ceph: add F_SYNC file flag to force sync (non-O_DIRECT) io

This allows us to force IO through the sync path which you normally only get when multiple clients are reading/writing to the same file or by mounting with -o sync. Among other things, this lets test programs verify correctness with a single mount. Reviewed-by: Yehuda Sadeh <yehuda@hq.newdream.net> Signed-off-by: Sage Weil <sage@newdream.net>
2011-07-26 11:26:07 -07:00
parent 252c6728de
commit 4918b6d140
4 changed files with 18 additions and 2 deletions
@@ -543,6 +543,8 @@ extern void ceph_reservation_status(struct ceph_fs_client *client,
 /*
 * we keep buffered readdir results attached to file->private_data
 */
+#define CEPH_F_SYNC     1
+
 struct ceph_file_info {
 	short fmode;     /* initialized on open */
 	short flags;     /* CEPH_F_* */