Backport performance changes from Ubuntu HWE 6.17 - #195

Merged

hbirth merged 28 commits into

DDNStorage:redfs-rhel10_0from

hbirth:redfs-rhel10_0

Aug 15, 2026

Commits on Aug 13, 2026

fuse: retry the read in fuse_write_begin() on DLM contention
hbirth
committed
bbeb7f5
fuse: use -EDEADLK for DLM lock error instead of -EAGAIN

bsbernd
authored and
hbirth
committed
5890520
fuse: drop BDI_CAP_STRICTLIMIT from fuse bdi setup
hbirth
committed
affca44
fuse: switch to direct IO on an inode-invalidation notify storm
hbirth
committed
00d60f0
fuse: use default writeback accounting

joannekoong
authored and
hbirth
committed
d33312f
fuse: allow parallel direct writes past EOF

bsbernd
authored and
hbirth
committed
fcacbc8
fuse: balance uncached_io accounting under forced-DIO latch
hbirth
committed
0f696e4
fuse: don't hold i_rwsem exclusively when doing buffered write
hbirth
committed
3488a13
fuse: acquire dlm lock for the normal buffer read

hazhou-ddn
authored and
hbirth
committed
385d3ee
fuse: fence cached reads against NOTIFY invalidate with a percpu gate
hbirth
committed
4225b31
fuse: satisfy DLM read lock requests from a held write lock
hbirth
committed
7896594
fuse: zero-fill writes past the server EOF instead of sending READs
hbirth
committed
f2ba2c6
fuse: only refresh size on cached write when opened with O_APPEND

hazhou-ddn
authored and
hbirth
committed
5ce4f97
fuse: seed DLM grant merging with an interval-tree lookup
hbirth
committed
0f7f419
fuse: re-validate the DLM grant after waiting on the coherency gate
hbirth
committed
c48c1d1
fuse: fix the DLM revoke range of an inode invalidate
hbirth
committed
42a13e9
fuse: fence mmapped invalidates and local truncates with the coherency gate
hbirth
committed
953ed78
fuse: order grant recording against concurrent revokes
hbirth
committed
669269e
fuse: complete pinned-header sends in ring task context
hbirth
committed
205e1d7
fuse: retry grant recording until it wins against revokes
hbirth
committed
19c898c
fuse: gate the notify-driven direct-IO latch behind a module parameter
hbirth
committed
3aa1aad
fuse: re-decide the write lock mode after the DLM probe

Allison Henderson
authored and
hbirth
committed
0a69923
fuse: mark writeback-initiated SETATTR with FATTR_WRITEBACK
hbirth
committed
b510e66
fuse: disable local attribute cache override under DLM

hazhou-ddn
authored and
hbirth
committed
eb0d730

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Backport performance changes from Ubuntu HWE 6.17 - #195

Backport performance changes from Ubuntu HWE 6.17#195
hbirth merged 28 commits into
DDNStorage:redfs-rhel10_0from
hbirth:redfs-rhel10_0

Commits on Aug 13, 2026

fuse: retry the read in fuse_write_begin() on DLM contention

fuse: use -EDEADLK for DLM lock error instead of -EAGAIN

fuse: drop BDI_CAP_STRICTLIMIT from fuse bdi setup

fuse: switch to direct IO on an inode-invalidation notify storm

fuse: use default writeback accounting

fuse: allow parallel direct writes past EOF

fuse: balance uncached_io accounting under forced-DIO latch

fuse: don't hold i_rwsem exclusively when doing buffered write

fuse: acquire dlm lock for the normal buffer read

fuse: fence cached reads against NOTIFY invalidate with a percpu gate

fuse: satisfy DLM read lock requests from a held write lock

fuse: zero-fill writes past the server EOF instead of sending READs

fuse: only refresh size on cached write when opened with O_APPEND

fuse: seed DLM grant merging with an interval-tree lookup

fuse: re-validate the DLM grant after waiting on the coherency gate

fuse: fix the DLM revoke range of an inode invalidate

fuse: fence mmapped invalidates and local truncates with the coherency gate

fuse: order grant recording against concurrent revokes

fuse: complete pinned-header sends in ring task context

fuse: retry grant recording until it wins against revokes

fuse: gate the notify-driven direct-IO latch behind a module parameter

fuse: re-decide the write lock mode after the DLM probe

fuse: mark writeback-initiated SETATTR with FATTR_WRITEBACK

fuse: disable local attribute cache override under DLM

Commits on Aug 14, 2026

fuse: don't launder from a NOTIFY invalidate while writepages are frozen

fuse: do not kill suid from inside the coherency gate

fuse: keep cached size and times under a DLM write grant

fuse: take i_rwsem exclusive when a write drops suid/sgid