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| author | Mike Snitzer <[email protected]> | 2025-10-27 17:52:28 +0000 |
|---|---|---|
| committer | Anna Schumaker <[email protected]> | 2025-11-10 15:32:28 +0000 |
| commit | d32ddfeb559342e89a4d06b1df4e7e5e96df3762 (patch) | |
| tree | a1f979266c353804369af142b818445fe193c669 /net/unix/af_unix.c | |
| parent | nfs/localio: backfill missing partial read support for misaligned DIO (diff) | |
| download | kernel-d32ddfeb559342e89a4d06b1df4e7e5e96df3762.tar.gz kernel-d32ddfeb559342e89a4d06b1df4e7e5e96df3762.zip | |
nfs/localio: Ensure DIO WRITE's IO on stable storage upon completion
LOCALIO's misaligned DIO WRITE support requires synchronous IO for any
misaligned head and/or tail that are issued using buffered IO. In
addition, it is important that the O_DIRECT middle be on stable
storage upon its completion via AIO.
Otherwise, a misaligned DIO WRITE could mix buffered IO for the
head/tail and direct IO for the DIO-aligned middle -- which could lead
to problems associated with deferred writes to stable storage (such as
out of order partial completions causing incorrect advancement of the
file's offset, etc).
Fixes: c817248fc831 ("nfs/localio: add proper O_DIRECT support for READ and WRITE")
Signed-off-by: Mike Snitzer <[email protected]>
Signed-off-by: Anna Schumaker <[email protected]>
Diffstat (limited to 'net/unix/af_unix.c')
0 files changed, 0 insertions, 0 deletions