linux.git/fs/ceph/dir.c, branch v5.1

ceph: ensure d_name stability in ceph_dentry_hash()

2019-04-23T19:37:54+00:00

Take the d_lock here to ensure that d_name doesn't change.

Cc: stable@vger.kernel.org
Signed-off-by: Jeff Layton 
Reviewed-by: "Yan, Zheng" 
Signed-off-by: Ilya Dryomov

ceph: add mount option to limit caps count

2019-03-05T17:55:17+00:00

If number of caps exceed the limit, ceph_trim_dentires() also trim
dentries with valid leases. Trimming dentry releases references to
associated inode, which may evict inode and release caps.

By default, there is no limit for caps count.

Signed-off-by: "Yan, Zheng" 
Reviewed-by: Jeff Layton 
Signed-off-by: Ilya Dryomov

ceph: periodically trim stale dentries

2019-03-05T17:55:17+00:00

Previous commit make VFS delete stale dentry when last reference is
dropped. Lease also can become invalid when corresponding dentry has
no reference. This patch make cephfs periodically scan lease list,
delete corresponding dentry if lease is invalid.

There are two types of lease, dentry lease and dir lease. dentry lease
has life time and applies to singe dentry. Dentry lease is added to tail
of a list when it's updated, leases at front of the list will expire
first. Dir lease is CEPH_CAP_FILE_SHARED on directory inode, it applies
to all dentries in the directory. Dentries have dir leases are added to
another list. Dentries in the list are periodically checked in a round
robin manner.

Signed-off-by: "Yan, Zheng" 
Reviewed-by: Jeff Layton 
Signed-off-by: Ilya Dryomov

ceph: delete stale dentry when last reference is dropped

2019-03-05T17:55:17+00:00

introduce ceph_d_delete(), which checks if dentry has valid lease.

Signed-off-by: "Yan, Zheng" 
Reviewed-by: Jeff Layton 
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

ceph: add d_drop for some error cases in ceph_symlink()

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

When file num exceeds quota limit, should call d_drop to drop
dentry from cache as well.

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

ceph: add d_drop for some error cases in ceph_mknod()

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

When file num exceeds quota limit or fails from ceph_per_init_acls()
should call d_drop to drop dentry from cache as well.

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

ceph: support file lock on directory

2018-06-04T18:45:56+00:00

Link: http://tracker.ceph.com/issues/24028
Signed-off-by: "Yan, Zheng" 
Signed-off-by: Ilya Dryomov

Merge tag 'ceph-for-4.17-rc1' of git://github.com/ceph/ceph-client

2018-04-10T19:25:30+00:00

Pull ceph updates from Ilya Dryomov:
 "The big ticket items are:

   - support for rbd "fancy" striping (myself).

     The striping feature bit is now fully implemented, allowing mapping
     v2 images with non-default striping patterns. This completes
     support for --image-format 2.

   - CephFS quota support (Luis Henriques and Zheng Yan).

     This set is based on the new SnapRealm code in the upcoming v13.y.z
     ("Mimic") release. Quota handling will be rejected on older
     filesystems.

   - memory usage improvements in CephFS (Chengguang Xu).

     Directory specific bits have been split out of ceph_file_info and
     some effort went into improving cap reservation code to avoid OOM
     crashes.

  Also included a bunch of assorted fixes all over the place from
  Chengguang and others"

* tag 'ceph-for-4.17-rc1' of git://github.com/ceph/ceph-client: (67 commits)
  ceph: quota: report root dir quota usage in statfs
  ceph: quota: add counter for snaprealms with quota
  ceph: quota: cache inode pointer in ceph_snap_realm
  ceph: fix root quota realm check
  ceph: don't check quota for snap inode
  ceph: quota: update MDS when max_bytes is approaching
  ceph: quota: support for ceph.quota.max_bytes
  ceph: quota: don't allow cross-quota renames
  ceph: quota: support for ceph.quota.max_files
  ceph: quota: add initial infrastructure to support cephfs quotas
  rbd: remove VLA usage
  rbd: fix spelling mistake: "reregisteration" -> "reregistration"
  ceph: rename function drop_leases() to a more descriptive name
  ceph: fix invalid point dereference for error case in mdsc destroy
  ceph: return proper bool type to caller instead of pointer
  ceph: optimize memory usage
  ceph: optimize mds session register
  libceph, ceph: add __init attribution to init funcitons
  ceph: filter out used flags when printing unused open flags
  ceph: don't wait on writeback when there is no more dirty pages
  ...

Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2018-04-06T18:07:08+00:00

Pull misc vfs updates from Al Viro:
 "Assorted stuff, including Christoph's I_DIRTY patches"

* 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  fs: move I_DIRTY_INODE to fs.h
  ubifs: fix bogus __mark_inode_dirty(I_DIRTY_SYNC | I_DIRTY_DATASYNC) call
  ntfs: fix bogus __mark_inode_dirty(I_DIRTY_SYNC | I_DIRTY_DATASYNC) call
  gfs2: fix bogus __mark_inode_dirty(I_DIRTY_SYNC | I_DIRTY_DATASYNC) calls
  fs: fold open_check_o_direct into do_dentry_open
  vfs: Replace stray non-ASCII homoglyph characters with their ASCII equivalents
  vfs: make sure struct filename->iname is word-aligned
  get rid of pointless includes of fs_struct.h
  [poll] annotate SAA6588_CMD_POLL users