Fix BZ 865858: remove unnecessary system calls around xattr ops

The following is a simple refactoring of the read and write metadata methods
to just make calls to get/set/remove xattr operations instead of trying to
stat/open/close the file. For a single GET operation, this brings down the
number of system calls made from 13 to 3 for a file object with no
significantly sized metadata (meaning, only 1 xattr key/value pair is needed
to store the metadata).

Change-Id: I698f5886d63d5203f130c8eac1536a3ee4b0dbfb
BUG: 865858
Signed-off-by: Peter Portante <peter.portante@redhat.com>
Reviewed-on: http://review.gluster.org/4078
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Jeff Darcy <jdarcy@redhat.com>
Reviewed-by: Anand Avati <avati@redhat.com>

0 files changed, 0 insertions, 0 deletions