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Commit 9026b3a9 authored May 31, 2019 by Darrick J. Wong Committed by Trond Myklebust Jul 06, 2019

nfs: disable client side deduplication

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

Fixes: ce96e888 ("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>

parent 1a7441b2

fs/nfs/nfs4file.c

+5 −1

Original line number	Diff line number	Diff line
		@@ -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 */