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    Subject[GIT PULL] Ceph distributed file system client for 2.6.34-rc1
    Hi Linus,

    Please consider pulling the Ceph distributed file system client from

    git:// for-linus

    which includes a patch with the recent write_inode API change, but does
    not merge Al's write_inode branch, as that currently conflicts with your
    tree in a few places. (OTOH, my branch has a trivial conflict in

    Red Hat has bugs open asking for Ceph, and has included the userspace in
    F13, but they are antsy about pulling in the kernel client before it goes
    upstream. Another half dozen people have piped up on LKML or the ceph
    list asking to see it pushed upstream.

    A larger number of people are evaluating and testing the system. A few
    sites have reasonably sized clusters set up (>16 nodes), the rest have
    tried the system on a small number of nodes. At this point you still
    won't find a particularly large user base, or as much demand as say btrfs
    simply because Ceph is useful for a much smaller audience--those with lots
    of storage boxes they'd like to aggregate into a single file system--and
    because those people tend to be pretty careful with their data.

    Although stability has improved greatly is the last few months, Ceph is
    still relatively new and experimental for a something as conservative as
    storage, and only time and testing will change that. Getting the code
    upstream sooner rather than later will accelerate that process by reducing
    barriers to testing, expanding the pool of systems with a usable client,
    and making it easier for distros to include it.


    Alexander Beregalov (1):
    ceph: move dereference after NULL test

    Julia Lawall (3):
    fs/ceph: introduce missing kfree
    fs/ceph: Move a dereference below a NULL test
    ceph: remove duplicate variable initialization

    Noah Watkins (3):
    ceph: replace list_entry with container_of
    ceph: remove redundant use of le32_to_cpu
    ceph: fix intra strip unit length calculation

    Sage Weil (173):
    ceph: documentation
    ceph: on-wire types
    ceph: client types
    ceph: ref counted buffer
    ceph: super.c
    ceph: inode operations
    ceph: directory operations
    ceph: file operations
    ceph: address space operations
    ceph: MDS client
    ceph: OSD client
    ceph: CRUSH mapping algorithm
    ceph: monitor client
    ceph: capability management
    ceph: snapshot management
    ceph: messenger library
    ceph: message pools
    ceph: nfs re-export support
    ceph: ioctls
    ceph: debugfs
    ceph: Kconfig, Makefile
    ceph: document shared files in README
    ceph: show meaningful version on module load
    ceph: include preferred_osd in file layout virtual xattr
    ceph: gracefully avoid empty crush buckets
    ceph: fix mdsmap decoding when multiple mds's are present
    ceph: renew mon subscription before it expires
    ceph: fix osd request submission race
    ceph: revoke osd request message on request completion
    ceph: fail gracefully on corrupt osdmap (bad pg_temp mapping)
    ceph: reset osd session on fault, not peer_reset
    ceph: cancel osd requests before resending them
    ceph: update to mon client protocol v15
    ceph: add file layout validation
    ceph: ignore trailing data in monamp
    ceph: remove unused CEPH_MSG_{OSD,MDS}_GETMAP
    ceph: add version field to message header
    ceph: convert encode/decode macros to inlines
    ceph: initialize sb->s_bdi, bdi_unregister after kill_anon_super
    ceph: move generic flushing code into helper
    ceph: flush dirty caps via the cap_dirty list
    ceph: correct subscribe_ack msgpool payload size
    ceph: warn on allocation from msgpool with larger front_len
    ceph: move dirty caps code around
    ceph: enable readahead
    ceph: include preferred osd in placement seed
    ceph: v0.17 of client
    ceph: move directory size logic to ceph_getattr
    ceph: remove small mon addr limit; use CEPH_MAX_MON where appropriate
    ceph: reduce parse_mount_args stack usage
    ceph: silence uninitialized variable warning
    ceph: fix, clean up string mount arg parsing
    ceph: allocate and parse mount args before client instance
    ceph: correct comment to match striping calculation
    ceph: fix object striping calculation for non-default striping schemes
    ceph: fix uninitialized err variable
    crush: always return a value from crush_bucket_choose
    ceph: init/destroy bdi in client create/destroy helpers
    ceph: use fixed endian encoding for ceph_entity_addr
    ceph: fix endian conversions for ceph_pg
    ceph: fix sparse endian warning
    ceph: convert port endianness
    ceph: clean up 'osd%d down' console msg
    ceph: make CRUSH hash functions non-inline
    ceph: use strong hash function for mapping objects to pgs
    ceph: make object hash a pg_pool property
    ceph: make CRUSH hash function a bucket property
    ceph: do not confuse stale and dead (unreconnected) caps
    ceph: separate banner and connect during handshake into distinct stages
    ceph: remove recon_gen logic
    ceph: exclude snapdir from readdir results
    ceph: initialize i_size/i_rbytes on snapdir
    ceph: pr_info when mds reconnect completes
    ceph: build cleanly without CONFIG_DEBUG_FS
    ceph: fix page invalidation deadlock
    ceph: remove bad calls to ceph_con_shutdown
    ceph: remove unnecessary ceph_con_shutdown
    ceph: handle errors during osd client init
    ceph: negotiate authentication protocol; implement AUTH_NONE protocol
    ceph: move mempool creation to ceph_create_client
    ceph: small cleanup in hash function
    ceph: fix debugfs entry, simplify fsid checks
    ceph: decode updated mdsmap format
    ceph: reset requested max_size after mds reconnect
    ceph: reset msgr backoff during open, not after successful handshake
    ceph: remove dead code
    ceph: remove useless IS_ERR checks
    ceph: plug leak of request_mutex
    ceph: whitespace cleanup
    ceph: hide /.ceph from readdir results
    ceph: allow preferred osd to be get/set via layout ioctl
    ceph: update MAINTAINERS entry with correct git URL
    ceph: mark v0.18 release
    ceph: use kref for ceph_buffer
    ceph: simplify ceph_buffer interface
    ceph: use kref for struct ceph_mds_request
    ceph: use kref for ceph_osd_request
    ceph: use kref for ceph_msg
    ceph: do not feed bad device ids to crush
    ceph: fix leak of monc mutex
    ceph: carry explicit msg reference for currently sending message
    ceph: plug msg leak in con_fault
    ceph: detect lossy state of connection
    ceph: don't save sent messages on lossy connections
    ceph: hex dump corrupt server data to KERN_DEBUG
    ceph: plug leak of incoming message during connection fault/close
    ceph: make mds ops interruptible
    ceph: include link to bdi in debugfs
    ceph: ensure rename target dentry fails revalidation
    ceph: do not drop lease during revalidate
    ceph: fix error paths for corrupt osdmap messages
    ceph: fix incremental osdmap pg_temp decoding bug
    ceph: do not touch_caps while iterating over caps list
    ceph: only unregister registered bdi
    ceph: unregister canceled/timed out osd requests
    ceph: use connection mutex to protect read and write stages
    ceph: control access to page vector for incoming data
    ceph: more informative msgpool errors
    ceph: include transaction id in ceph_msg_header (protocol change)
    ceph: add feature bits to connection handshake (protocol change)
    ceph: support ceph_pagelist for message payload
    ceph: use ceph_pagelist for mds reconnect message; change encoding (protocol change)
    ceph: remove unused erank field
    ceph: display pgid in debugfs osd request dump
    ceph: mark MDS CREATE as a write op
    ceph: properly handle aborted mds requests
    ceph: precede encoded ceph_pg_pool struct with version
    ceph: include type in ceph_entity_addr, filepath
    ceph: release all pages after successful osd write response
    ceph: buffer decoding helpers
    ceph: aes crypto and base64 encode/decode helpers
    ceph: allow renewal of auth credentials
    ceph: add struct version to auth encoding
    ceph: add support for auth_x authentication protocol
    ceph: add uid field to ceph_pg_pool
    ceph: cap revocation fixes
    ceph: do not retain caps that are being revoked
    ceph: fix sync read eof check deadlock
    ceph: cleanup async writeback, truncation, invalidate helpers
    ceph: invalidate pages even if truncate is pending
    ceph: remove bogus invalidate_mapping_pages
    ceph: fix msgr to keep sent messages until acked
    ceph: reset osd connections after fault
    ceph: allow connection to be reopened by fault callback
    ceph: cancel delayed work when closing connection
    ceph: use rbtree for mds requests
    ceph: use rbtree for snap_realms
    ceph: use rbtree for mon statfs requests
    ceph: fix authentication races, auth_none oops
    ceph: clean up readdir caps reservation
    ceph: fix iterate_caps removal race
    ceph: fix memory leak when destroying osdmap with pg_temp mappings
    ceph: use rbtree for pg pools; decode new osdmap format
    ceph: v0.19 release
    ceph: fix typo in ceph_queue_writeback debug output
    ceph: fix check for invalidate_mapping_pages success
    ceph: fix up unexpected message handling
    ceph: fix comments, locking in destroy_inode
    ceph: drop messages on unregistered mds sessions; cleanup
    ceph: fix client_request_forward decoding
    ceph: invalidate_authorizer without con->mutex held
    ceph: fix connection fault STANDBY check
    ceph: remove fragile __map_osds optimization
    ceph: remove bogus mds forward warning
    ceph: reset bits on connection close
    ceph: use single osd op reply msg
    ceph: fix snaptrace decoding on cap migration between mds
    ceph: reset front len on return to msgpool; BUG on mismatched front iov
    ceph: set osd request message front length correctly
    ceph: return EBADF if waiting for caps on closed file
    ceph: fix osdmap decoding when pools include (removed) snaps
    ceph: include migrating caps in issued set
    ceph: fix flush_dirty_caps race with caps migration

    Yehuda Sadeh (24):
    ceph: mount fails immediately on error
    ceph: fix msgpool reservation leak
    ceph: remove unaccessible code
    ceph: writepage grabs and releases inode
    ceph: writeback congestion control
    ceph: fix copy_user_to_page_vector()
    ceph: change dentry offset and position after splice_dentry
    ceph: allocate middle of message before stating to read
    ceph: refactor messages data section allocation
    ceph: alloc message data pages and check if tid exists
    ceph: keep reserved replies on the request structure
    ceph: remove unreachable code
    ceph: always send truncation info with read and write osd ops
    ceph: remove unused variable
    ceph: put unused osd connections on lru
    ceph: fix short synchronous reads
    ceph: refactor ceph_write_begin, fix ceph_page_mkwrite
    ceph: fix truncation when not holding caps
    ceph: sync read/write considers page cache
    ceph: remove page upon writeback completion if lost cache cap
    ceph: don't truncate dirty pages in invalidate work thread
    ceph: cleanup redundant code in handle_cap_grant
    ceph: don't clobber write return value when using O_SYNC
    ceph: reset osd after relevant messages timed out

    Documentation/filesystems/ceph.txt | 139 ++
    Documentation/ioctl/ioctl-number.txt | 1 +
    fs/Kconfig | 1 +
    fs/Makefile | 1 +
    fs/ceph/Kconfig | 27 +
    fs/ceph/Makefile | 39 +
    fs/ceph/README | 20 +
    fs/ceph/addr.c | 1188 +++++++++++++
    fs/ceph/armor.c | 99 ++
    fs/ceph/auth.c | 257 +++
    fs/ceph/auth.h | 84 +
    fs/ceph/auth_none.c | 121 ++
    fs/ceph/auth_none.h | 28 +
    fs/ceph/auth_x.c | 656 ++++++++
    fs/ceph/auth_x.h | 49 +
    fs/ceph/auth_x_protocol.h | 90 +
    fs/ceph/buffer.c | 78 +
    fs/ceph/buffer.h | 39 +
    fs/ceph/caps.c | 2925 ++++++++++++++++++++++++++++++++
    fs/ceph/ceph_debug.h | 37 +
    fs/ceph/ceph_frag.c | 21 +
    fs/ceph/ceph_frag.h | 109 ++
    fs/ceph/ceph_fs.c | 74 +
    fs/ceph/ceph_fs.h | 650 ++++++++
    fs/ceph/ceph_hash.c | 118 ++
    fs/ceph/ceph_hash.h | 13 +
    fs/ceph/ceph_strings.c | 176 ++
    fs/ceph/crush/crush.c | 151 ++
    fs/ceph/crush/crush.h | 180 ++
    fs/ceph/crush/hash.c | 149 ++
    fs/ceph/crush/hash.h | 17 +
    fs/ceph/crush/mapper.c | 596 +++++++
    fs/ceph/crush/mapper.h | 20 +
    fs/ceph/crypto.c | 408 +++++
    fs/ceph/crypto.h | 48 +
    fs/ceph/debugfs.c | 483 ++++++
    fs/ceph/decode.h | 194 +++
    fs/ceph/dir.c | 1220 ++++++++++++++
    fs/ceph/export.c | 223 +++
    fs/ceph/file.c | 937 +++++++++++
    fs/ceph/inode.c | 1750 ++++++++++++++++++++
    fs/ceph/ioctl.c | 160 ++
    fs/ceph/ioctl.h | 40 +
    fs/ceph/mds_client.c | 3021 ++++++++++++++++++++++++++++++++++
    fs/ceph/mds_client.h | 335 ++++
    fs/ceph/mdsmap.c | 174 ++
    fs/ceph/mdsmap.h | 54 +
    fs/ceph/messenger.c | 2240 +++++++++++++++++++++++++
    fs/ceph/messenger.h | 254 +++
    fs/ceph/mon_client.c | 834 ++++++++++
    fs/ceph/mon_client.h | 119 ++
    fs/ceph/msgpool.c | 186 +++
    fs/ceph/msgpool.h | 27 +
    fs/ceph/msgr.h | 158 ++
    fs/ceph/osd_client.c | 1537 +++++++++++++++++
    fs/ceph/osd_client.h | 166 ++
    fs/ceph/osdmap.c | 1019 ++++++++++++
    fs/ceph/osdmap.h | 125 ++
    fs/ceph/pagelist.c | 54 +
    fs/ceph/pagelist.h | 54 +
    fs/ceph/rados.h | 374 +++++
    fs/ceph/snap.c | 904 ++++++++++
    fs/ceph/super.c | 1030 ++++++++++++
    fs/ceph/super.h | 900 ++++++++++
    fs/ceph/types.h | 29 +
    fs/ceph/xattr.c | 844 ++++++++++
    67 files changed, 28063 insertions(+), 0 deletions(-)

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