| From: |
| Sarthak Kukreti <sarthakkukreti-AT-chromium.org> |
| To: |
| dm-devel-AT-redhat.com, linux-block-AT-vger.kernel.org, linux-ext4-AT-vger.kernel.org, linux-kernel-AT-vger.kernel.org, linux-fsdevel-AT-vger.kernel.org |
| Subject: |
| [PATCH v4 0/4] Introduce provisioning primitives for thinly provisioned storage |
| Date: |
| Tue, 18 Apr 2023 15:12:03 -0700 |
| Message-ID: |
| <20230418221207.244685-1-sarthakkukreti@chromium.org> |
| Cc: |
| Jens Axboe <axboe-AT-kernel.dk>, "Michael S. Tsirkin" <mst-AT-redhat.com>, Jason Wang <jasowang-AT-redhat.com>, Stefan Hajnoczi <stefanha-AT-redhat.com>, Alasdair Kergon <agk-AT-redhat.com>, Mike Snitzer <snitzer-AT-kernel.org>, Christoph Hellwig <hch-AT-infradead.org>, Brian Foster <bfoster-AT-redhat.com>, Theodore Ts'o <tytso-AT-mit.edu>, Andreas Dilger <adilger.kernel-AT-dilger.ca>, Bart Van Assche <bvanassche-AT-google.com>, Daniil Lunev <dlunev-AT-google.com>, "Darrick J. Wong" <djwong-AT-kernel.org> |
| Archive-link: |
| Article |
Hi,
This patch series is revision 4 of introducing a new mechanism to pass through provision requests on stacked thinly provisioned storage devices. See [1] for original cover letter.
[1] https://lore.kernel.org/lkml/ZDnMl8A1B1+Tfn5S@redhat.com/...
Changelog:
V4:
- Fix UNSHARE and KEEP_SIZE handling in blkdev_fallocate.
- Split dm-thin support into a separate patch.
- Remove ranged provision request handling and adjust io hints to handle provisioning one block at a time.
- Add missing provision_supported for dm targets.
V3:
- Drop FALLOC_FL_PROVISION and use mode == 0 for provision requests.
- Drop fs-specific patches; will be sent out in a follow up series.
- Fix missing shared block handling for thin snapshots.
V2:
- Fix stacked limit handling.
- Enable provision request handling in dm-snapshot
- Don't call truncate_bdev_range if blkdev_fallocate() is called with
FALLOC_FL_PROVISION.
- Clarify semantics of FALLOC_FL_PROVISION and why it needs to be a separate flag
(as opposed to overloading mode == 0).
Sarthak Kukreti (4):
block: Introduce provisioning primitives
dm: Add block provisioning support
dm-thin: Add REQ_OP_PROVISION support
loop: Add support for provision requests
block/blk-core.c | 5 +++
block/blk-lib.c | 53 +++++++++++++++++++++++++
block/blk-merge.c | 18 +++++++++
block/blk-settings.c | 19 +++++++++
block/blk-sysfs.c | 8 ++++
block/bounce.c | 1 +
block/fops.c | 25 +++++++++---
drivers/block/loop.c | 42 ++++++++++++++++++++
drivers/md/dm-crypt.c | 5 ++-
drivers/md/dm-linear.c | 2 +
drivers/md/dm-snap.c | 8 ++++
drivers/md/dm-table.c | 23 +++++++++++
drivers/md/dm-thin.c | 73 ++++++++++++++++++++++++++++++++---
drivers/md/dm.c | 6 +++
include/linux/bio.h | 6 ++-
include/linux/blk_types.h | 5 ++-
include/linux/blkdev.h | 16 ++++++++
include/linux/device-mapper.h | 17 ++++++++
18 files changed, 317 insertions(+), 15 deletions(-)
--
2.40.0.634.g4ca3ef3211-goog
