linux.git/fs/ceph/addr.c, branch v5.15

Merge tag 'ceph-for-5.15-rc1' of git://github.com/ceph/ceph-client

2021-09-08T22:50:32+00:00

Pull ceph updates from Ilya Dryomov:

 - a set of patches to address fsync stalls caused by depending on
   periodic rather than triggered MDS journal flushes in some cases
   (Xiubo Li)

 - a fix for mtime effectively not getting updated in case of competing
   writers (Jeff Layton)

 - a couple of fixes for inode reference leaks and various WARNs after
   "umount -f" (Xiubo Li)

 - a new ceph.auth_mds extended attribute (Jeff Layton)

 - a smattering of fixups and cleanups from Jeff, Xiubo and Colin.

* tag 'ceph-for-5.15-rc1' of git://github.com/ceph/ceph-client:
  ceph: fix dereference of null pointer cf
  ceph: drop the mdsc_get_session/put_session dout messages
  ceph: lockdep annotations for try_nonblocking_invalidate
  ceph: don't WARN if we're forcibly removing the session caps
  ceph: don't WARN if we're force umounting
  ceph: remove the capsnaps when removing caps
  ceph: request Fw caps before updating the mtime in ceph_write_iter
  ceph: reconnect to the export targets on new mdsmaps
  ceph: print more information when we can't find snaprealm
  ceph: add ceph_change_snap_realm() helper
  ceph: remove redundant initializations from mdsc and session
  ceph: cancel delayed work instead of flushing on mdsc teardown
  ceph: add a new vxattr to return auth mds for an inode
  ceph: remove some defunct forward declarations
  ceph: flush the mdlog before waiting on unsafe reqs
  ceph: flush mdlog before umounting
  ceph: make iterate_sessions a global symbol
  ceph: make ceph_create_session_msg a global symbol
  ceph: fix comment about short copies in ceph_write_end
  ceph: fix memory leak on decode error in ceph_handle_caps

ceph: fix comment about short copies in ceph_write_end

2021-09-02T20:49:16+00:00

Signed-off-by: Jeff Layton 
Reviewed-by: Ilya Dryomov 
Signed-off-by: Ilya Dryomov

ceph: Fix race between hole punch and page fault

2021-07-13T12:29:01+00:00

Ceph has a following race between hole punching and page fault:

CPU1                                  CPU2
ceph_fallocate()
  ...
  ceph_zero_pagecache_range()
                                      ceph_filemap_fault()
                                        faults in page in the range being
                                        punched
  ceph_zero_objects()

And now we have a page in punched range with invalid data. Fix the
problem by using mapping->invalidate_lock similarly to other
filesystems. Note that using invalidate_lock also fixes a similar race
wrt ->readpage().

CC: Jeff Layton 
CC: ceph-devel@vger.kernel.org
Reviewed-by: Jeff Layton 
Signed-off-by: Jan Kara

ceph: add IO size metrics support

2021-06-28T22:15:51+00:00

This will collect IO's total size and then calculate the average
size, and also will collect the min/max IO sizes.

The debugfs will show the size metrics in bytes and will let the
userspace applications to switch to what they need.

URL: https://tracker.ceph.com/issues/49913
Signed-off-by: Xiubo Li 
Reviewed-by: Jeff Layton 
Signed-off-by: Ilya Dryomov

ceph: make ceph_netfs_read_ops static

2021-06-28T21:49:24+00:00

The sparse tool complains as follows:

fs/ceph/addr.c:316:37: warning:
 symbol 'ceph_netfs_read_ops' was not declared. Should it be static?

This symbol is not used outside of addr.c, so mark it static.

Reported-by: Hulk Robot 
Signed-off-by: Wei Yongjun 
Reviewed-by: Ilya Dryomov 
Signed-off-by: Ilya Dryomov

ceph: remove bogus checks and WARN_ONs from ceph_set_page_dirty

2021-06-28T21:49:24+00:00

The checks for page->mapping are odd, as set_page_dirty is an
address_space operation, and I don't see where it would be called on a
non-pagecache page.

The warning about the page lock also seems bogus.  The comment over
set_page_dirty() says that it can be called without the page lock in
some rare cases. I don't think we want to warn if that's the case.

Reported-by: Matthew Wilcox 
Signed-off-by: Jeff Layton 
Signed-off-by: Ilya Dryomov

ceph: convert some PAGE_SIZE invocations to thp_size()

2021-04-27T21:52:23+00:00

Start preparing to allow the use of THPs in the pagecache with ceph by
making it use thp_size() in lieu of PAGE_SIZE in the appropriate places.

Signed-off-by: Jeff Layton 
Signed-off-by: Ilya Dryomov

ceph: drop pinned_page parameter from ceph_get_caps

2021-04-27T21:52:23+00:00

All of the existing callers that don't set this to NULL just drop the
page reference at some arbitrary point later in processing. There's no
point in keeping a page reference that we don't use, so just drop the
reference immediately after checking the Uptodate flag.

Signed-off-by: Jeff Layton 
Signed-off-by: Ilya Dryomov

ceph: only check pool permissions for regular files

2021-04-27T21:52:23+00:00

There is no need to do a ceph_pool_perm_check() on anything that isn't a
regular file, as the MDS is what handles talking to the OSD in those
cases. Just return 0 if it's not a regular file.

Reported-by: Luis Henriques 
Signed-off-by: Jeff Layton 
Reviewed-by: Xiubo Li 
Signed-off-by: Ilya Dryomov

ceph: rename the metric helpers

2021-04-27T21:52:23+00:00

Signed-off-by: Xiubo Li 
Reviewed-by: Jeff Layton 
Signed-off-by: Ilya Dryomov