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authorChristoph Hellwig <hch@lst.de>2014-09-07 12:15:52 -0700
committerJ. Bruce Fields <bfields@redhat.com>2014-09-11 11:12:16 -0400
commitf0c63124a6165792f6e37e4b5983792d009e1ce8 (patch)
treea7f1bba20c1706707da46372d88c244221e225e3 /fs/nfsd/vfs.c
parent027bc41a3eb4759d60641c033c9a4c85be1cfd39 (diff)
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>
Diffstat (limited to 'fs/nfsd/vfs.c')
-rw-r--r--fs/nfsd/vfs.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 89d1ae3bcff7..965cffd17a0c 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -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;