linux.git/fs/ceph, branch v5.1-rc2

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: remove dentry_lru file from debugfs

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

The file shows all dentries in cephfs mount. It's not very useful.

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

ceph: touch existing cap when handling reply

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

Move cap to tail of session->s_caps list. So ceph_trim_caps() will
trim older caps first.

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

ceph: pass inclusive lend parameter to filemap_write_and_wait_range()

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

The 'lend' parameter of filemap_write_and_wait_range is required to be
inclusive, so follow the rule. Same for invalidate_inode_pages2_range.

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

ceph: send cap releases more aggressively

2019-03-05T17:55:16+00:00

When pending cap releases fill up one message, start a work to send
cap release message. (old way is sending cap releases every 5 seconds)

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

ceph: support getting ceph.dir.pin vxattr

2019-03-05T17:55:16+00:00

Link: http://tracker.ceph.com/issues/37576
Signed-off-by: "Yan, Zheng" 
Signed-off-by: Ilya Dryomov

ceph: support versioned reply

2019-03-05T17:55:16+00:00

In versioned reply, inodestat, dirstat and lease are encoded with
version, compat_version and struct_len.

Based on a patch from Jos Collin .

Link: http://tracker.ceph.com/issues/26936
Signed-off-by: "Yan, Zheng" 
Signed-off-by: Ilya Dryomov

ceph: map snapid to anonymous bdev ID

2019-03-05T17:55:16+00:00

ceph_getattr() return zero dev ID for head inodes and set dev ID to
snapid directly for snaphost inodes. This is not good because userspace
utilities may consider device ID of 0 as invalid, snapid may conflict
with other device's ID.

This patch introduces "snapids to anonymous bdev IDs" map. we create a
new mapping when we see a snapid for the first time. we trim unused
mapping after it is ilde for 5 minutes.

Link: http://tracker.ceph.com/issues/22353
Signed-off-by: "Yan, Zheng" 
Acked-by: Jeff Layton 
Signed-off-by: Ilya Dryomov