From: Hannes Reinecke <hare@suse.de>
To: Jens Axboe <axboe@fb.com>
Cc: Christoph Hellwig <hch@lst.de>,
"Martin K. Petersen" <martin.petersen@oracle.com>,
Jeff Mahoney <jeffm@suse.com>,
linux-block@vger.kernel.org, linux-scsi@vger.kernel.org,
linux-fsdevel@vger.kernel.org, Hannes Reinecke <hare@suse.de>
Subject: [RFC PATCH 0/4] Low water mark disk events
Date: Wed, 9 Mar 2016 14:16:28 +0100 [thread overview]
Message-ID: <1457529392-53970-1-git-send-email-hare@suse.de> (raw)
Hi all,
here is a patchset to implement 'low water mark' disk events.
This event corresponds to a TP Soft Threshold Reached UA for
SCSI or a 'low watermark' event for dm-thin.
It utilises the existing 'disk event' infrastructure from the
blocklayer to send out the events via udev.
And it also cleans up the ambiguous MEDIA_CHANGE event handling
from libata, where AN (asynchronous notification) events would
be signalled via SCSI events, and polled MEDIA_CHANGE events
would be signalled via disk events.
And I've added thin provisioning support to brd, too, to have
a simple testbed for the new low water mark disk event.
As usual, comments and reviews are welcome.
Hannes Reinecke (4):
scsi,block: enable disk event forwarding
block,scsi: Low water mark disk event
dm-thin: enable low water mark disk event
brd: thin provisioning support
block/genhd.c | 3 +++
drivers/block/brd.c | 53 ++++++++++++++++++++++++++++++++++++++++++++++
drivers/md/dm-thin.c | 2 ++
drivers/md/dm.c | 26 +++++++++++++++++++++++
drivers/md/dm.h | 3 ++-
drivers/scsi/scsi_lib.c | 25 +++++++++-------------
drivers/scsi/sd.c | 44 ++++++++++++++++++++++++++++++++++++++
drivers/scsi/sd.h | 1 +
include/linux/genhd.h | 1 +
include/scsi/scsi_driver.h | 2 ++
10 files changed, 144 insertions(+), 16 deletions(-)
--
1.8.5.6
next reply other threads:[~2016-03-09 13:16 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-09 13:16 Hannes Reinecke [this message]
2016-03-09 13:16 ` [PATCH 1/4] scsi,block: enable disk event forwarding Hannes Reinecke
2016-03-09 13:16 ` [PATCH 2/4] block,scsi: Low water mark disk event Hannes Reinecke
2016-03-09 13:16 ` [PATCH 3/4] dm-thin: enable low " Hannes Reinecke
2016-03-09 13:16 ` [PATCH 4/4] brd: thin provisioning support Hannes Reinecke
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