd Bergmann 
Reviewed-by: "Yan, Zheng" 
Signed-off-by: Ilya Dryomov

get rid of 'opened' argument of ->atomic_open() - part 3

2018-07-12T14:04:20+00:00

now it can be done...

Acked-by: Linus Torvalds 
Signed-off-by: Al Viro

ceph: quota: report root dir quota usage in statfs

2018-04-02T09:17:53+00:00

This commit changes statfs default behaviour when reporting usage
statistics.  Instead of using the overall filesystem usage, statfs now
reports the quota for the filesystem root, if ceph.quota.max_bytes has
been set for this inode.  If quota hasn't been set, it falls back to the
old statfs behaviour.

A new mount option is also added ('noquotadf') to disable this behaviour.

Signed-off-by: Luis Henriques 
Reviewed-by: "Yan, Zheng" 
Signed-off-by: Ilya Dryomov

ceph: quota: add counter for snaprealms with quota

2018-04-02T09:17:53+00:00

By keeping a counter with the number of snaprealms that have quota set
allows to optimize the functions that need to walk throught the realms
hierarchy looking for quotas.  Thus, if this counter is zero it's safe to
assume that there are no realms with quota.

Signed-off-by: Luis Henriques 
Reviewed-by: "Yan, Zheng" 
Signed-off-by: Ilya Dryomov

ceph: quota: cache inode pointer in ceph_snap_realm

2018-04-02T09:17:53+00:00

Keep a pointer to the inode in struct ceph_snap_realm.  This allows to
optimize functions that walk the realms hierarchy (e.g. in quotas).

Signed-off-by: Luis Henriques 
Reviewed-by: "Yan, Zheng" 
Signed-off-by: Ilya Dryomov