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| author | Sage Weil <sage@newdream.net> | 2011-07-26 11:26:07 -0700 |
|---|---|---|
| committer | Sage Weil <sage@newdream.net> | 2011-07-26 11:26:07 -0700 |
| commit | 4918b6d140c4822201ebbe2f070875332aff337b (patch) | |
| tree | 0327a0a68acd2f8209893b4770ba3c9d9264041c /fs/ceph/super.h | |
| parent | 252c6728de604d6a897d85e212996811d5c8c46c (diff) | |
| download | lwn-4918b6d140c4822201ebbe2f070875332aff337b.tar.gz lwn-4918b6d140c4822201ebbe2f070875332aff337b.zip | |
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/super.h')
| -rw-r--r-- | fs/ceph/super.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/ceph/super.h b/fs/ceph/super.h index 8febe6fce2b1..cdb17d36755c 100644 --- a/fs/ceph/super.h +++ b/fs/ceph/super.h @@ -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_* */ |