cifs: fix that return -EINVAL when do dedupe operation

Nora714 · Steve French · commit b073a08016a1 · 2019-03-22T22:36:54.000-05:00
dedupe_file_range operations is combiled into remap_file_range. But it's always skipped for dedupe operations in function cifs_remap_file_range. Example to test: Before this patch: # dd if=/dev/zero of=cifs/file bs=1M count=1 # xfs_io -c "dedupe cifs/file 4k 64k 4k" cifs/file XFS_IOC_FILE_EXTENT_SAME: Invalid argument After this patch: # dd if=/dev/zero of=cifs/file bs=1M count=1 # xfs_io -c "dedupe cifs/file 4k 64k 4k" cifs/file XFS_IOC_FILE_EXTENT_SAME: Operation not supported Influence for xfstests: generic/091 generic/112 generic/127 generic/263 These tests report this error "do_copy_range:: Invalid argument" instead of "FIDEDUPERANGE: Invalid argument". Because there are still two bugs cause these test failed. https://bugzilla.kernel.org/show_bug.cgi?id=202935 https://bugzilla.kernel.org/show_bug.cgi?id=202785 Signed-off-by: Xiaoli Feng <fengxiaoli0714@gmail.com> Signed-off-by: Steve French <stfrench@microsoft.com>
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
@@ -1008,7 +1008,7 @@ static loff_t cifs_remap_file_range(struct file *src_file, loff_t off,
 	unsigned int xid;
 	int rc;
 
-	if (remap_flags & ~REMAP_FILE_ADVISORY)
+	if (remap_flags & ~(REMAP_FILE_DEDUP | REMAP_FILE_ADVISORY))
 		return -EINVAL;
 
 	cifs_dbg(FYI, "clone range\n");
