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40 Commits

Author SHA1 Message Date
Robert Baldyga
ba7f693cff Clean cas_disk_defs.h header 
Move definitions used only in only one source code file to that file.

Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2022-09-07 10:44:45 +02:00
Robert Baldyga
320c998a1d Remove cas_disk message prefixes 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2022-09-07 10:44:37 +02:00
Robert Baldyga
f70789e127 Remove cas_disk kobject 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2022-08-31 17:55:53 +02:00
Robert Baldyga
4881e6c0f0 Remove casdsk_disk mode 
The mode is no longer needed. Remove remaining dead code.

Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2022-08-25 13:02:25 +02:00
Robert Baldyga
16576c7a95 Remove "mode" sysfs property of casdsk_disk 
After removal of PT mode this property is meaningless.

Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2022-08-25 13:02:25 +02:00
Robert Baldyga
563aeb0058 Remove casdsk_disk_shutdown_all() 
As we no longer have in flight upgrade, all exported objects are guaranteed
to be destroyed before cas_cache module is unloaded, so this deinit
mechanism is not needed anymore.

Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2022-08-25 13:02:25 +02:00
Robert Baldyga
10910d1a65 Remove PT mode from cas_disk 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2022-08-25 12:34:59 +02:00
Robert Baldyga
3102856025 Remove unused exported symbols from cas_disk 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2022-08-25 12:33:51 +02:00
Krzysztof Majzerowicz-Jaszcz
e997f768b0 Rework for RHEL8.5 
Rework for RHEL8.5 compatibility to avoid potential bug of exiting queue
after IO completion on a different CPU.

Targeted RHEL kernel version corrected.

Signed-off-by: Krzysztof Majzerowicz-Jaszcz <krzysztof.majzerowicz-jaszcz@intel.com>
 2022-08-16 13:50:59 +02:00
Adam Rutkowski
738a07c821 avoid overflow in disk openers counter 
Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2022-06-27 16:21:44 +02:00
Krzysztof Majzerowicz-Jaszcz
12ddca1cf3 OpenCAS Linux kernel 5.15 adaptation 
This patch adapts OpenCAS Linux to compile and work with kernel v5.15

Commit id's from the kernel affecting OpenCAS:

commit 0e0ccdecb3cff95a350b4364e7ebbaa754d0e47d
    block: remove bdget_disk

commit 9c2b9dbafc067e173db30c4fd0636392d27944e8
    block: remove alloc_disk and alloc_disk_node

commit a8698707a1835be3abd12a3b28079a80999f8dee
    block: move bd_mutex to struct gendisk

commit 2cece3778475abc855084d897a3cf61249798ad9
    scsi: scsi_ioctl: Remove scsi_req_init()

commit 2f4731dcd0bb73379fbb9e3eb07ae7324125caef
    block: remove bdput

commit 14cf1dbb55bb07427babee425fd2a8a9300737cc
    block: remove bdgrab

Signed-off-by: Krzysztof Majzerowicz-Jaszcz <krzysztof.majzerowicz-jaszcz@intel.com>
 2022-06-09 08:49:32 +02:00
Rafal Stefanowski
acec05060d Fix license 
Change license to BSD-3-Clause

Signed-off-by: Rafal Stefanowski <rafal.stefanowski@intel.com>
 2021-10-28 12:46:42 +02:00
Jan Musial
ac00bd503a Add config for BLK_MQ_F_BLOCKING flag 
Signed-off-by: Jan Musial <jan.musial@intel.com>
 2021-08-18 09:04:15 +02:00
Robert Baldyga
c968285d9f Remove upgrade-in-flight feature 
Due to changes in Linux kernel this feature is not working anymore.

Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2021-08-11 20:33:16 +02:00
Robert Baldyga
e5e0697da4 Add support for kernel 5.11 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2021-06-15 18:59:08 +02:00
Robert Baldyga
5e17d0833f Remove unused callbacks from cas_disk ops 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2021-06-15 18:59:08 +02:00
Robert Baldyga
b82b338c53 Remove blk request handling path 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2021-06-15 18:59:08 +02:00
Robert Baldyga
7343cb55fa Handle all io on bio handler 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2021-06-15 16:52:35 +02:00
Slawomir Jankowski
964877ddd6 Typo fix 
Signed-off-by: Slawomir Jankowski <slawomir.jankowski@intel.com>
 2021-05-13 17:02:05 +02:00
Slawomir Jankowski
9e7f163216 Cleanup exported object queue 
This patch fixes adding core after core addition failure.
The queue wasn't cleaned before and following core addition cannot
re-initialize queue properly.

Signed-off-by: Slawomir Jankowski <slawomir.jankowski@intel.com>
 2021-05-13 17:01:41 +02:00
Adam Rutkowski
9c08ed4b87 Set proper multiqueue flags 
Setting BLK_MQ_F_STACKING (to indicate stacked device) and
BLK_MQ_F_BLOCKING (to indicate potentially blocking operations
like acquiring mutex or GFP_NOIO allocations).

Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2021-04-16 22:52:18 -05:00
Rafal Stefanowski
43f43068ad Update copyright statements (2021) 
Signed-off-by: Rafal Stefanowski <rafal.stefanowski@intel.com>
 2021-01-21 13:15:38 +01:00
Robert Baldyga
7e40570bbd Remove #ifdef for unsupported kernel version 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2020-12-22 11:33:38 +01:00
Robert Baldyga
0596597f61 Replace ioctl_by_bdev() with vfs_ioctl() 
Since kernel 5.8 ioctl_by_bdev() is not available.

Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2020-12-22 11:33:38 +01:00
Robert Baldyga
c596c66063 configure: Add wrappers for default make request function 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2020-12-22 11:33:38 +01:00
Robert Baldyga
48c3598ef5 configure: Add bdev_disk_changed() wrapper 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2020-12-22 11:33:38 +01:00
Robert Baldyga
d9ea8d3e32 configure: Add blk_queue_make_request() wrapper 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2020-12-22 11:33:38 +01:00
Michal Mielewczyk
8363b67993 cas_disk: handle allocation error properly 
In case of error `blk_mq_init_queue()` does not return NULL, but
`ERR_PTR(error_code)` instead.

`IS_ERR_OR_NULL()` should be used to check if `blk_mq_init_queue()` actually
failed.

Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2020-07-07 07:43:52 -04:00
Rafal Stefanowski
44b4020cc1 Update copyright statements 
Signed-off-by: Rafal Stefanowski <rafal.stefanowski@intel.com>
 2020-05-04 16:47:38 +02:00
Adam Rutkowski
9b8fdde201 Relax allocations requirements 
CAS does not need atomic alocations virtually anywhere. GFP_NOIO
should be sufficient in IO path. When allocation buffers during
module initialization use GFP_KERNEL.

Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2019-10-23 16:04:27 -04:00
Robert Baldyga
19bc5da2cf Cleanup CAS_VERSION 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2019-09-19 12:43:34 +02:00
Michal Rakowski
f015dea539 cas_disk: Add mandatory blk_mq_ops filed required by some kernels 
Signed-off-by: Michal Rakowski <michal.rakowski@intel.com>
 2019-09-10 16:28:28 +02:00
Michal Rakowski
a904a5bf66 Return values of expected type by the block layer 
Signed-off-by: Michal Rakowski <michal.rakowski@intel.com>
 2019-09-09 14:00:44 +02:00
Michal Rakowski
95af3c6f9f Move to blk-mq block interface. 
Currently Open-CAS uses single queue block interface,
which is removed in kernel in version 5.0.
From this moment on Open-CAS supports only blk-mq,
and single queue is not supported any longer.

Signed-off-by: Michal Rakowski <michal.rakowski@intel.com>
 2019-08-26 12:23:21 +02:00
Michal Rakowski
583deef8f6 configure: adapt to kernel 5.1 
Signed-off-by: Michal Rakowski <michal.rakowski@intel.com>
 2019-08-26 11:52:39 +02:00
Michal Rakowski
eee7a0e220 Fix exported object cleanup in case of cache stop failure 
In case of error during cache stop exported object is not being restored after destroying.
This may result in bug in case of calling stop once more.
This commit fixes this issue - exported objects are restored.

Signed-off-by: Michal Rakowski <michal.rakowski@intel.com>
 2019-07-17 15:09:39 +02:00
Michal Rakowski
ee6cba515a Added create/activate/free all exported objects methods 
Signed-off-by: Michal Rakowski <michal.rakowski@intel.com>
 2019-07-17 09:43:43 +02:00
Michal Mielewczyk
1e5355eba1 Extending 'configure' script 
Functions and macros dependent on different kernel versions are now generated
before compilation basing on current kernel capabilities instead of hardcoding
them for specific kernels.

Signed-off-by: Michal Mielewczyk <michal.mielewczyk@intel.com>
 2019-05-30 06:29:07 -04:00
Adam Rutkowski
444feb840c Remove intermediate files from repo 
Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>
 2019-03-29 14:52:25 -04:00
Robert Baldyga
94e8ca09e0 Initial commit 
Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
 2019-03-29 08:45:50 +01:00