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authorSage Weil <sage@newdream.net>2011-07-26 11:26:07 -0700
committerSage Weil <sage@newdream.net>2011-07-26 11:26:07 -0700
commit4918b6d140c4822201ebbe2f070875332aff337b (patch)
tree0327a0a68acd2f8209893b4770ba3c9d9264041c /fs/ceph/ioctl.h
parent252c6728de604d6a897d85e212996811d5c8c46c (diff)
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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>
Diffstat (limited to 'fs/ceph/ioctl.h')
-rw-r--r--fs/ceph/ioctl.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/ceph/ioctl.h b/fs/ceph/ioctl.h
index 52e8fd74d450..0c5167e43180 100644
--- a/fs/ceph/ioctl.h
+++ b/fs/ceph/ioctl.h
@@ -40,5 +40,6 @@ struct ceph_ioctl_dataloc {
struct ceph_ioctl_dataloc)
#define CEPH_IOC_LAZYIO _IO(CEPH_IOCTL_MAGIC, 4)
+#define CEPH_IOC_SYNCIO _IO(CEPH_IOCTL_MAGIC, 5)
#endif