Hi, This patch series is version 9 of the patch series to introduce block-level provisioning mechanism (original [1]), which is useful for provisioning space across thinly provisioned storage architectures (loop devices backed by sparse files, dm-thin devices, virtio-blk). This series has minimal changes over v8[2], with a couple of patches dropped (suggested by Dave). This patch series is rebased from the linux-dm/dm-6.5-provision-support [3] on to (a12deb44f973 Merge tag 'input-for-v6.7-rc0' ...). The final patch in the series is a blktest (suggested by Dave in 4) which was used to test out the provisioning flow for loop devices on sparse files on an ext4 filesystem. [1] Original: https://lore.kernel.org/lkml/20220915164826.1396245-1-sarthakkukreti@xxxxxxxxxx/ [2] v8 (last series): https://lore.kernel.org/lkml/20231007012817.3052558-1-sarthakkukreti@xxxxxxxxxxxx/ [3] linux-dm/dm-6.5-provision-suppport tree: https://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm.git/log/?h=dm-6.5-provision-support (with the last two WIP patches for dm-thinpool dropped as per discussion with maintainers). [4] https://lore.kernel.org/lkml/ZSXono3GkXhgrZ1T@xxxxxxxxxxxxxxxxxxx/ Changes from v8: - Dropped fallocate() bugfix: merged separately. - Dropped patch for unshare intent (suggested by Dave). - More comments in loop device patch to point out the implementation constraint and how it affects filesystems with copy-on-write semantics. - Added blktest "loop/010" (rebased on top of ) for testing. Sarthak Kukreti (4): block: Introduce provisioning primitives dm: Add block provisioning support loop: Add support for provision requests loop/010: Add test for mode 0 fallocate on loop devices block/blk-core.c | 5 ++++ block/blk-lib.c | 51 +++++++++++++++++++++++++++++++++++ block/blk-merge.c | 18 +++++++++++++ block/blk-settings.c | 19 +++++++++++++ block/blk-sysfs.c | 9 +++++++ block/bounce.c | 1 + block/fops.c | 5 ++++ drivers/block/loop.c | 39 ++++++++++++++++++++++++--- drivers/md/dm-crypt.c | 4 ++- drivers/md/dm-linear.c | 1 + drivers/md/dm-table.c | 23 ++++++++++++++++ drivers/md/dm.c | 7 +++++ include/linux/bio.h | 6 +++-- include/linux/blk_types.h | 5 +++- include/linux/blkdev.h | 16 +++++++++++ include/linux/device-mapper.h | 17 ++++++++++++ 16 files changed, 219 insertions(+), 7 deletions(-) -- 2.39.2
