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NFSv4.2: error out when relink swapfile 

This fixes xfstests generic/356 failure on NFSv4.2.

Signed-off-by: Murphy Zhou <jencce.kernel@gmail.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
This commit is contained in:
Murphy Zhou 2020-02-14 22:34:09 +08:00 committed by Trond Myklebust
parent eb095c1403
commit f5fdf1243f
1 changed files with 3 additions and 0 deletions
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3
fs/nfs/nfs4file.c
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@ -252,6 +252,9 @@ static loff_t nfs42_remap_file_range(struct file *src_file, loff_t src_off,
if (remap_flags & ~REMAP_FILE_ADVISORY)
return -EINVAL;
if (IS_SWAPFILE(dst_inode) || IS_SWAPFILE(src_inode))
return -ETXTBSY;
/* check alignment w.r.t. clone_blksize */
ret = -EINVAL;
if (bs) {