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I was hoping that I could get this queued for 6.13 via the block tree. Thanks, John Ps. I do appreciate that I am pinging on this quite early, but those patches mentioned have not changed since the last revision. > This series introduces atomic write support for software RAID 0/1/10. > > The main changes are to ensure that we can calculate the stacked device > request_queue limits appropriately for atomic writes. Fundamentally, if > some bottom does not support atomic writes, then atomic writes are not > supported for the top device. Furthermore, the atomic writes limits are > the lowest common supported limits from all bottom devices. > > Flag BLK_FEAT_ATOMIC_WRITES_STACKED is introduced to enable atomic writes > for stacked devices selectively. This ensures that we can analyze and test > atomic writes support per individual md/dm personality (prior to > enabling). > > Based on 0b4ace9da58d (for-6.13/block) nvme-multipath: don't bother > clearing max_hw_zone_append_sectors > > Differences to v3: > - Add RB tags from Christoph and Kuai (thanks!) > - Rebase > > Differences to v2: > - Refactor blk_stack_atomic_writes_limits() (Christoph) > - Relocate RAID 1/10 BB check (Kuai) > - Add RB tag from Christoph (Thanks!) > - Set REQ_ATOMIC for RAID 1/10 > > John Garry (5): > block: Add extra checks in blk_validate_atomic_write_limits() > block: Support atomic writes limits for stacked devices > md/raid0: Atomic write support > md/raid1: Atomic write support > md/raid10: Atomic write support > > block/blk-settings.c | 132 +++++++++++++++++++++++++++++++++++++++++ > drivers/md/raid0.c | 1 + > drivers/md/raid1.c | 14 ++++- > drivers/md/raid10.c | 14 ++++- > include/linux/blkdev.h | 4 ++ > 5 files changed, 161 insertions(+), 4 deletions(-) >