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| author |   Linus Torvalds <torvalds@linux-foundation.org> | 2018-10-31 14:42:31 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-10-31 14:42:31 -0700 |
| commit | 31990f0f5366a8f66688edae8688723b22034108 (patch) | |
| tree | 07078a732a5f02d2330f3cb873286f9ac53ea969 /Documentation/filesystems | |
| parent | Merge tag 'fbdev-v4.20' of https://github.com/bzolnier/linux (diff) | |
| parent | ceph: new mount option to disable usage of copy-from op (diff) | |
| download | linux-dev-31990f0f5366a8f66688edae8688723b22034108.tar.xz linux-dev-31990f0f5366a8f66688edae8688723b22034108.zip | |
Merge tag 'ceph-for-4.20-rc1' of git://github.com/ceph/ceph-client
Pull ceph updates from Ilya Dryomov:
"The highlights are:
- a series that fixes some old memory allocation issues in libceph
(myself). We no longer allocate memory in places where allocation
failures cannot be handled and BUG when the allocation fails.
- support for copy_file_range() syscall (Luis Henriques). If size and
alignment conditions are met, it leverages RADOS copy-from
operation. Otherwise, a local copy is performed.
- a patch that reduces memory requirement of ceph_sync_read() from
the size of the entire read to the size of one object (Zheng Yan).
- fallocate() syscall is now restricted to FALLOC_FL_PUNCH_HOLE (Luis
Henriques)"
* tag 'ceph-for-4.20-rc1' of git://github.com/ceph/ceph-client: (25 commits)
ceph: new mount option to disable usage of copy-from op
ceph: support copy_file_range file operation
libceph: support the RADOS copy-from operation
ceph: add non-blocking parameter to ceph_try_get_caps()
libceph: check reply num_data_items in setup_request_data()
libceph: preallocate message data items
libceph, rbd, ceph: move ceph_osdc_alloc_messages() calls
libceph: introduce alloc_watch_request()
libceph: assign cookies in linger_submit()
libceph: enable fallback to ceph_msg_new() in ceph_msgpool_get()
ceph: num_ops is off by one in ceph_aio_retry_work()
libceph: no need to call osd_req_opcode_valid() in osd_req_encode_op()
ceph: set timeout conditionally in __cap_delay_requeue
libceph: don't consume a ref on pagelist in ceph_msg_data_add_pagelist()
libceph: introduce ceph_pagelist_alloc()
libceph: osd_req_op_cls_init() doesn't need to take opcode
libceph: bump CEPH_MSG_MAX_DATA_LEN
ceph: only allow punch hole mode in fallocate
ceph: refactor ceph_sync_read()
ceph: check if LOOKUPNAME request was aborted when filling trace
...
Diffstat (limited to 'Documentation/filesystems')
| -rw-r--r-- | Documentation/filesystems/ceph.txt | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/filesystems/ceph.txt b/Documentation/filesystems/ceph.txt index 8bf62240e10d..1177052701e1 100644 --- a/Documentation/filesystems/ceph.txt +++ b/Documentation/filesystems/ceph.txt @@ -151,6 +151,11 @@ Mount Options Report overall filesystem usage in statfs instead of using the root directory quota. + nocopyfrom + Don't use the RADOS 'copy-from' operation to perform remote object + copies. Currently, it's only used in copy_file_range, which will revert + to the default VFS implementation if this option is used. + More Information ================ |