linux.git/fs/ceph/dir.c, branch v6.8

Merge tag 'ceph-for-6.8-rc1' of https://github.com/ceph/ceph-client

2024-01-19T17:58:55+00:00

Pull ceph updates from Ilya Dryomov:
 "Assorted CephFS fixes and cleanups with nothing standing out"

* tag 'ceph-for-6.8-rc1' of https://github.com/ceph/ceph-client:
  ceph: get rid of passing callbacks in __dentry_leases_walk()
  ceph: d_obtain_{alias,root}(ERR_PTR(...)) will do the right thing
  ceph: fix invalid pointer access if get_quota_realm return ERR_PTR
  ceph: remove duplicated code in ceph_netfs_issue_read()
  ceph: send oldest_client_tid when renewing caps
  ceph: rename create_session_open_msg() to create_session_full_msg()
  ceph: select FS_ENCRYPTION_ALGS if FS_ENCRYPTION
  ceph: fix deadlock or deadcode of misusing dget()
  ceph: try to allocate a smaller extent map for sparse read
  libceph: remove MAX_EXTENTS check for sparse reads
  ceph: reinitialize mds feature bit even when session in open
  ceph: skip reconnecting if MDS is not ready

ceph: get rid of passing callbacks in __dentry_leases_walk()

2024-01-15T14:54:54+00:00

__dentry_leases_walk() gets a callback and calls it for
a bunch of denties; there are exactly two callers and
we already have a flag telling them apart - lwc->dir_lease.

Seeing that indirect calls are costly these days, let's
get rid of the callback and just call the right function
directly.  Has a side benefit of saner signatures...

[ xiubli: a minor fix in the commit title ]

Signed-off-by: Al Viro 
Reviewed-by: Xiubo Li 
Signed-off-by: Ilya Dryomov

dentry: switch the lists of children to hlist

2023-11-25T07:32:13+00:00

Saves a pointer per struct dentry and actually makes the things less
clumsy.  Cleaned the d_walk() and dcache_readdir() a bit by use
of hlist_for_... iterators.

A couple of new helpers - d_first_child() and d_next_sibling(),
to make the expressions less awful.

Reviewed-by: Christian Brauner 
Signed-off-by: Al Viro

ceph: pass an idmapping to mknod/symlink/mkdir

2023-11-03T22:28:34+00:00

Enable mknod/symlink/mkdir iops to handle idmapped mounts.
This is just a matter of passing down the mount's idmapping.

Signed-off-by: Christian Brauner 
Signed-off-by: Alexander Mikhalitsyn 
Reviewed-by: Xiubo Li 
Signed-off-by: Ilya Dryomov

ceph: print cluster fsid and client global_id in all debug logs

2023-11-03T22:28:33+00:00

Multiple CephFS mounts on a host is increasingly common so
disambiguating messages like this is necessary and will make it easier
to debug issues.

At the same this will improve the debug logs to make them easier to
troubleshooting issues, such as print the ino# instead only printing
the memory addresses of the corresponding inodes and print the dentry
names instead of the corresponding memory addresses for the dentry,etc.

Link: https://tracker.ceph.com/issues/61590
Signed-off-by: Xiubo Li 
Reviewed-by: Patrick Donnelly 
Reviewed-by: Milind Changire 
Signed-off-by: Ilya Dryomov

ceph: rename _to_client() to _to_fs_client()

2023-11-03T22:28:33+00:00

We need to covert the inode to ceph_client in the following commit,
and will add one new helper for that, here we rename the old helper
to _fs_client().

Link: https://tracker.ceph.com/issues/61590
Signed-off-by: Xiubo Li 
Reviewed-by: Patrick Donnelly 
Reviewed-by: Milind Changire 
Signed-off-by: Ilya Dryomov

ceph: pass the mdsc to several helpers

2023-11-03T22:28:33+00:00

We will use the 'mdsc' to get the global_id in the following commits.

Link: https://tracker.ceph.com/issues/61590
Signed-off-by: Xiubo Li 
Reviewed-by: Patrick Donnelly 
Reviewed-by: Milind Changire 
Signed-off-by: Ilya Dryomov

ceph: switch ceph_lookup/atomic_open() to use new fscrypt helper

2023-08-24T09:24:37+00:00

Instead of setting the no-key dentry, use the new
fscrypt_prepare_lookup_partial() helper.  We still need to mark the
directory as incomplete if the directory was just unlocked.

In ceph_atomic_open() this fixes a bug where a dentry is incorrectly
set with DCACHE_NOKEY_NAME when 'dir' has been evicted but the key is
still available (for example, where there's a drop_caches).

Signed-off-by: Luís Henriques 
Reviewed-by: Xiubo Li 
Reviewed-by: Milind Changire 
Signed-off-by: Ilya Dryomov

ceph: prevent snapshot creation in encrypted locked directories

2023-08-24T09:24:36+00:00

With snapshot names encryption we can not allow snapshots to be created in
locked directories because the names wouldn't be encrypted.  This patch
forces the directory to be unlocked to allow a snapshot to be created.

Signed-off-by: Luís Henriques 
Reviewed-by: Jeff Layton 
Reviewed-by: Xiubo Li 
Reviewed-by: Milind Changire 
Signed-off-by: Ilya Dryomov

ceph: size handling in MClientRequest, cap updates and inode traces

2023-08-24T09:24:35+00:00

For encrypted inodes, transmit a rounded-up size to the MDS as the
normal file size and send the real inode size in fscrypt_file field.
Also, fix up creates and truncates to also transmit fscrypt_file.

When we get an inode trace from the MDS, grab the fscrypt_file field if
the inode is encrypted, and use it to populate the i_size field instead
of the regular inode size field.

Signed-off-by: Jeff Layton 
Reviewed-by: Xiubo Li 
Reviewed-and-tested-by: Luís Henriques 
Reviewed-by: Milind Changire 
Signed-off-by: Ilya Dryomov