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c470c1c9f6f75094e7679d8cbb65ad9ca1990d07
scoutfs/kmod/src
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Zach Brown c470c1c9f6 Allow read-mostly _alloc_meta_low 
Each transaction hold makes multiple calls to _alloc_meta_low to see if
the transaction should be committed to refill allocators before the
caller's hold is acquired and they can dirty blocks in the transaction.

_alloc_meta_low was using a spinlock to sample the allocator list_head
blocks to determine if there was space available.  The lock and unlock
stores were creating significant cacheline contention.

The _alloc_meta_low calls are higher frequency than allocations.  We can
use a seqlock to have exclusive writers and allow concurrent
_alloc_meta_low readers who retry if a writer intervenes.

Signed-off-by: Zach Brown <zab@versity.com>
2021-03-04 11:39:30 -08:00
..
alloc.c
Allow read-mostly _alloc_meta_low
2021-03-04 11:39:30 -08:00
alloc.h
Allow read-mostly _alloc_meta_low
2021-03-04 11:39:30 -08:00
avl.c
scoutfs: Ensure padding in structs remains zeroed
2020-10-29 14:15:33 -07:00
avl.h
scoutfs: add avl
2020-08-26 14:39:12 -07:00
block.c
scoutfs: Tidy some enum usage
2020-11-30 13:35:44 -08:00
block.h
scoutfs: Use separate block devices for metadata and data
2020-11-19 11:41:20 -08:00
btree.c
scoutfs: Tidy some enum usage
2020-11-30 13:35:44 -08:00
btree.h
scoutfs: use full extents for data and alloc
2020-10-26 15:19:03 -07:00
client.c
Use mounted_client item as sign of farewell
2021-02-22 13:28:38 -08:00
client.h
scoutfs: incremental srch compaction
2020-10-26 15:19:03 -07:00
cmp.h
scoutfs: use single small key struct
2018-04-04 09:15:27 -05:00
counters.c
scoutfs: add sysfs.c, fsid file
2017-12-20 12:21:13 -08:00
counters.h
Use quorum slots and background election work
2021-02-18 12:57:30 -08:00
data.c
Retry if transaction cannot alloc for fallocate or write
2021-01-25 09:32:01 -08:00
data.h
Add move_blocks ioctl
2021-01-14 13:42:22 -08:00
dir.c
Use d_materialise_unique to splice dir dentries
2021-01-26 14:46:07 -08:00
dir.h
scoutfs: remove name from dirent keys
2018-04-04 09:15:27 -05:00
endian_swap.h
scoutfs: add 64bit endian swapping helper
2017-11-21 13:11:43 -08:00
export.c
scoutfs: remove name from dirent keys
2018-04-04 09:15:27 -05:00
export.h
scoutfs: open by handle
2018-01-26 11:59:47 -08:00
ext.c
scoutfs: add extent layer
2020-10-26 15:19:03 -07:00
ext.h
scoutfs: add extent layer
2020-10-26 15:19:03 -07:00
file.c
scoutfs: remove lsm code
2020-01-17 11:21:36 -08:00
file.h
scoutfs: provide cluster safe ->llseek
2017-08-30 10:38:00 -07:00
forest.c
scoutfs: recover max lock write_version
2020-10-30 11:14:10 -07:00
forest.h
scoutfs: recover max lock write_version
2020-10-30 11:14:10 -07:00
format.h
Use mounted_client item as sign of farewell
2021-02-22 13:28:38 -08:00
hash.h
scoutfs: fix hash compiler warnings
2020-10-29 14:15:33 -07:00
inode.c
Remove item accounting
2021-01-20 17:01:08 -08:00
inode.h
Remove item accounting
2021-01-20 17:01:08 -08:00
ioctl.c
Remove item accounting
2021-01-20 17:01:08 -08:00
ioctl.h
Add move_blocks ioctl
2021-01-14 13:42:22 -08:00
item.c
Add some item cache page tracing
2021-01-26 14:46:07 -08:00
item.h
scoutfs: commit while enough meta for dirty items
2020-12-02 09:25:13 -08:00
Kconfig
Initial commit
2016-02-05 14:12:14 -08:00
kernelcompat.h
scoutfs: fix older kc readdir emit
2020-04-21 16:28:06 -07:00
key.h
scoutfs: Ensure padding in structs remains zeroed
2020-10-29 14:15:33 -07:00
lock_server.c
scoutfs: Tidy some enum usage
2020-11-30 13:35:44 -08:00
lock_server.h
scoutfs: recover max lock write_version
2020-10-30 11:14:10 -07:00
lock.c
Extend lock invalidate grace period
2021-01-26 14:46:07 -08:00
lock.h
scoutfs: Use enum for lock mode
2020-11-30 13:35:44 -08:00
Makefile
Filesystem version instead of format hash check
2021-01-15 10:53:00 -08:00
Makefile.kernelcompat
scoutfs: support newer ->iterate readdir
2020-01-15 14:57:57 -08:00
msg.c
scoutfs: use rid in console messages
2019-08-20 15:52:13 -07:00
msg.h
scoutfs: check for newlines in msg.h wrappers
2019-04-12 10:54:07 -07:00
net.c
scoutfs: Tidy some enum usage
2020-11-30 13:35:44 -08:00
net.h
scoutfs: Tidy some enum usage
2020-11-30 13:35:44 -08:00
options.c
Use quorum slots and background election work
2021-02-18 12:57:30 -08:00
options.h
Use quorum slots and background election work
2021-02-18 12:57:30 -08:00
per_task.c
scoutfs: expand the per_task API
2019-05-21 11:33:26 -07:00
per_task.h
scoutfs: expand the per_task API
2019-05-21 11:33:26 -07:00
quorum.c
Return error from _quorum_setup
2021-02-22 13:28:38 -08:00
quorum.h
Use quorum slots and background election work
2021-02-18 12:57:30 -08:00
scoutfs_trace.c
Remove dead btree, block, and buddy code
2017-04-18 13:44:55 -07:00
scoutfs_trace.h
Use atomic holders instead of trans info lock
2021-03-01 14:18:04 -08:00
server.c
Use spinlock to protect server farewell list
2021-02-22 13:28:38 -08:00
server.h
Use quorum slots and background election work
2021-02-18 12:57:30 -08:00
sort_priv.c
scoutfs: bring back sort_priv
2020-10-29 14:15:33 -07:00
sort_priv.h
scoutfs: bring back sort_priv
2020-10-29 14:15:33 -07:00
spbm.c
scoutfs: Tidy some enum usage
2020-11-30 13:35:44 -08:00
spbm.h
scoutfs: add scoutfs_spbm_empty()
2019-04-12 10:54:07 -07:00
srch.c
Fix spurious EIO from scoutfs_srch_get_compact
2021-01-26 14:46:07 -08:00
srch.h
scoutfs: incremental srch compaction
2020-10-26 15:19:03 -07:00
super.c
Use quorum slots and background election work
2021-02-18 12:57:30 -08:00
super.h
scoutfs: convert endian in SCOUTFS_IS_META_BDEV
2020-11-24 14:02:02 -08:00
sysfs.c
scoutfs: add rid sysfs file
2019-08-20 15:52:13 -07:00
sysfs.h
scoutfs: add mount_options/ sysfs dir
2019-06-05 14:30:11 -07:00
trans.c
Use atomic holders instead of trans info lock
2021-03-01 14:18:04 -08:00
trans.h
Remove item accounting
2021-01-20 17:01:08 -08:00
triggers.c
scoutfs: add trigger for advancing btree ring
2018-04-13 08:59:03 -07:00
triggers.h
scoutfs: Tidy some enum usage
2020-11-30 13:35:44 -08:00
tseq.c
scoutfs: add trivial seq file wrapper
2018-07-27 09:50:21 -07:00
tseq.h
scoutfs: add trivial seq file wrapper
2018-07-27 09:50:21 -07:00
util.h
Add util.h for kernel helpers
2021-01-14 13:42:22 -08:00
xattr.c
Remove item accounting
2021-01-20 17:01:08 -08:00
xattr.h
scoutfs: search_xattrs name requires srch tag
2020-12-03 09:58:35 -08:00