diff options
Diffstat (limited to 'fs/nfs/nfs4file.c')
| -rw-r--r-- | fs/nfs/nfs4file.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/fs/nfs/nfs4file.c b/fs/nfs/nfs4file.c index 3a507c42c1ca..52dbd17e401e 100644 --- a/fs/nfs/nfs4file.c +++ b/fs/nfs/nfs4file.c @@ -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 */ |