Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 5.2 010/124] nfs: disable client side deduplication | Date | Fri, 20 Sep 2019 00:01:38 +0200 |
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From: Darrick J. Wong <darrick.wong@oracle.com>
commit 9026b3a973b0b0b73c15ba40aff87cd0959fd0f3 upstream.
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> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- fs/nfs/nfs4file.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
--- a/fs/nfs/nfs4file.c +++ b/fs/nfs/nfs4file.c @@ -187,7 +187,11 @@ static loff_t nfs42_remap_file_range(str 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 */
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