linux-stable.git/fs/ceph, branch v4.3

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client

2015-09-11T19:33:03+00:00

Pull Ceph update from Sage Weil:
 "There are a few fixes for snapshot behavior with CephFS and support
  for the new keepalive protocol from Zheng, a libceph fix that affects
  both RBD and CephFS, a few bug fixes and cleanups for RBD from Ilya,
  and several small fixes and cleanups from Jianpeng and others"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
  ceph: improve readahead for file holes
  ceph: get inode size for each append write
  libceph: check data_len in ->alloc_msg()
  libceph: use keepalive2 to verify the mon session is alive
  rbd: plug rbd_dev->header.object_prefix memory leak
  rbd: fix double free on rbd_dev->header_name
  libceph: set 'exists' flag for newly up osd
  ceph: cleanup use of ceph_msg_get
  ceph: no need to get parent inode in ceph_open
  ceph: remove the useless judgement
  ceph: remove redundant test of head->safe and silence static analysis warnings
  ceph: fix queuing inode to mdsdir's snaprealm
  libceph: rename con_work() to ceph_con_workfn()
  libceph: Avoid holding the zero page on ceph_msgr_slab_init errors
  libceph: remove the unused macro AES_KEY_SIZE
  ceph: invalidate dirty pages after forced umount
  ceph: EIO all operations after forced umount

mm: mark most vm_operations_struct const

2015-09-10T20:29:01+00:00

With two exceptions (drm/qxl and drm/radeon) all vm_operations_struct
structs should be constant.

Signed-off-by: Kirill A. Shutemov 
Reviewed-by: Oleg Nesterov 
Cc: "H. Peter Anvin" 
Cc: Andy Lutomirski 
Cc: Dave Hansen 
Cc: Ingo Molnar 
Cc: Minchan Kim 
Cc: Thomas Gleixner 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

ceph: improve readahead for file holes

2015-09-09T06:52:29+00:00

When readahead encounters file holes, osd reply returns error -ENOENT,
finish_read() skips adding pages to the the page cache. So readahead
does not work for file holes. The fix is adding zero pages to the
page cache when -ENOENT is returned.

Signed-off-by: Yan, Zheng

ceph: get inode size for each append write

2015-09-09T06:52:29+00:00

Signed-off-by: Yan, Zheng

ceph: cleanup use of ceph_msg_get

2015-09-08T20:14:29+00:00

Signed-off-by: Jianpeng Ma 
Signed-off-by: Yan, Zheng

ceph: no need to get parent inode in ceph_open

2015-09-08T20:14:29+00:00

parent inode is needed in creating new inode case.  For ceph_open,
the target inode already exists.

Signed-off-by: Jianpeng Ma 
Signed-off-by: Yan, Zheng

ceph: remove the useless judgement

2015-09-08T20:14:29+00:00

err != 0 is already handled. So skip this.

Signed-off-by: Jianpeng Ma 
Signed-off-by: Yan, Zheng

ceph: remove redundant test of head->safe and silence static analysis warnings

2015-09-08T20:14:29+00:00

Signed-off-by: Brad Hubbard 
Signed-off-by: Yan, Zheng

ceph: fix queuing inode to mdsdir's snaprealm

2015-09-08T20:14:29+00:00

During MDS failovers, MClientSnap message may cause kclient to move
some inodes from root directory's snaprealm to mdsdir's snaprealm
and queue snapshots for these inodes. For a FS has never created any
snapshot, both root directory's snaprealm and mdsdir's snaprealm
share the same snapshot contexts (both are ceph_empty_snapc). This
confuses ceph_put_wrbuffer_cap_refs(), make it unable to distinguish
snapshot buffers from head buffers.

The fix is do not use ceph_empty_snapc as snaprealm's cached context.

Signed-off-by: Yan, Zheng

ceph: invalidate dirty pages after forced umount

2015-09-08T20:14:28+00:00

After forced umount, ceph_writepages_start() skips flushing dirty
pages. To make sure inode's reference count get dropped to zero,
we need to invalidate dirty pages.

Signed-off-by: Yan, Zheng