[PATCH v2 0/9] ext4: support adding multi-delalloc blocks

Zhang Yi
2024-04-10T03:50:50Z

From: Zhang Yi <yi.zhang@huawei.com>

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 2 patches fix an incorrect delalloc reserved blocks count
issue, 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.

Zhang Yi (9):
ext4: factor out a common helper to query extent map
ext4: check the extent status again before inserting delalloc block
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 | 63 ++++++----
fs/ext4/extents_status.h | 5 +-
fs/ext4/inode.c | 240 +++++++++++++++++++++++-------------
include/trace/events/ext4.h | 26 ++--
4 files changed, 213 insertions(+), 121 deletions(-)

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2.39.2