pm24.git/fs/ceph/debugfs.c, branch v5.6

ceph: add possible_max_rank and make the code more readable

2020-01-27T15:53:40Z

The m_num_mds here is actually the number for MDSs which are in up:active status, and it will be duplicated to m_num_active_mds, so remove it. Add possible_max_rank to the mdsmap struct and this will be the correctly possible largest rank boundary. Remove the special case for one mds in __mdsmap_get_random_mds(), because the validate mds rank may not always be 0. Signed-off-by: Xiubo Li Reviewed-by: Jeff Layton Signed-off-by: Ilya Dryomov

ceph: show tasks waiting on caps in debugfs caps file

2019-12-09T19:55:10Z

Add some visibility of tasks that are waiting for caps to the "caps" debugfs file. Display the tgid of the waiting task, inode number, and the caps the task needs and wants. Signed-off-by: Jeff Layton Reviewed-by: "Yan, Zheng" Signed-off-by: Ilya Dryomov

ceph: don't return a value from void function

2019-09-16T10:06:25Z

This fixes a build warning to that effect. Fixes: 1a829ff2a6c3 ("ceph: no need to check return value of debugfs_create functions") Signed-off-by: John Hubbard Signed-off-by: Ilya Dryomov

Merge tag 'ceph-for-5.3-rc1' of git://github.com/ceph/ceph-client

2019-07-18T18:05:25Z

Pull ceph updates from Ilya Dryomov: "Lots of exciting things this time! - support for rbd object-map and fast-diff features (myself). This will speed up reads, discards and things like snap diffs on sparse images. - ceph.snap.btime vxattr to expose snapshot creation time (David Disseldorp). This will be used to integrate with "Restore Previous Versions" feature added in Windows 7 for folks who reexport ceph through SMB. - security xattrs for ceph (Zheng Yan). Only selinux is supported for now due to the limitations of ->dentry_init_security(). - support for MSG_ADDR2, FS_BTIME and FS_CHANGE_ATTR features (Jeff Layton). This is actually a single feature bit which was missing because of the filesystem pieces. With this in, the kernel client will finally be reported as "luminous" by "ceph features" -- it is still being reported as "jewel" even though all required Luminous features were implemented in 4.13. - stop NULL-terminating ceph vxattrs (Jeff Layton). The convention with xattrs is to not terminate and this was causing inconsistencies with ceph-fuse. - change filesystem time granularity from 1 us to 1 ns, again fixing an inconsistency with ceph-fuse (Luis Henriques). On top of this there are some additional dentry name handling and cap flushing fixes from Zheng. Finally, Jeff is formally taking over for Zheng as the filesystem maintainer" * tag 'ceph-for-5.3-rc1' of git://github.com/ceph/ceph-client: (71 commits) ceph: fix end offset in truncate_inode_pages_range call ceph: use generic_delete_inode() for ->drop_inode ceph: use ceph_evict_inode to cleanup inode's resource ceph: initialize superblock s_time_gran to 1 MAINTAINERS: take over for Zheng as CephFS kernel client maintainer rbd: setallochint only if object doesn't exist rbd: support for object-map and fast-diff rbd: call rbd_dev_mapping_set() from rbd_dev_image_probe() libceph: export osd_req_op_data() macro libceph: change ceph_osdc_call() to take page vector for response libceph: bump CEPH_MSG_MAX_DATA_LEN (again) rbd: new exclusive lock wait/wake code rbd: quiescing lock should wait for image requests rbd: lock should be quiesced on reacquire rbd: introduce copyup state machine rbd: rename rbd_obj_setup_*() to rbd_obj_init_*() rbd: move OSD request allocation into object request state machines rbd: factor out __rbd_osd_setup_discard_ops() rbd: factor out rbd_osd_setup_copyup() rbd: introduce obj_req->osd_reqs list ...

ceph: silence a checker warning in mdsc_show()

2019-07-08T12:01:40Z

The problem is that if ceph_mdsc_build_path() fails then we set "path" to NULL and the "pathlen" variable is uninitialized. Then we call ceph_mdsc_free_path(path, pathlen) to clean up. Since "path" is NULL, the function is a no-op but Smatch and UBSan still complain that "pathlen" is uninitialized. This patch doesn't change run time, it just silence the warnings. Signed-off-by: Dan Carpenter Reviewed-by: Ilya Dryomov Signed-off-by: Ilya Dryomov

ceph: no need to check return value of debugfs_create functions

2019-07-03T14:57:18Z

When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. This cleanup allows the return value of the functions to be made void, as no logic should care if these files succeed or not. Cc: "Yan, Zheng" Cc: Sage Weil Cc: Ilya Dryomov Cc: "David S. Miller" Cc: ceph-devel@vger.kernel.org Signed-off-by: Greg Kroah-Hartman Link: https://lore.kernel.org/r/20190612145538.GA18772@kroah.com Signed-off-by: Greg Kroah-Hartman

libceph: make ceph_pr_addr take an struct ceph_entity_addr pointer

2019-05-07T17:43:05Z

GCC9 is throwing a lot of warnings about unaligned accesses by callers of ceph_pr_addr. All of the current callers are passing a pointer to the sockaddr inside struct ceph_entity_addr. Fix it to take a pointer to a struct ceph_entity_addr instead, and then have the function make a copy of the sockaddr before printing it. Signed-off-by: Jeff Layton Reviewed-by: Ilya Dryomov Signed-off-by: Ilya Dryomov

ceph: use getname/putname in ceph_mdsc_build_path

2019-05-07T17:22:37Z

Al suggested we get rid of the kmalloc here and just use __getname and __putname to get a full PATH_MAX pathname buffer. Since we build the path in reverse, we continue to return a pointer to the beginning of the string and the length, and add a new helper to free the thing at the end. Suggested-by: Al Viro Signed-off-by: Jeff Layton Reviewed-by: "Yan, Zheng" Signed-off-by: Ilya Dryomov

ceph: dump granular cap info in "caps" debugfs file