NFS/localio: Handle short writes by retrying

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[ Upstream commit 615762059d ]

The current code for handling short writes in localio just truncates the
I/O and then sets an error. While that is close to how the ordinary NFS
code behaves, it does mean there is a chance the data that got written
is lost because it isn't persisted.
To fix this, change localio so that the upper layers can direct the
behaviour to persist any unstable data by rewriting it, and then
continuing writing until an ENOSPC is hit.

Fixes: 70ba381e1a ("nfs: add LOCALIO support")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Reviewed-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Anna Schumaker <anna.schumaker@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Trond Myklebust 2026-01-03 12:14:59 -05:00 • committed by Greg Kroah-Hartman

parent ec121ad626

commit c627769730

1 changed files with 47 additions and 17 deletions

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fs/nfs/localio.c

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