From: Yu Kuai <yukuai3@xxxxxxxxxx>
Changes in v5:
- rebase on the top of md-6.17;
- fix compile problem if md-mod is build as module;
- fix two problems for lvm2 dm-raid tests, patch 5,13
- other cleanups;
Changes in v4:
- rebase on the top of other patchset;
Changes in v3:
- update commit message.
Changes in v2:
- don't export apis, and don't support build md-bitmap as module
Due to known performance issues with md-bitmap and the unreasonable
implementations like following:
- self-managed pages, bitmap_storage->filemap;
- self-managed IO submitting like filemap_write_page();
- global spin_lock
...
I have decided not to continue optimizing based on the current bitmap
implementation, and plan to invent a new lock-less bitmap. And a new
kconfig option is a good way for isolation.
However, we still encourage anyone who wants to continue optimizing the
current implementation
Yu Kuai (15):
md/raid1: change r1conf->r1bio_pool to a pointer type
md/raid1: remove struct pool_info and related code
md/md-bitmap: remove the parameter 'init' for bitmap_ops->resize()
md/md-bitmap: merge md_bitmap_group into bitmap_operations
md/md-bitmap: add a new parameter 'flush' to bitmap_ops->enabled
md/md-bitmap: add md_bitmap_registered/enabled() helper
md/md-bitmap: handle the case bitmap is not enabled before
start_sync()
md/md-bitmap: handle the case bitmap is not enabled before end_sync()
md/raid1: check bitmap before behind write
md/raid1: check before referencing mddev->bitmap_ops
md/raid10: check before referencing mddev->bitmap_ops
md/raid5: check before referencing mddev->bitmap_ops
md/dm-raid: check before referencing mddev->bitmap_ops
md: check before referencing mddev->bitmap_ops
md/md-bitmap: introduce CONFIG_MD_BITMAP
drivers/md/Kconfig | 18 +++++
drivers/md/Makefile | 3 +-
drivers/md/dm-raid.c | 18 +++--
drivers/md/md-bitmap.c | 74 +++++++++---------
drivers/md/md-bitmap.h | 62 ++++++++++++++-
drivers/md/md-cluster.c | 2 +-
drivers/md/md.c | 112 +++++++++++++++++++--------
drivers/md/md.h | 4 +-
drivers/md/raid1-10.c | 2 +-
drivers/md/raid1.c | 163 +++++++++++++++++++---------------------
drivers/md/raid1.h | 22 +-----
drivers/md/raid10.c | 49 ++++++------
drivers/md/raid5.c | 30 ++++----
13 files changed, 330 insertions(+), 229 deletions(-)
--
2.39.2
