ext4: support adding multi-delalloc blocks [LWN.net]

From:		Zhang Yi <yi.zhang-AT-huaweicloud.com>
To:		linux-ext4-AT-vger.kernel.org
Subject:		[PATCH v2 0/9] ext4: support adding multi-delalloc blocks
Date:		Wed, 10 Apr 2024 11:41:54 +0800
Message-ID:		<20240410034203.2188357-1-yi.zhang@huaweicloud.com>
Cc:		linux-fsdevel-AT-vger.kernel.org, tytso-AT-mit.edu, adilger.kernel-AT-dilger.ca, jack-AT-suse.cz, yi.zhang-AT-huawei.com, yi.zhang-AT-huaweicloud.com, chengzhihao1-AT-huawei.com, yukuai3-AT-huawei.com
Archive-link:		Article

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...

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(-)

-- 
2.39.2