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nfsd: update mtime on truncate 

This fixes a failure in xfstests generic/313 because nfs doesn't update
mtime on a truncate.  The protocol requires this to be done implicity
for a size changing setattr.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
Christoph Hellwig 2014-09-07 12:15:52 -07:00 committed by J. Bruce Fields
parent 027bc41a3e
commit f0c63124a6
1 changed files with 10 additions and 0 deletions
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10
fs/nfsd/vfs.c
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@ -445,6 +445,16 @@ nfsd_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp, struct iattr *iap,
if (err)
goto out;
size_change = 1;
/*
* RFC5661, Section 18.30.4:
* Changing the size of a file with SETATTR indirectly
* changes the time_modify and change attributes.
*
* (and similar for the older RFCs)
*/
if (iap->ia_size != i_size_read(inode))
iap->ia_valid |= ATTR_MTIME;
}
iap->ia_valid |= ATTR_CTIME;