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nfs: disable client side deduplication 

The NFS protocol doesn't support deduplication, so turn it off again.

Fixes: ce96e888fe ("Fix nfs4.2 return -EINVAL when do dedupe operation")
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
This commit is contained in:
Darrick J. Wong 2019-05-31 14:06:05 -07:00 committed by Trond Myklebust
parent 1a7441b282
commit 9026b3a973
1 changed files with 5 additions and 1 deletions
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6
fs/nfs/nfs4file.c
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@ -187,7 +187,11 @@ static loff_t nfs42_remap_file_range(struct file *src_file, loff_t src_off,
bool same_inode = false;
int ret;
if (remap_flags & ~(REMAP_FILE_DEDUP | REMAP_FILE_ADVISORY))
/* NFS does not support deduplication. */
if (remap_flags & REMAP_FILE_DEDUP)
return -EOPNOTSUPP;
if (remap_flags & ~REMAP_FILE_ADVISORY)
return -EINVAL;
/* check alignment w.r.t. clone_blksize */