MFV r353561: 10343 ZoL: Prefix all refcount functions with zfs_

illumos/illumos-gate@e914ace2e9d9bf2dbf9a1f1ce81cb776022096f5
https://github.com/illumos/illumos-gate/commit/e914ace2e9d9bf2dbf9a1f1ce81cb776022096f5

https://www.illumos.org/issues/10343
  On the openzfs feature/porting matrix, this is listed as:
  prefix to refcount funcs/types
  Having these changes will make it easier to share other work across the
  different ZFS operating systems.
  PR 7963 424fd7c3e Prefix all refcount functions with zfs_
  PR 7885 & 7932 c13060e47 Linux 4.19-rc3+ compat: Remove refcount_t compat
  PR 5823 & 5842 4859fe796 Linux 4.11 compat: avoid refcount_t name conflict

Author: Tim Schumacher <timschumi@gmx.de>
Obtained from:	illumos, ZoL
MFC after:	3 weeks

1 files changed, 23 insertions, 21 deletions

diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa_misc.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa_misc.c
index 6ba5bed27b2b..55d85d055b84 100644
--- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa_misc.c
+++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa_misc.c
@@ -85,7 +85,7 @@
  *	definition they must have an existing reference, and will never need
  *	to lookup a spa_t by name.
  *
- * spa_refcount (per-spa refcount_t protected by mutex)
+ * spa_refcount (per-spa zfs_refcount_t protected by mutex)
  *
  *	This reference count keep track of any active users of the spa_t.  The
  *	spa_t cannot be destroyed or freed while this is non-zero.  Internally,
@@ -480,7 +480,7 @@ spa_config_lock_init(spa_t *spa)
 		spa_config_lock_t *scl = &spa->spa_config_lock[i];
 		mutex_init(&scl->scl_lock, NULL, MUTEX_DEFAULT, NULL);
 		cv_init(&scl->scl_cv, NULL, CV_DEFAULT, NULL);
-		refcount_create_untracked(&scl->scl_count);
+		zfs_refcount_create_untracked(&scl->scl_count);
 		scl->scl_writer = NULL;
 		scl->scl_write_wanted = 0;
 	}
@@ -493,7 +493,7 @@ spa_config_lock_destroy(spa_t *spa)
 		spa_config_lock_t *scl = &spa->spa_config_lock[i];
 		mutex_destroy(&scl->scl_lock);
 		cv_destroy(&scl->scl_cv);
-		refcount_destroy(&scl->scl_count);
+		zfs_refcount_destroy(&scl->scl_count);
 		ASSERT(scl->scl_writer == NULL);
 		ASSERT(scl->scl_write_wanted == 0);
 	}
@@ -516,7 +516,7 @@ spa_config_tryenter(spa_t *spa, int locks, void *tag, krw_t rw)
 			}
 		} else {
 			ASSERT(scl->scl_writer != curthread);
-			if (!refcount_is_zero(&scl->scl_count)) {
+			if (!zfs_refcount_is_zero(&scl->scl_count)) {
 				mutex_exit(&scl->scl_lock);
 				spa_config_exit(spa, locks & ((1 << i) - 1),
 				    tag);
@@ -524,7 +524,7 @@ spa_config_tryenter(spa_t *spa, int locks, void *tag, krw_t rw)
 			}
 			scl->scl_writer = curthread;
 		}
-		(void) refcount_add(&scl->scl_count, tag);
+		(void) zfs_refcount_add(&scl->scl_count, tag);
 		mutex_exit(&scl->scl_lock);
 	}
 	return (1);
@@ -550,14 +550,14 @@ spa_config_enter(spa_t *spa, int locks, void *tag, krw_t rw)
 			}
 		} else {
 			ASSERT(scl->scl_writer != curthread);
-			while (!refcount_is_zero(&scl->scl_count)) {
+			while (!zfs_refcount_is_zero(&scl->scl_count)) {
 				scl->scl_write_wanted++;
 				cv_wait(&scl->scl_cv, &scl->scl_lock);
 				scl->scl_write_wanted--;
 			}
 			scl->scl_writer = curthread;
 		}
-		(void) refcount_add(&scl->scl_count, tag);
+		(void) zfs_refcount_add(&scl->scl_count, tag);
 		mutex_exit(&scl->scl_lock);
 	}
 	ASSERT3U(wlocks_held, <=, locks);
@@ -571,8 +571,8 @@ spa_config_exit(spa_t *spa, int locks, void *tag)
 		if (!(locks & (1 << i)))
 			continue;
 		mutex_enter(&scl->scl_lock);
-		ASSERT(!refcount_is_zero(&scl->scl_count));
-		if (refcount_remove(&scl->scl_count, tag) == 0) {
+		ASSERT(!zfs_refcount_is_zero(&scl->scl_count));
+		if (zfs_refcount_remove(&scl->scl_count, tag) == 0) {
 			ASSERT(scl->scl_writer == NULL ||
 			    scl->scl_writer == curthread);
 			scl->scl_writer = NULL;	/* OK in either case */
@@ -591,7 +591,8 @@ spa_config_held(spa_t *spa, int locks, krw_t rw)
 		spa_config_lock_t *scl = &spa->spa_config_lock[i];
 		if (!(locks & (1 << i)))
 			continue;
-		if ((rw == RW_READER && !refcount_is_zero(&scl->scl_count)) ||
+		if ((rw == RW_READER &&
+		    !zfs_refcount_is_zero(&scl->scl_count)) ||
 		    (rw == RW_WRITER && scl->scl_writer == curthread))
 			locks_held |= 1 << i;
 	}
@@ -770,7 +771,7 @@ spa_add(const char *name, nvlist_t *config, const char *altroot)
 	    spa_deadman_timeout, spa, 0);
 #endif
 #endif
-	refcount_create(&spa->spa_refcount);
+	zfs_refcount_create(&spa->spa_refcount);
 	spa_config_lock_init(spa);
 
 	avl_add(&spa_namespace_avl, spa);
@@ -851,7 +852,7 @@ spa_remove(spa_t *spa)
 
 	ASSERT(MUTEX_HELD(&spa_namespace_lock));
 	ASSERT(spa->spa_state == POOL_STATE_UNINITIALIZED);
-	ASSERT3U(refcount_count(&spa->spa_refcount), ==, 0);
+	ASSERT3U(zfs_refcount_count(&spa->spa_refcount), ==, 0);
 
 	nvlist_free(spa->spa_config_splitting);
 
@@ -899,7 +900,7 @@ spa_remove(spa_t *spa)
 #endif
 #endif
 
-	refcount_destroy(&spa->spa_refcount);
+	zfs_refcount_destroy(&spa->spa_refcount);
 
 	spa_config_lock_destroy(spa);
 
@@ -958,9 +959,9 @@ spa_next(spa_t *prev)
 void
 spa_open_ref(spa_t *spa, void *tag)
 {
-	ASSERT(refcount_count(&spa->spa_refcount) >= spa->spa_minref ||
+	ASSERT(zfs_refcount_count(&spa->spa_refcount) >= spa->spa_minref ||
 	    MUTEX_HELD(&spa_namespace_lock));
-	(void) refcount_add(&spa->spa_refcount, tag);
+	(void) zfs_refcount_add(&spa->spa_refcount, tag);
 }
 
 /*
@@ -970,9 +971,9 @@ spa_open_ref(spa_t *spa, void *tag)
 void
 spa_close(spa_t *spa, void *tag)
 {
-	ASSERT(refcount_count(&spa->spa_refcount) > spa->spa_minref ||
+	ASSERT(zfs_refcount_count(&spa->spa_refcount) > spa->spa_minref ||
 	    MUTEX_HELD(&spa_namespace_lock));
-	(void) refcount_remove(&spa->spa_refcount, tag);
+	(void) zfs_refcount_remove(&spa->spa_refcount, tag);
 }
 
 /*
@@ -986,7 +987,7 @@ spa_close(spa_t *spa, void *tag)
 void
 spa_async_close(spa_t *spa, void *tag)
 {
-	(void) refcount_remove(&spa->spa_refcount, tag);
+	(void) zfs_refcount_remove(&spa->spa_refcount, tag);
 }
 
 /*
@@ -999,7 +1000,7 @@ spa_refcount_zero(spa_t *spa)
 {
 	ASSERT(MUTEX_HELD(&spa_namespace_lock));
 
-	return (refcount_count(&spa->spa_refcount) == spa->spa_minref);
+	return (zfs_refcount_count(&spa->spa_refcount) == spa->spa_minref);
 }
 
 /*
@@ -2056,7 +2057,8 @@ spa_init(int mode)
 	}
 #endif
 #endif /* illumos */
-	refcount_sysinit();
+
+	zfs_refcount_init();
 	unique_init();
 	range_tree_init();
 	metaslab_alloc_trace_init();
@@ -2096,7 +2098,7 @@ spa_fini(void)
 	metaslab_alloc_trace_fini();
 	range_tree_fini();
 	unique_fini();
-	refcount_fini();
+	zfs_refcount_fini();
 	scan_fini();
 	
 	avl_destroy(&spa_namespace_avl);