提交 · 91fd4dad64ce7ac48c4c30c7756c6d3c41e8ad0a · openeuler / raspberrypi-kernel

08 11月, 2012 40 次提交

drbd: Proper locking for updates to net_conf under RCU · 91fd4dad

由 Philipp Reisner 提交于 4月 20, 2011

Removing the get_net_conf()/put_net_conf() functions
Signed-off-by: NPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: NLars Ellenberg <lars.ellenberg@linbit.com>

91fd4dad

drbd: rcu_read_lock() and rcu_dereference() for tconn->net_conf · 44ed167d

由 Philipp Reisner 提交于 4月 19, 2011

Removing the get_net_conf()/put_net_conf() calls
Signed-off-by: NPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: NLars Ellenberg <lars.ellenberg@linbit.com>

44ed167d

drbd: Runtime changeable wire protocol · 303d1448

由 Philipp Reisner 提交于 4月 13, 2011

The wire protocol is no longer a property that is negotiated
between the two peers. It is now expressed with two bits
(DP_SEND_WRITE_ACK and DP_SEND_RECEIVE_ACK) in each data
packet. Therefore the primary node is free to change the
wire protocol at any time without disconnect/reconnect.
Signed-off-by: NPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: NLars Ellenberg <lars.ellenberg@linbit.com>

303d1448

drbd: protect all idr accesses that might sleep with drbd_cfg_rwsem · d3fcb490

由 Philipp Reisner 提交于 4月 13, 2011

With this commit the locking for all accesses to IDRs is complete:

 * Non sleeping read accesses are protected by RCU
 * sleeping read accesses are protocted by a read lock on drbd_cfg_rwsem
 * accesses that add anything are protected by a write lock
 * accesses that remove an object are protoected by a write lock
   and a call to synchronize_rcu() after it is removed from the IDR
   and before the object is actually free()ed.
Signed-off-by: NPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: NLars Ellenberg <lars.ellenberg@linbit.com>

d3fcb490

drbd: Converted drbd_cfg_mutex into drbd_cfg_rwsem · ef356262

由 Philipp Reisner 提交于 4月 13, 2011

Signed-off-by: NPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: NLars Ellenberg <lars.ellenberg@linbit.com>

ef356262

drbd: rcu_read_[un]lock() for all idr accesses that do not sleep · 695d08fa

由 Philipp Reisner 提交于 4月 11, 2011

Signed-off-by: NPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: NLars Ellenberg <lars.ellenberg@linbit.com>

695d08fa

P
drbd: Inlined drbd_free_mdev(); it got called only from one place · cd1d9950
由 Philipp Reisner 提交于 4月 11, 2011
```
Signed-off-by: NPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: NLars Ellenberg <lars.ellenberg@linbit.com>
```
cd1d9950

drbd: drbd_delete_device() takes a struct drbd_conf * now · ff370e5a

由 Philipp Reisner 提交于 4月 11, 2011

Signed-off-by: NPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: NLars Ellenberg <lars.ellenberg@linbit.com>

ff370e5a

drbd: Rename drbd_release_ee() to drbd_free_peer_reqs() · 7721f567

由 Andreas Gruenbacher 提交于 4月 06, 2011

Signed-off-by: NPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: NLars Ellenberg <lars.ellenberg@linbit.com>

7721f567

drbd: drbd_init_ee() no longer exists · e0ab6ad4

由 Andreas Gruenbacher 提交于 4月 06, 2011

Signed-off-by: NPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: NLars Ellenberg <lars.ellenberg@linbit.com>

e0ab6ad4

drbd: Removed outdated comments and code that envisioned VNRs in header 95 · b55d84ba

由 Andreas Gruenbacher 提交于 3月 22, 2011

Since have now header 100, that has space for 16 bit volume numbers,
the high byte of the length in header 95 is no longer reserved for
8 bit volume numbers.
Signed-off-by: NPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: NLars Ellenberg <lars.ellenberg@linbit.com>

b55d84ba

drbd: Introduce protocol version 100 headers · 0c8e36d9

由 Andreas Gruenbacher 提交于 3月 30, 2011

The 8 byte header finally becomes too small. With the protocol 100 header we
have 16 bit for the volume number, proper 32 bit for the data length, and
32 bit for further extensions in the future.

Previous versions of drbd are using version 80 headers for all packets
short enough for protocol 80.  They support both header versions in
worker context, but only version 80 headers in asynchronous context.
For backwards compatibility, continue to use version 80 headers for
short packets before protocol version 100.

From protocol version 100 on, use the same header version for all
packets.
Signed-off-by: NPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: NLars Ellenberg <lars.ellenberg@linbit.com>

0c8e36d9

drbd: Remove headers from on-the-wire data structures (struct p_*) · e658983a

由 Andreas Gruenbacher 提交于 3月 30, 2011

Prepare the introduction of the protocol 100 headers. The actual protocol
header is removed for the packet declarations. I.e. allow us to use the
packets with different headers.
Signed-off-by: NPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: NLars Ellenberg <lars.ellenberg@linbit.com>

e658983a

drbd: Remove some fixed header size assumptions · 50d0b1ad

由 Andreas Gruenbacher 提交于 3月 30, 2011

Signed-off-by: NPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: NLars Ellenberg <lars.ellenberg@linbit.com>

50d0b1ad

drbd: Remove now-unused int_dig_out buffer · da39fec4

由 Andreas Gruenbacher 提交于 3月 31, 2011

Signed-off-by: NPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: NLars Ellenberg <lars.ellenberg@linbit.com>

da39fec4

drbd: Replace and remove old primitives · 9f5bdc33

由 Andreas Gruenbacher 提交于 3月 28, 2011

Centralize sock->mutex locking and unlocking in [drbd|conn]_prepare_command()
and [drbd|conn]_send_comman().

Therefore all *_send_* functions are touched to use these primitives instead
of drbd_get_data_sock()/drbd_put_data_sock() and former helper functions.

That change makes the *_send_* functions more standardized.
Signed-off-by: NPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: NLars Ellenberg <lars.ellenberg@linbit.com>

9f5bdc33

drbd: Introduce drbd_header_size() · 52b061a4

由 Andreas Gruenbacher 提交于 3月 30, 2011

Signed-off-by: NPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: NLars Ellenberg <lars.ellenberg@linbit.com>

52b061a4

drbd: Introduce new primitives for sending commands · dba58587

由 Andreas Gruenbacher 提交于 3月 29, 2011

Signed-off-by: NPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: NLars Ellenberg <lars.ellenberg@linbit.com>

dba58587

A
drbd: drbd_send_ping(), drbd_send_ping(): Return 0 upon success and an error code otherwise · a17647aa
由 Andreas Gruenbacher 提交于 4月 01, 2011
```
Signed-off-by: NPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: NLars Ellenberg <lars.ellenberg@linbit.com>
```
a17647aa

drbd: Introduced a new type union drbd_dev_state · da9fbc27

由 Philipp Reisner 提交于 3月 29, 2011

Signed-off-by: NPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: NLars Ellenberg <lars.ellenberg@linbit.com>

da9fbc27

drbd: Change how the "handshake" packets are called · 6038178e

由 Andreas Gruenbacher 提交于 3月 28, 2011

Packets of type P_HAND_SHAKE define which protocol versions and features
a node supports.  For clarity, call those packets P_CONNECTION_FEATURES
instead.

(This does not determine the features that a specific drbd device
supports, such as drbd protocol A, B, C.)
Signed-off-by: NPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: NLars Ellenberg <lars.ellenberg@linbit.com>

6038178e

drbd: Change how the initial packets are called · e5d6f33a

由 Andreas Gruenbacher 提交于 3月 28, 2011

The first packets exchanged when a connection is established are
referred to as P_HAND_SHAKE_S and P_HAND_SHAKE_M in the code, followed
by P_HAND_SHAKE packets. To avoid confusion between these two unrelated
things, call the initial packets P_INITIAL_DATA and P_INITIAL_META.
Signed-off-by: NPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: NLars Ellenberg <lars.ellenberg@linbit.com>

e5d6f33a

A
drbd: _conn_send_cmd(), _drbd_send_cmd(): Pass a struct drbd_socket instead of a plain socket · 7c96715a
由 Andreas Gruenbacher 提交于 3月 22, 2011
```
Signed-off-by: NPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: NLars Ellenberg <lars.ellenberg@linbit.com>
```
7c96715a

drbd: _drbd_send_bitmap(): Use the pre-allocated send buffer · 79ed9bd0

由 Andreas Gruenbacher 提交于 3月 24, 2011

Signed-off-by: NPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: NLars Ellenberg <lars.ellenberg@linbit.com>

79ed9bd0

drbd: Preallocate one page per drbd_socket as a send buffer · 5a87d920

由 Andreas Gruenbacher 提交于 3月 24, 2011

Signed-off-by: NPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: NLars Ellenberg <lars.ellenberg@linbit.com>

5a87d920

A
drbd: Preallocate one page per drbd_socket as a receive buffer · e6ef8a5c
由 Andreas Gruenbacher 提交于 3月 24, 2011
```
Signed-off-by: NPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: NLars Ellenberg <lars.ellenberg@linbit.com>
```
e6ef8a5c
A
drbd: Rename the DCBP_* functions to dcbp_* and move them to where they are used · a02d1240
由 Andreas Gruenbacher 提交于 3月 22, 2011
```
Signed-off-by: NPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: NLars Ellenberg <lars.ellenberg@linbit.com>
```
a02d1240

drbd: Make _drbd_send_bitmap() static · 058820cd

由 Andreas Gruenbacher 提交于 3月 22, 2011

Signed-off-by: NPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: NLars Ellenberg <lars.ellenberg@linbit.com>

058820cd

A
drbd: Move drbd_send_ping() and drbd_send_ping_ack() to drbd_main.c · e307f352
由 Andreas Gruenbacher 提交于 3月 22, 2011
```
Signed-off-by: NPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: NLars Ellenberg <lars.ellenberg@linbit.com>
```
e307f352

drbd: Always use the same protocol version for the same peer · 0916e0e3

由 Andreas Gruenbacher 提交于 3月 21, 2011

There is no need to send protocol 80 headers to peers that understand
protocol 95 headers. Make sure that we don't send protocol 95 headers
until we have agreed upon a protocol version with our peer, though.
Signed-off-by: NPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: NLars Ellenberg <lars.ellenberg@linbit.com>

0916e0e3

A
drbd: Rename various functions from *_oos_* to *_out_of_sync_* for clarity · 8f7bed77
由 Andreas Gruenbacher 提交于 12月 19, 2010
```
Signed-off-by: NPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: NLars Ellenberg <lars.ellenberg@linbit.com>
```
8f7bed77
A
drbd: drbd_md_sync_page_io(): Return 0 upon success and an error code otherwise · 3fbf4d21
由 Andreas Gruenbacher 提交于 12月 13, 2010
```
Signed-off-by: NPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: NLars Ellenberg <lars.ellenberg@linbit.com>
```
3fbf4d21

drbd: send_bitmap_rle_or_plain(): Error handling cleanup · a982dd57

由 Andreas Gruenbacher 提交于 12月 10, 2010

Signed-off-by: NPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: NLars Ellenberg <lars.ellenberg@linbit.com>

a982dd57

A
drbd: Make all worker callbacks return 0 upon success and an error code otherwise · 99920dc5
由 Andreas Gruenbacher 提交于 3月 16, 2011
```
Signed-off-by: NPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: NLars Ellenberg <lars.ellenberg@linbit.com>
```
99920dc5

drbd: Temporarily change the return type of all worker callbacks · b2f0ab62

由 Andreas Gruenbacher 提交于 3月 16, 2011

This helps to ensure that we don't miss one of them when changing their
return value semantics.
Signed-off-by: NPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: NLars Ellenberg <lars.ellenberg@linbit.com>

b2f0ab62

A
drbd: drbd_send_dblock(): Return 0 upon success and an error code otherwise · 6bdb9b0e
由 Andreas Gruenbacher 提交于 3月 16, 2011
```
Signed-off-by: NPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: NLars Ellenberg <lars.ellenberg@linbit.com>
```
6bdb9b0e
A
drbd: _drbd_send_bio(), _drbd_send_zc_bio(): Return 0 upon success and an error code otherwise · 7fae55da
由 Andreas Gruenbacher 提交于 3月 16, 2011
```
Signed-off-by: NPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: NLars Ellenberg <lars.ellenberg@linbit.com>
```
7fae55da
A
drbd: drbd_send_block(): Return 0 upon success and an error code otherwise · 7b57b89d
由 Andreas Gruenbacher 提交于 3月 16, 2011
```
Signed-off-by: NPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: NLars Ellenberg <lars.ellenberg@linbit.com>
```
7b57b89d
A
drbd: _drbd_send_zc_ee(): Return 0 upon success and an error code otherwise · 9f69230c
由 Andreas Gruenbacher 提交于 3月 16, 2011
```
Signed-off-by: NPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: NLars Ellenberg <lars.ellenberg@linbit.com>
```
9f69230c
A
drbd: _drbd_send_page(): Return 0 upon success and an error code otherwise · 88b390ff
由 Andreas Gruenbacher 提交于 3月 16, 2011
```
Signed-off-by: NPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: NLars Ellenberg <lars.ellenberg@linbit.com>
```
88b390ff