android_kernel_xiaomi_sm8350/fs/ocfs2
Joel Becker d24fbcda0c ocfs2: Negotiate locking protocol versions.
Currently, when ocfs2 nodes connect via TCP, they advertise their
compatibility level.  If the versions do not match, two nodes cannot speak
to each other and they disconnect. As a result, this provides no forward or
backwards compatibility.

This patch implements a simple protocol negotiation at the dlm level by
introducing a major/minor version number scheme for entities that
communicate.  Specifically, o2dlm has a major/minor version for interaction
with o2dlm on other nodes, and ocfs2 itself has a major/minor version for
interacting with the filesystem on other nodes.

This will allow rolling upgrades of ocfs2 clusters when changes to the
locking or network protocols can be done in a backwards compatible manner.
In those cases, only the minor number is changed and the negotatied protocol
minor is returned from dlm join. In the far less likely event that a
required protocol change makes backwards compatibility impossible, we simply
bump the major number.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2008-02-06 16:11:29 -08:00
..
cluster ocfs2: Negotiate locking protocol versions. 2008-02-06 16:11:29 -08:00
dlm ocfs2: Negotiate locking protocol versions. 2008-02-06 16:11:29 -08:00
alloc.c Pagecache zeroing: zero_user_segment, zero_user_segments and zero_user 2008-02-05 09:44:13 -08:00
alloc.h
aops.c Pagecache zeroing: zero_user_segment, zero_user_segments and zero_user 2008-02-05 09:44:13 -08:00
aops.h
buffer_head_io.c ocfs2: clean up bh null checks 2008-01-25 15:05:48 -08:00
buffer_head_io.h [PATCH 1/2] ocfs2: Add group extend for online resize 2008-01-25 14:53:35 -08:00
dcache.c ocfs2: Remove mount/unmount votes 2008-01-25 14:45:34 -08:00
dcache.h
dir.c fs/: Spelling fixes 2008-02-03 17:33:42 +02:00
dir.h
dlmglue.c ocfs2: Negotiate locking protocol versions. 2008-02-06 16:11:29 -08:00
dlmglue.h ocfs2: Negotiate locking protocol versions. 2008-02-06 16:11:29 -08:00
endian.h ocfs2: convert byte order of constant instead of variable 2008-01-25 15:05:46 -08:00
export.c ocfs2: Silence false lockdep warnings 2008-01-25 15:05:44 -08:00
export.h
extent_map.c
extent_map.h
file.c ocfs2: printf fixes 2008-01-25 15:05:45 -08:00
file.h [PATCH 1/2] ocfs2: add flock lock type 2008-01-25 15:05:43 -08:00
heartbeat.c ocfs2: Remove mount/unmount votes 2008-01-25 14:45:34 -08:00
heartbeat.h ocfs2: Remove fs dependency on ocfs2_heartbeat module 2008-01-25 14:36:40 -08:00
inode.c ocfs2: convert byte order of constant instead of variable 2008-01-25 15:05:46 -08:00
inode.h ocfs2: Silence false lockdep warnings 2008-01-25 15:05:44 -08:00
ioctl.c ocfs2: Add missing permission checks 2008-01-25 15:05:19 -08:00
ioctl.h
journal.c ocfs2: Silence false lockdep warnings 2008-01-25 15:05:44 -08:00
journal.h [PATCH 2/2] ocfs2: Implement group add for online resize 2008-01-25 15:04:24 -08:00
localalloc.c ocfs2: Local alloc window size changeable via mount option 2008-01-25 15:05:43 -08:00
localalloc.h
locks.c [PATCH 2/2] ocfs2: cluster aware flock() 2008-01-25 15:05:43 -08:00
locks.h [PATCH 2/2] ocfs2: cluster aware flock() 2008-01-25 15:05:43 -08:00
Makefile [PATCH 2/2] ocfs2: cluster aware flock() 2008-01-25 15:05:43 -08:00
mmap.c ocfs2: Rename ocfs2_meta_[un]lock 2008-01-25 14:46:01 -08:00
mmap.h
namei.c ocfs2: Silence false lockdep warnings 2008-01-25 15:05:44 -08:00
namei.h
ocfs1_fs_compat.h fs/: Spelling fixes 2008-02-03 17:33:42 +02:00
ocfs2_fs.h ocfs2: Local alloc window size changeable via mount option 2008-01-25 15:05:43 -08:00
ocfs2_lockid.h [PATCH 1/2] ocfs2: add flock lock type 2008-01-25 15:05:43 -08:00
ocfs2_lockingver.h ocfs2: Negotiate locking protocol versions. 2008-02-06 16:11:29 -08:00
ocfs2.h ocfs2: Negotiate locking protocol versions. 2008-02-06 16:11:29 -08:00
resize.c ocfs2: clean up bh null checks 2008-01-25 15:05:48 -08:00
resize.h [PATCH 2/2] ocfs2: Implement group add for online resize 2008-01-25 15:04:24 -08:00
slot_map.c ocfs2: Remove mount/unmount votes 2008-01-25 14:45:34 -08:00
slot_map.h ocfs2: Remove mount/unmount votes 2008-01-25 14:45:34 -08:00
suballoc.c fs/: Spelling fixes 2008-02-03 17:33:42 +02:00
suballoc.h [PATCH 1/2] ocfs2: Add group extend for online resize 2008-01-25 14:53:35 -08:00
super.c ocfs2: Negotiate locking protocol versions. 2008-02-06 16:11:29 -08:00
super.h
symlink.c
symlink.h
sysfile.c ocfs2: Silence false lockdep warnings 2008-01-25 15:05:44 -08:00
sysfile.h
uptodate.c
uptodate.h
ver.c ocfs2: bump version number 2008-01-25 15:05:46 -08:00
ver.h