clean up handling of special client pids

- no need to name a lower boundary [drop GF_CLIENT_PID_MIN]
- drop utility function to decide about pid speciality [gf_pid_client_check()];
  when we implement uniform policy for special pids, use just comparison with
  GF_CLIENT_PID_MAX (currently such uniform policy exists in io-threads, where
  special clients get lowest priority)
- io-threads: drop numeric literal, use GF_CLIENT_PID_MAX
- xattr flipping (in fuse):
  - fuse_xattr_alloc_default() made static
  - avoid compiler warnings wrt. partial enum traversal in the switch
    by not casting the original numeric value to gf_client_pid_t (enum) type
  - trim down the switch to those cases with which there is something to do
    [GF_CLIENT_PID_GSYNCD, GF_CLIENT_PID_HADOOP]
  - eliminate the (theoretical) chance of succesfully returning
    from fuse_flip_xattr_ns() with unallocated nkey
    [as was the case with pids GF_CLIENT_PID_{MIN,MAX,DEFRAG}]

Change-Id: Ic2b83b908d8e3be23a7fba1e5895869828a6194b
BUG: 765433
Signed-off-by: Csaba Henk <csaba@redhat.com>
Reviewed-on: http://review.gluster.com/3170
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Jeff Darcy <jdarcy@redhat.com>
Reviewed-by: Anand Avati <avati@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/xlators/performance/io-threads/src/io-threads.c b/xlators/performance/io-threads/src/io-threads.c
index d316a19a463..66864fcd438 100644
--- a/xlators/performance/io-threads/src/io-threads.c
+++ b/xlators/performance/io-threads/src/io-threads.c
@@ -202,7 +202,7 @@ iot_schedule (call_frame_t *frame, xlator_t *this, call_stub_t *stub)
         int             ret = -1;
         iot_pri_t       pri = IOT_PRI_MAX - 1;
 
-        if (frame->root->pid < 0) {
+        if (frame->root->pid < GF_CLIENT_PID_MAX) {
                 pri = IOT_PRI_LEAST;
                 goto out;
         }