multiple files: another attempt to remove includes

There are many include statements that are not needed.
A previous more ambitious attempt failed because of *BSD plafrom
(see https://review.gluster.org/#/c/glusterfs/+/21929/ )

Now trying a more conservative reduction.
It does not solve all circular deps that we have, but it
does reduce some of them. There is just too much to handle
reasonably (dht-common.h includes dht-lock.h which includes
dht-common.h ...), but it does reduce the overall number of lines
of include we need to look at in the future to understand and fix
the mess later one.

Change-Id: I550cd001bdefb8be0fe67632f783c0ef6bee3f9f
updates: bz#1193929
Signed-off-by: Yaniv Kaul <ykaul@redhat.com>

14 files changed, 24 insertions, 45 deletions

diff --git a/libglusterfs/src/glusterfs/circ-buff.h b/libglusterfs/src/glusterfs/circ-buff.h
index 4453b8487cd..822345b641b 100644
--- a/libglusterfs/src/glusterfs/circ-buff.h
+++ b/libglusterfs/src/glusterfs/circ-buff.h
@@ -12,8 +12,6 @@
 #define _CB_H
 
 #include "glusterfs/common-utils.h"
-#include "glusterfs/logging.h"
-#include "glusterfs/mem-types.h"
 
 #define BUFFER_SIZE 10
 #define TOTAL_SIZE BUFFER_SIZE + 1
diff --git a/libglusterfs/src/glusterfs/cluster-syncop.h b/libglusterfs/src/glusterfs/cluster-syncop.h
index cfd3c338683..d0ad5ed548c 100644
--- a/libglusterfs/src/glusterfs/cluster-syncop.h
+++ b/libglusterfs/src/glusterfs/cluster-syncop.h
@@ -11,10 +11,10 @@
 #ifndef _CLUSTER_SYNCOP_H
 #define _CLUSTER_SYNCOP_H
 
-#include "glusterfs/xlator.h"
 #include <sys/time.h>
 #include <pthread.h>
 #include <ucontext.h>
+
 #include "glusterfs/defaults.h"
 #include "glusterfs/default-args.h"
 #include "glusterfs/syncop.h"
diff --git a/libglusterfs/src/glusterfs/common-utils.h b/libglusterfs/src/glusterfs/common-utils.h
index 49ebdba2fc2..d52904021e1 100644
--- a/libglusterfs/src/glusterfs/common-utils.h
+++ b/libglusterfs/src/glusterfs/common-utils.h
@@ -38,15 +38,11 @@ trap(void);
 /* To solve type punned error */
 #define VOID(ptr) ((void **)((void *)ptr))
 
-#include "glusterfs/logging.h"
-#include "glusterfs/glusterfs.h"
-#include "glusterfs/locking.h"
 #include "glusterfs/mem-pool.h"
 #include "glusterfs/compat-uuid.h"
 #include "glusterfs/iatt.h"
 #include "glusterfs/libglusterfs-messages.h"
 #include "protocol-common.h"
-#include "glusterfs/iobuf.h"
 
 #define STRINGIFY(val) #val
 #define TOSTRING(val) STRINGIFY(val)
diff --git a/libglusterfs/src/glusterfs/compat.h b/libglusterfs/src/glusterfs/compat.h
index 9374b79f9af..d2686499973 100644
--- a/libglusterfs/src/glusterfs/compat.h
+++ b/libglusterfs/src/glusterfs/compat.h
@@ -40,10 +40,6 @@
 #define GF_XATTR_NAME_MAX XATTR_NAME_MAX
 #endif /* GF_LINUX_HOST_OS */
 
-#ifdef HAVE_XATTR_H
-#include <sys/xattr.h>
-#endif
-
 /*
  * Define the fallocate flags in case we do not have the header. This also
  * accounts for older systems that do not define FALLOC_FL_PUNCH_HOLE.
diff --git a/libglusterfs/src/glusterfs/dict.h b/libglusterfs/src/glusterfs/dict.h
index 022f564f62a..7854c9feaa1 100644
--- a/libglusterfs/src/glusterfs/dict.h
+++ b/libglusterfs/src/glusterfs/dict.h
@@ -16,7 +16,6 @@
 #include <pthread.h>
 
 #include "glusterfs/common-utils.h"
-#include "glusterfs/libglusterfs-messages.h"
 
 typedef struct _data data_t;
 typedef struct _dict dict_t;
diff --git a/libglusterfs/src/glusterfs/event-history.h b/libglusterfs/src/glusterfs/event-history.h
index c1af8934c03..f0e0422418e 100644
--- a/libglusterfs/src/glusterfs/event-history.h
+++ b/libglusterfs/src/glusterfs/event-history.h
@@ -11,8 +11,10 @@
 #ifndef _EH_H
 #define _EH_H
 
-#include "glusterfs/mem-types.h"
-#include "glusterfs/circ-buff.h"
+#include <pthread.h>              // for pthread_mutex_t
+#include <stddef.h>               // for size_t
+#include "glusterfs/circ-buff.h"  // for buffer_t, circular_buffer_t
+#include "glusterfs/glusterfs.h"  // for gf_boolean_t
 
 struct event_hist {
     buffer_t *buffer;
diff --git a/libglusterfs/src/glusterfs/fd-lk.h b/libglusterfs/src/glusterfs/fd-lk.h
index 6465e6d3f58..76cc680306a 100644
--- a/libglusterfs/src/glusterfs/fd-lk.h
+++ b/libglusterfs/src/glusterfs/fd-lk.h
@@ -14,11 +14,7 @@
 #include "glusterfs/fd.h"
 #include "glusterfs/locking.h"
 #include "glusterfs/list.h"
-#include "glusterfs/logging.h"
-#include "glusterfs/mem-pool.h"
-#include "glusterfs/mem-types.h"
 #include "glusterfs/glusterfs.h"
-#include "glusterfs/common-utils.h"
 
 #define get_lk_type(type)                                                      \
     type == F_UNLCK ? "F_UNLCK" : (type == F_RDLCK ? "F_RDLCK" : "F_WRLCK")
diff --git a/libglusterfs/src/glusterfs/fd.h b/libglusterfs/src/glusterfs/fd.h
index cdbe2894bc3..28906d34e4d 100644
--- a/libglusterfs/src/glusterfs/fd.h
+++ b/libglusterfs/src/glusterfs/fd.h
@@ -17,7 +17,6 @@
 #include "glusterfs/glusterfs.h"
 #include "glusterfs/locking.h"
 #include "glusterfs/fd-lk.h"
-#include "glusterfs/common-utils.h"
 
 #define GF_ANON_FD_NO -2
 #define GF_ANON_FD_FLAGS (O_RDWR | O_LARGEFILE)
diff --git a/libglusterfs/src/glusterfs/hashfn.h b/libglusterfs/src/glusterfs/hashfn.h
index a4cb33f072a..6e92e706d8c 100644
--- a/libglusterfs/src/glusterfs/hashfn.h
+++ b/libglusterfs/src/glusterfs/hashfn.h
@@ -20,6 +20,4 @@ SuperFastHash(const char *data, int32_t len);
 uint32_t
 gf_dm_hashfn(const char *msg, int len);
 
-uint32_t
-ReallySimpleHash(char *path, int len);
 #endif /* __HASHFN_H__ */
diff --git a/libglusterfs/src/glusterfs/iobuf.h b/libglusterfs/src/glusterfs/iobuf.h
index 6de0f13ae36..792d4fe1529 100644
--- a/libglusterfs/src/glusterfs/iobuf.h
+++ b/libglusterfs/src/glusterfs/iobuf.h
@@ -11,11 +11,12 @@
 #ifndef _IOBUF_H_
 #define _IOBUF_H_
 
-#include "glusterfs/list.h"
-#include "glusterfs/common-utils.h"
-#include <pthread.h>
+#include <stddef.h>  // for size_t
 #include <sys/mman.h>
-#include <sys/uio.h>
+#include "glusterfs/atomic.h"   // for gf_atomic_t
+#include <sys/uio.h>            // for struct iovec
+#include "glusterfs/locking.h"  // for gf_lock_t
+#include "glusterfs/list.h"
 
 #define GF_VARIABLE_IOBUF_COUNT 32
 
diff --git a/libglusterfs/src/glusterfs/mem-pool.h b/libglusterfs/src/glusterfs/mem-pool.h
index 95579509866..004aa179b19 100644
--- a/libglusterfs/src/glusterfs/mem-pool.h
+++ b/libglusterfs/src/glusterfs/mem-pool.h
@@ -12,7 +12,6 @@
 #define _MEM_POOL_H_
 
 #include "glusterfs/list.h"
-#include "glusterfs/locking.h"
 #include "glusterfs/atomic.h"
 #include "glusterfs/logging.h"
 #include "glusterfs/mem-types.h"
diff --git a/libglusterfs/src/glusterfs/rbthash.h b/libglusterfs/src/glusterfs/rbthash.h
index 3327ebf73c5..4c731de69c2 100644
--- a/libglusterfs/src/glusterfs/rbthash.h
+++ b/libglusterfs/src/glusterfs/rbthash.h
@@ -10,14 +10,12 @@
 
 #ifndef __RBTHASH_TABLE_H_
 #define __RBTHASH_TABLE_H_
-#include "rb.h"
-#include "glusterfs/locking.h"
-#include "glusterfs/mem-pool.h"
-#include "glusterfs/logging.h"
-#include "glusterfs/common-utils.h"
-#include "glusterfs/list.h"
 
-#include <pthread.h>
+#include <stdint.h>               // for uint32_t
+#include "glusterfs/glusterfs.h"  // for gf_boolean_t, glusterfs_ctx_t
+#include "glusterfs/list.h"       // for list_head
+#include "glusterfs/locking.h"    // for gf_lock_t
+struct mem_pool;
 
 #define GF_RBTHASH_MEMPOOL 16384  // 1048576
 #define GF_RBTHASH "rbthash"
diff --git a/libglusterfs/src/glusterfs/syncop.h b/libglusterfs/src/glusterfs/syncop.h
index e0f10175cea..b00988eeef1 100644
--- a/libglusterfs/src/glusterfs/syncop.h
+++ b/libglusterfs/src/glusterfs/syncop.h
@@ -11,11 +11,11 @@
 #ifndef _SYNCOP_H
 #define _SYNCOP_H
 
-#include "glusterfs/xlator.h"
 #include <sys/time.h>
 #include <pthread.h>
 #include <ucontext.h>
-
+#include "glusterfs/dict.h"   // for dict_t
+#include "glusterfs/stack.h"  // for call_frame_t, STACK_DESTROY, STACK_...
 #define SYNCENV_PROC_MAX 16
 #define SYNCENV_PROC_MIN 2
 #define SYNCPROC_IDLE_TIME 600
diff --git a/libglusterfs/src/glusterfs/xlator.h b/libglusterfs/src/glusterfs/xlator.h
index 1a0ed99774b..42cbdc1ac93 100644
--- a/libglusterfs/src/glusterfs/xlator.h
+++ b/libglusterfs/src/glusterfs/xlator.h
@@ -11,19 +11,16 @@
 #ifndef _XLATOR_H
 #define _XLATOR_H
 
-#include <stdio.h>
-#include <stdint.h>
-#include <inttypes.h>
-
+#include <stdint.h>                 // for int32_t
+#include <sys/types.h>              // for off_t, mode_t, off64_t, dev_t
+#include "glusterfs-fops.h"         // for GF_FOP_MAXVALUE, entrylk_cmd
+#include "glusterfs/atomic.h"       // for gf_atomic_t
+#include "glusterfs/glusterfs.h"    // for gf_boolean_t, glusterfs_ctx_t
+#include "glusterfs/compat-uuid.h"  // for uuid_t
+#include "glusterfs/compat.h"
 #include "glusterfs/event-history.h"
-#include "glusterfs/logging.h"
-#include "glusterfs/common-utils.h"
 #include "glusterfs/dict.h"
-#include "glusterfs/compat.h"
-#include "glusterfs/list.h"
 #include "glusterfs/latency.h"
-#include "glusterfs/compat-uuid.h"
-#include "glusterfs/syscall.h"
 
 #define FIRST_CHILD(xl) (xl->children->xlator)
 #define SECOND_CHILD(xl) (xl->children->next->xlator)