Use kernel workqueue and kernel workqueue based new btrfs_workqueue_struct to replace
the old btrfs_workers.
The main goal is to reduce the redundant codes(800 lines vs 200 lines) and
try to get benefits from the latest workqueue changes.
About the performance, the test suite I used is bonnie++,
and there seems no significant regression.
The patched kernel get the following difference vs the 3.10 kernel on an HDD
with a two-way 4cores server.(10times each and compare the average)
putc: -0.97%
getc: +1.48%
random_del: +2.38%
random_create: -2.27%
seq_del +0.94%
Other changes are smaller than 0.5% and can be ignored.
Since the tests are not enough and maybe unstable,
any further tests are welcome.
------
Changelog:
v1->v2: In patch 2/9
Add "ret=-ENOMEM" for some workqueue allocation in scrub.c.
Add qgroup_rescan_workers allocation check.
------
Qu Wenruo (9):
btrfs: Cleanup the unused struct async_sched.
btrfs: use kernel workqueue to replace the btrfs_workers functions
btrfs: Added btrfs_workqueue_struct implemented ordered execution
based on kernel workqueue
btrfs: Add high priority workqueue support for btrfs_workqueue_struct
btrfs: Use btrfs_workqueue_struct to replace the fs_info->workers
btrfs: Use btrfs_workqueue_struct to replace the
fs_info->delalloc_workers
btrfs: Replace the fs_info->submit_workers with kernel workqueue.
btrfs: Cleanup the old btrfs workqueue
btrfs: Replace thread_pool_size with workqueue default value
fs/btrfs/Makefile | 5 +-
fs/btrfs/async-thread.c | 714 -----------------------------------------------
fs/btrfs/async-thread.h | 119 --------
fs/btrfs/bwq.c | 136 +++++++++
fs/btrfs/bwq.h | 67 +++++
fs/btrfs/ctree.h | 46 ++-
fs/btrfs/delayed-inode.c | 9 +-
fs/btrfs/dev-replace.c | 1 -
fs/btrfs/disk-io.c | 238 ++++++----------
fs/btrfs/extent-tree.c | 6 +-
fs/btrfs/inode.c | 57 ++--
fs/btrfs/ordered-data.c | 11 +-
fs/btrfs/ordered-data.h | 4 +-
fs/btrfs/qgroup.c | 16 +-
fs/btrfs/raid56.c | 38 ++-
fs/btrfs/reada.c | 8 +-
fs/btrfs/relocation.c | 1 -
fs/btrfs/scrub.c | 78 +++---
fs/btrfs/super.c | 41 ++-
fs/btrfs/volumes.c | 25 +-
fs/btrfs/volumes.h | 3 +-
21 files changed, 451 insertions(+), 1172 deletions(-)
delete mode 100644 fs/btrfs/async-thread.c
delete mode 100644 fs/btrfs/async-thread.h
create mode 100644 fs/btrfs/bwq.c
create mode 100644 fs/btrfs/bwq.h
--
1.8.4
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