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| author |   Darrick J. Wong <darrick.wong@oracle.com> | 2019-05-31 14:06:05 -0700 |
|---|---|---|
| committer |   Trond Myklebust <trond.myklebust@hammerspace.com> | 2019-07-06 14:54:53 -0400 |
| commit | 9026b3a973b0b0b73c15ba40aff87cd0959fd0f3 (patch) | |
| tree | 39b93060f7cf037a34b158ab3f2ac21be46866ba /fs/nfs/nfs4file.c | |
| parent | NFSv4: Add lease_time and lease_expired to 'nfs4:' line of mountstats (diff) | |
| download | linux-dev-9026b3a973b0b0b73c15ba40aff87cd0959fd0f3.tar.xz linux-dev-9026b3a973b0b0b73c15ba40aff87cd0959fd0f3.zip | |
nfs: disable client side deduplication
The NFS protocol doesn't support deduplication, so turn it off again.
Fixes: ce96e888fe48e ("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>
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 */ |