linux-stable.git/drivers/block, branch v4.5.2

rbd: use GFP_NOIO consistently for request allocations

2016-04-20T06:45:21+00:00

commit 2224d879c7c0f85c14183ef82eb48bd875ceb599 upstream.

As of 5a60e87603c4c533492c515b7f62578189b03c9c, RBD object request
allocations are made via rbd_obj_request_create() with GFP_NOIO.
However, subsequent OSD request allocations in rbd_osd_req_create*()
use GFP_ATOMIC.

With heavy page cache usage (e.g. OSDs running on same host as krbd
client), rbd_osd_req_create() order-1 GFP_ATOMIC allocations have been
observed to fail, where direct reclaim would have allowed GFP_NOIO
allocations to succeed.

Suggested-by: Vlastimil Babka 
Suggested-by: Neil Brown 
Signed-off-by: David Disseldorp 
Signed-off-by: Ilya Dryomov 
Signed-off-by: Greg Kroah-Hartman

brd: Fix discard request processing

2016-04-12T14:33:34+00:00

commit 5e4298be45e83ecdffaabb370eea9396889b07f1 upstream.

Avoid that discard requests with size => PAGE_SIZE fail with
-EIO. Refuse discard requests if the discard size is not a
multiple of the page size.

Fixes: 2dbe54957636 ("brd: Refuse improperly aligned discard requests")
Signed-off-by: Bart Van Assche 
Reviewed-by: Jan Kara 
Cc: Christoph Hellwig 
Cc: Robert Elliot 
Signed-off-by: Jens Axboe 
Signed-off-by: Greg Kroah-Hartman

mtip32xx: Cleanup queued requests after surprise removal

2016-04-12T14:33:31+00:00

commit 008e56d200225321371748d95908e6222436f06d upstream.

Fail all pending requests after surprise removal of a drive.

Signed-off-by: Vignesh Gunasekaran 
Signed-off-by: Selvan Mani 
Signed-off-by: Asai Thambi S P 
Signed-off-by: Jens Axboe 
Signed-off-by: Greg Kroah-Hartman

mtip32xx: Implement timeout handler

2016-04-12T14:33:31+00:00

commit abb0ccd185c9e31847709b86192e6c815d1f57ad upstream.

Added timeout handler. Replaced blk_mq_end_request() with
blk_mq_complete_request() to avoid double completion of a request.

Signed-off-by: Selvan Mani 
Signed-off-by: Rajesh Kumar Sambandam 
Signed-off-by: Asai Thambi S P 
Signed-off-by: Jens Axboe 
Signed-off-by: Greg Kroah-Hartman

mtip32xx: Handle FTL rebuild failure state during device initialization

2016-04-12T14:33:31+00:00

commit aae4a033868c496adae86fc6f9c3e0c405bbf360 upstream.

Allow device initialization to finish gracefully when it is in
FTL rebuild failure state. Also, recover device out of this state
after successfully secure erasing it.

Signed-off-by: Selvan Mani 
Signed-off-by: Vignesh Gunasekaran 
Signed-off-by: Asai Thambi S P 
Signed-off-by: Jens Axboe 
Signed-off-by: Greg Kroah-Hartman

mtip32xx: Handle safe removal during IO

2016-04-12T14:33:31+00:00

commit 51c6570eb922146470c2fe660c34585414679bd6 upstream.

Flush inflight IOs using fsync_bdev() when the device is safely
removed. Also, block further IOs in device open function.

Signed-off-by: Selvan Mani 
Signed-off-by: Rajesh Kumar Sambandam 
Signed-off-by: Asai Thambi S P 
Signed-off-by: Jens Axboe 
Signed-off-by: Greg Kroah-Hartman

mtip32xx: Fix for rmmod crash when drive is in FTL rebuild

2016-04-12T14:33:30+00:00

commit 59cf70e236c96594d9f1e065755d8fce9df5356b upstream.

When FTL rebuild is in progress, alloc_disk() initializes the disk
but device node will be created by add_disk() only after successful
completion of FTL rebuild. So, skip deletion of device node in
removal path when FTL rebuild is in progress.

Signed-off-by: Selvan Mani 
Signed-off-by: Asai Thambi S P 
Signed-off-by: Jens Axboe 
Signed-off-by: Greg Kroah-Hartman

mtip32xx: Print exact time when an internal command is interrupted

2016-04-12T14:33:30+00:00

commit 5b7e0a8ac85e2dfd83830dc9e0b3554d153a37e3 upstream.

Print exact time when an internal command is interrupted.

Signed-off-by: Selvan Mani 
Signed-off-by: Rajesh Kumar Sambandam 
Signed-off-by: Asai Thambi S P 
Signed-off-by: Jens Axboe 
Signed-off-by: Greg Kroah-Hartman

mtip32xx: Remove unwanted code from taskfile error handler

2016-04-12T14:33:30+00:00

commit e35b94738a2f7caa12017f69ef385cb6b8028965 upstream.

Remove setting and clearing MTIP_PF_EH_ACTIVE_BIT flag in
mtip_handle_tfe() as they are redundant. Also avoid waking
up service thread from mtip_handle_tfe() because it is
already woken up in case of taskfile error.

Signed-off-by: Selvan Mani 
Signed-off-by: Rajesh Kumar Sambandam 
Signed-off-by: Asai Thambi S P 
Signed-off-by: Jens Axboe 
Signed-off-by: Greg Kroah-Hartman

mtip32xx: Fix broken service thread handling

2016-04-12T14:33:30+00:00

commit cfc05bd31384c4898bf2437a4de5557f3cf9803a upstream.

Service thread does not detect the need for taskfile error hanlding. Fixed the
flag condition to process taskfile error.

Signed-off-by: Selvan Mani 
Signed-off-by: Asai Thambi S P 
Signed-off-by: Jens Axboe 
Signed-off-by: Greg Kroah-Hartman