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| author | Li Chen <me@linux.beauty> | 2026-06-30 17:23:27 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2026-08-03 23:08:17 -0400 |
| commit | 42c5c8634aae258eb1a1cce8429de581d7046079 (patch) | |
| tree | dcbdbf34487cd329adf778215f371059203c2854 /scripts/Makefile.thinlto | |
| parent | 1d04623fb8d96fa0c2539239faf9c394d8cdf7c0 (diff) | |
| download | linux-next-42c5c8634aae258eb1a1cce8429de581d7046079.tar.gz linux-next-42c5c8634aae258eb1a1cce8429de581d7046079.zip | |
nvdimm: pmem: keep PREFLUSH before data writes
pmem_submit_bio() records a REQ_PREFLUSH error, but continues to copy the
bio data and can later overwrite the error with a successful REQ_FUA flush.
That lets data writes run after a failed preflush and can complete the bio
successfully despite the failed ordering barrier.
Run the REQ_PREFLUSH flush synchronously before touching the bio data and
complete the bio with the flush error if it fails. Keep asynchronous flush
chaining for REQ_FUA. At that point, data copy has completed and the parent
bio can wait for the chained flush bio.
Signed-off-by: Li Chen <me@linux.beauty>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Message-ID: <20260630092338.2094628-3-me@linux.beauty>
Diffstat (limited to 'scripts/Makefile.thinlto')
0 files changed, 0 insertions, 0 deletions