From: Sage Weil <sage@newdream.net>
Date: Tue, 26 Jul 2011 18:26:07 +0000 (-0700)
Subject: ceph: add F_SYNC file flag to force sync (non-O_DIRECT) io
X-Git-Tag: v3.1-rc1~220^2~21
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4918b6d140c4822201ebbe2f070875332aff337b;p=pandora-kernel.git

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>
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