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| author | J. Bruce Fields <bfields@redhat.com> | 2018-01-16 10:08:00 -0500 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@primarydata.com> | 2018-01-16 10:13:23 -0500 |
| commit | 1b8d97b0a837beaf48a8449955b52c650a7114b4 (patch) | |
| tree | e76a94b4ba58ce967fb1edb1763e7ee4ca18f434 /fs/nfs/direct.c | |
| parent | f96adf1ea08a37e3739b1f929ce8318eee63b1f4 (diff) | |
| download | linux-0-day-1b8d97b0a837beaf48a8449955b52c650a7114b4.tar.gz linux-0-day-1b8d97b0a837beaf48a8449955b52c650a7114b4.tar.xz | |
NFS: commit direct writes even if they fail partially
If some of the WRITE calls making up an O_DIRECT write syscall fail,
we neglect to commit, even if some of the WRITEs succeed.
We also depend on the commit code to free the reference count on the
nfs_page taken in the "if (request_commit)" case at the end of
nfs_direct_write_completion(). The problem was originally noticed
because ENOSPC's encountered partway through a write would result in a
closed file being sillyrenamed when it should have been unlinked.
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs/nfs/direct.c')
| -rw-r--r-- | fs/nfs/direct.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c index d2972d5374695..8c10b0562e75d 100644 --- a/fs/nfs/direct.c +++ b/fs/nfs/direct.c @@ -775,10 +775,8 @@ static void nfs_direct_write_completion(struct nfs_pgio_header *hdr) spin_lock(&dreq->lock); - if (test_bit(NFS_IOHDR_ERROR, &hdr->flags)) { - dreq->flags = 0; + if (test_bit(NFS_IOHDR_ERROR, &hdr->flags)) dreq->error = hdr->error; - } if (dreq->error == 0) { nfs_direct_good_bytes(dreq, hdr); if (nfs_write_need_commit(hdr)) { |