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Subject[PATCH v3 00/10] ext4: support adding multi-delalloc blocks
Date
From: Zhang Yi <yi.zhang@huawei.com>

Changes since v2:
- Improve the commit message in patch 2,4,6 as Ritesh and Jan
suggested, makes the changes more clear.
- Add patch 3, add a warning if the delalloc counters are still not
zero on inactive.
- In patch 6, add a WARN in ext4_es_insert_delayed_extent(), strictly
requires the end_allocated parameter to be set to false if the
inserting extent belongs to one cluster.
- In patch 9, modify the reserve blocks math formula as Jan suggested,
prevent the count going to be negative.
- In patch 10, update the stale ext4_da_map_blocks() function comments.

Hello!

This patch series is the part 2 prepartory changes of the buffered IO
iomap conversion, I picked them out from my buffered IO iomap conversion
RFC series v3[1], add a fix for an issue found in current ext4 code, and
also add bigalloc feature support. Please look the following patches for
details.

The first 3 patches fix an incorrect delalloc reserved blocks count
issue and add a warning to make it easy to detect, the second 6 patches
make ext4_insert_delayed_block() call path support inserting
multi-delalloc blocks once a time, and the last patch makes
ext4_da_map_blocks() buffer_head unaware, prepared for iomap.

This patch set has been passed 'kvm-xfstests -g auto' tests, I hope it
could be reviewed and merged first.

[1] https://lore.kernel.org/linux-ext4/20240127015825.1608160-1-yi.zhang@huaweicloud.com/

Thanks,
Yi.

---
v2: https://lore.kernel.org/linux-ext4/20240410034203.2188357-1-yi.zhang@huaweicloud.com/

Zhang Yi (10):
ext4: factor out a common helper to query extent map
ext4: check the extent status again before inserting delalloc block
ext4: warn if delalloc counters are not zero on inactive
ext4: trim delalloc extent
ext4: drop iblock parameter
ext4: make ext4_es_insert_delayed_block() insert multi-blocks
ext4: make ext4_da_reserve_space() reserve multi-clusters
ext4: factor out check for whether a cluster is allocated
ext4: make ext4_insert_delayed_block() insert multi-blocks
ext4: make ext4_da_map_blocks() buffer_head unaware

fs/ext4/extents_status.c | 70 +++++++---
fs/ext4/extents_status.h | 5 +-
fs/ext4/inode.c | 248 +++++++++++++++++++++++-------------
fs/ext4/super.c | 6 +-
include/trace/events/ext4.h | 26 ++--
5 files changed, 231 insertions(+), 124 deletions(-)

--
2.39.2


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