Sage Weil a8599bd821 ceph: capability management ...

The Ceph metadata servers control client access to inode metadata and
file data by issuing capabilities, granting clients permission to read
and/or write both inode field and file data to OSDs (storage nodes).
Each capability consists of a set of bits indicating which operations
are allowed.

If the client holds a *_SHARED cap, the client has a coherent value
that can be safely read from the cached inode.

In the case of a *_EXCL (exclusive) or FILE_WR capabilities, the client
is allowed to change inode attributes (e.g., file size, mtime), note
its dirty state in the ceph_cap, and asynchronously flush that
metadata change to the MDS.

In the event of a conflicting operation (perhaps by another client),
the MDS will revoke the conflicting client capabilities.

In order for a client to cache an inode, it must hold a capability
with at least one MDS server.  When inodes are released, release
notifications are batched and periodically sent en masse to the MDS
cluster to release server state.

Signed-off-by: Sage Weil <sage@newdream.net>

2009-10-06 11:31:12 -07:00

..

9p

9p: Add fscache support to 9p

2009-09-23 13:03:46 -05:00

adfs

adfs: remove redundant test on unsigned

2009-09-24 07:21:05 -07:00

affs

affs: add ->sync_fs

2009-06-11 21:36:14 -04:00

afs

seq_file: constify seq_operations

2009-09-23 07:39:29 -07:00

autofs

trivial: remove unnecessary semicolons

2009-09-21 15:14:58 +02:00

autofs4

autofs4 - fix missed case when changing to use struct path

2009-08-31 17:44:05 -10:00

befs

fs: Make unload_nls() NULL pointer safe

2009-09-24 07:47:42 -04:00

bfs

headers: smp_lock.h redux

2009-07-12 12:22:34 -07:00

btrfs

const: mark struct vm_struct_operations

2009-09-27 11:39:25 -07:00

cachefiles

enforce ->sync_fs is only called for rw superblock

2009-06-11 21:36:06 -04:00

ceph

ceph: capability management

2009-10-06 11:31:12 -07:00

cifs

Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6

2009-09-26 10:10:35 -07:00

coda

sysctl: remove "struct file *" argument of ->proc_handler

2009-09-24 07:21:04 -07:00

configfs

writeback: add name to backing_dev_info

2009-09-11 09:20:26 +02:00

cramfs

fs/cramfs: return f_fsid for statfs(2)

2009-04-02 19:05:08 -07:00

debugfs

debugfs: use specified mode to possibly mark files read/write only

2009-06-15 21:30:28 -07:00

devpts

Move magic numbers into magic.h

2009-09-23 07:39:28 -07:00

dlm

seq_file: constify seq_operations

2009-09-23 07:39:29 -07:00

ecryptfs

eCryptfs: Prevent lower dentry from going negative during unlink

2009-09-23 09:10:34 -05:00

efs

get rid of BKL in fs/efs

2009-06-17 00:36:36 -04:00

exofs

exofs: remove BKL from super operations

2009-09-24 07:47:38 -04:00

exportfs

…

ext2

Merge branch 'hwpoison' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-mce-2.6

2009-09-24 07:53:22 -07:00

ext3

Merge branch 'hwpoison' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-mce-2.6

2009-09-24 07:53:22 -07:00

ext4

const: mark struct vm_struct_operations

2009-09-27 11:39:25 -07:00

fat

fs: Make unload_nls() NULL pointer safe

2009-09-24 07:47:42 -04:00

freevxfs

headers: smp_lock.h redux

2009-07-12 12:22:34 -07:00

fscache

FS-Cache: Fixup renamed filenames in comments in internal.h

2009-05-27 10:20:13 -07:00

fuse

const: mark struct vm_struct_operations

2009-09-27 11:39:25 -07:00

gfs2

const: mark struct vm_struct_operations

2009-09-27 11:39:25 -07:00

hfs

fs: Make unload_nls() NULL pointer safe

2009-09-24 07:47:42 -04:00

hfsplus

fs: Make unload_nls() NULL pointer safe

2009-09-24 07:47:42 -04:00

hostfs

hostfs: set maximum filesize in superblock for proper LFS support

2009-06-30 18:56:03 -07:00

hpfs

headers: smp_lock.h redux

2009-07-12 12:22:34 -07:00

hppfs

hppfs: hppfs_read_file() may return -ERROR

2009-04-02 19:04:53 -07:00

hugetlbfs

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6

2009-09-24 08:32:11 -07:00

isofs

fs: Make unload_nls() NULL pointer safe

2009-09-24 07:47:42 -04:00

jbd

jbd: Annotate transaction start also for journal_restart()

2009-09-16 17:44:10 +02:00

jbd2

seq_file: constify seq_operations

2009-09-23 07:39:29 -07:00

jffs2

Merge git://git.infradead.org/mtd-2.6

2009-09-23 10:07:49 -07:00

jfs

fs: Make unload_nls() NULL pointer safe

2009-09-24 07:47:42 -04:00

lockd

headers: utsname.h redux

2009-09-23 18:13:10 -07:00

minix

V3 minixfs: add missing directory type checking

2009-09-23 07:39:57 -07:00

ncpfs

const: mark struct vm_struct_operations

2009-09-27 11:39:25 -07:00

nfs

const: mark struct vm_struct_operations

2009-09-27 11:39:25 -07:00

nfs_common

…

nfsd

headers: utsname.h redux

2009-09-23 18:13:10 -07:00

nilfs2

const: mark struct vm_struct_operations

2009-09-27 11:39:25 -07:00

nls

fs: Make unload_nls() NULL pointer safe

2009-09-24 07:47:42 -04:00

notify

inotify: update the group mask on mark addition

2009-08-28 12:51:14 -04:00

ntfs

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6

2009-09-24 08:32:11 -07:00

ocfs2

const: mark struct vm_struct_operations

2009-09-27 11:39:25 -07:00

omfs

const: mark remaining inode_operations as const

2009-09-22 07:17:24 -07:00

openpromfs

…

partitions

const: make block_device_operations const

2009-09-22 07:17:25 -07:00

proc

procfs: disable per-task stack usage on NOMMU

2009-09-24 17:11:24 -07:00

qnx4

qnx4: remove write support

2009-09-23 07:39:30 -07:00

quota

const: make struct super_block::s_qcop const

2009-09-22 07:17:24 -07:00

ramfs

truncate: use new helpers

2009-09-24 08:41:47 -04:00

reiserfs

const: make struct super_block::s_qcop const

2009-09-22 07:17:24 -07:00

romfs

fs/romfs: correct error-handling code

2009-09-24 07:21:05 -07:00

smbfs

fs: Make unload_nls() NULL pointer safe

2009-09-24 07:47:42 -04:00

squashfs

const: mark remaining super_operations const

2009-09-22 07:17:24 -07:00

sysfs

const: mark struct vm_struct_operations

2009-09-27 11:39:25 -07:00

sysv

get rid of BKL in fs/sysv

2009-06-17 00:36:37 -04:00

ubifs

const: mark struct vm_struct_operations

2009-09-27 11:39:25 -07:00

udf

udf: Fix possible corruption when close races with write

2009-09-14 19:13:01 +02:00

ufs

ufs: sector_t cannot be negative

2009-06-18 13:03:46 -07:00

xfs

const: mark struct vm_struct_operations

2009-09-27 11:39:25 -07:00

aio.c

aio.c: move EXPORT* macros to line after function

2009-09-23 07:39:29 -07:00

anon_inodes.c

anonfd: split interface into file creation and install

2009-09-23 07:39:29 -07:00

attr.c

truncate: new helpers

2009-09-24 08:41:47 -04:00

bad_inode.c

…

binfmt_aout.c

…

binfmt_elf_fdpic.c

fdpic: ignore the loader's PT_GNU_STACK when calculating the stack size

2009-09-24 07:21:02 -07:00

binfmt_elf.c

elf: clean up fill_note_info()

2009-09-24 07:21:01 -07:00

binfmt_em86.c

…

binfmt_flat.c

flat: use IS_ERR_VALUE() helper macro

2009-09-24 07:21:03 -07:00

binfmt_misc.c

fs/binfmt_misc.c: add terminating newline to /proc/sys/fs/binfmt_misc/status

2009-01-06 15:59:19 -08:00

binfmt_script.c

…

binfmt_som.c

Don't crap into descriptor table in binfmt_som

2009-03-31 23:00:28 -04:00

bio-integrity.c

block: Create bip slabs with embedded integrity vectors

2009-07-01 10:56:25 +02:00

bio.c

block: fix sg SG_DXFER_TO_FROM_DEV regression

2009-07-10 20:31:53 +02:00

block_dev.c

freeze_bdev: grab active reference to frozen superblocks

2009-09-24 07:47:41 -04:00

buffer.c

Merge branch 'writeback' of git://git.kernel.dk/linux-2.6-block

2009-09-25 09:27:30 -07:00

char_dev.c

fs/char_dev.c: remove useless loop

2009-09-24 07:21:03 -07:00

compat_binfmt_elf.c

…

compat_ioctl.c

compat_ioctl: hook up compat handler for FIEMAP ioctl

2009-08-07 10:39:56 -07:00

compat.c

fs: fix overflow in sys_mount() for in-kernel calls

2009-09-24 08:40:15 -04:00

dcache.c

sched: Pull up the might_sleep() check into cond_resched()

2009-07-18 15:51:44 +02:00

dcookies.c

[CVE-2009-0029] System call wrapper special cases

2009-01-14 14:15:18 +01:00

direct-io.c

block: Do away with the notion of hardsect_size

2009-05-22 23:22:54 +02:00

drop_caches.c

sysctl: remove "struct file *" argument of ->proc_handler

2009-09-24 07:21:04 -07:00

eventfd.c

anonfd: split interface into file creation and install

2009-09-23 07:39:29 -07:00

eventpoll.c

epoll: fix nested calls support

2009-06-18 13:03:41 -07:00

exec.c

task_struct cleanup: move binfmt field to mm_struct

2009-09-24 07:21:05 -07:00

fcntl.c

fcntl: add F_[SG]ETOWN_EX

2009-09-24 07:21:01 -07:00

fifo.c

…

file_table.c

sysctl: remove "struct file *" argument of ->proc_handler

2009-09-24 07:21:04 -07:00

file.c

…

filesystems.c

fs: Mark get_filesystem_list() as __init function.

2009-04-20 23:02:52 -04:00

fs_struct.c

Get rid of indirect include of fs_struct.h

2009-03-31 23:00:27 -04:00

fs-writeback.c

writeback: pass in super_block to bdi_start_writeback()

2009-09-26 00:10:40 +02:00

generic_acl.c

New helper - current_umask()

2009-03-31 23:00:26 -04:00

inode.c

vfs: optimize touch_time() too

2009-09-24 07:47:27 -04:00

internal.h

fs: fix overflow in sys_mount() for in-kernel calls

2009-09-24 08:40:15 -04:00

ioctl.c

vfs: explicitly cast s_maxbytes in fiemap_check_ranges

2009-09-24 07:47:31 -04:00

ioprio.c

[CVE-2009-0029] System call wrappers part 28

2009-01-14 14:15:30 +01:00

Kconfig

tmpfs: depend on shmem

2009-09-22 07:17:41 -07:00

Kconfig.binfmt

CORE_DUMP_DEFAULT_ELF_HEADERS depends on ELF_CORE

2009-01-09 16:54:41 -08:00

libfs.c

libfs: return error code on failed attr set

2009-09-24 07:47:30 -04:00

locks.c

const: make lock_manager_operations const

2009-09-22 07:17:25 -07:00

Makefile

nilfs2: update makefile and Kconfig

2009-04-07 08:31:16 -07:00

mbcache.c

…

mpage.c

ext4: Properly initialize the buffer_head state

2009-05-13 15:13:42 -04:00

namei.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6

2009-09-11 08:55:49 -07:00

namespace.c

fs: fix overflow in sys_mount() for in-kernel calls

2009-09-24 08:40:15 -04:00

nfsctl.c

[CVE-2009-0029] System call wrappers part 27

2009-01-14 14:15:29 +01:00

no-block.c

…

open.c

fs: change sys_truncate length parameter type

2009-09-23 09:21:05 -07:00

pipe.c

lockdep: Fix lockdep annotation for pipe_double_lock()

2009-07-22 21:14:14 +02:00

pnode.c

…

pnode.h

…

posix_acl.c

…

read_write.c

vfs: remove redundant position check in do_sendfile

2009-09-24 07:47:34 -04:00

read_write.h

…

readdir.c

[CVE-2009-0029] System call wrappers part 32

2009-01-14 14:15:31 +01:00

select.c

poll/select: avoid arithmetic overflow in __estimate_accuracy()

2009-09-23 07:39:27 -07:00

seq_file.c

vfs: seq_file: add helpers for data filling

2009-09-24 07:47:35 -04:00

signalfd.c

[CVE-2009-0029] System call wrappers part 31

2009-01-14 14:15:31 +01:00

splice.c

Merge branch 'for-2.6.32' of git://git.kernel.dk/linux-2.6-block

2009-09-14 17:55:15 -07:00

stack.c

…

stat.c

kill vfs_stat_fd / vfs_lstat_fd

2009-04-20 23:02:52 -04:00

super.c

freeze_bdev: grab active reference to frozen superblocks

2009-09-24 07:47:41 -04:00

sync.c

fs/buffer.c: clean up EXPORT* macros

2009-09-23 07:39:29 -07:00

timerfd.c

timerfd: add flags check

2009-02-18 15:37:53 -08:00

utimes.c

[CVE-2009-0029] System call wrappers part 30

2009-01-14 14:15:30 +01:00

xattr_acl.c

…

xattr.c

VFS: Factor out part of vfs_setxattr so it can be called from the SELinux hook for inode_setsecctx.

2009-09-10 10:11:22 +10:00