| From: |
| Hannes Reinecke <hare@suse.de> |
| To: |
| Jens Axboe <axboe@fb.com> |
| Subject: |
| [RFC PATCH 0/4] Low water mark disk events |
| Date: |
| Wed, 9 Mar 2016 14:16:28 +0100 |
| Message-ID: |
| <1457529392-53970-1-git-send-email-hare@suse.de> |
| 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> |
| Archive‑link: | |
Article |
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
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