[27/40] btrfs: Rename should_ignore_root() to btrfs_should_ignore_reloc_root() and export it

Commit Message

Qu Wenruo March 23, 2020, 10:24 a.m. UTC

This function is mostly single purpose to relocation backref cache, but
since we're moving the main part of backref cache to backref.c, we need
to export such function.

And to avoid confusing, rename the function to
btrfs_should_ignore_reloc_root() make the name a little more clear.

Signed-off-by: Qu Wenruo <[e-mail]>
---
 fs/btrfs/ctree.h      |  1 +
 fs/btrfs/relocation.c | 10 ++++++----
 2 files changed, 7 insertions(+), 4 deletions(-)

Patch

diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index b57bb3e5f1f2..7ee38faf91e8 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -3383,6 +3383,7 @@  int btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans,
 			      struct btrfs_pending_snapshot *pending);
 struct btrfs_root *find_reloc_root(struct btrfs_fs_info *fs_info,
 				   u64 bytenr);
+int btrfs_should_ignore_reloc_root(struct btrfs_root *root);
 
 /* scrub.c */
 int btrfs_scrub_dev(struct btrfs_fs_info *fs_info, u64 devid, u64 start,
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index b54c78f39f25..29bf34b1114c 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -312,7 +312,8 @@  static bool reloc_root_is_dead(struct btrfs_root *root)
  *
  * Reloc tree after swap is considered dead, thus not considered as valid.
  * This is enough for most callers, as they don't distinguish dead reloc root
- * from no reloc root.  But should_ignore_root() below is a special case.
+ * from no reloc root.  But btrfs_should_ignore_reloc_root() below is a
+ * special case.
  */
 static bool have_reloc_root(struct btrfs_root *root)
 {
@@ -323,7 +324,7 @@  static bool have_reloc_root(struct btrfs_root *root)
 	return true;
 }
 
-static int should_ignore_root(struct btrfs_root *root)
+int btrfs_should_ignore_reloc_root(struct btrfs_root *root)
 {
 	struct btrfs_root *reloc_root;
 
@@ -349,6 +350,7 @@  static int should_ignore_root(struct btrfs_root *root)
 	 */
 	return 1;
 }
+
 /*
  * find reloc tree by address of tree root
  */
@@ -494,7 +496,7 @@  static int handle_indirect_tree_backref(struct btrfs_backref_cache *cache,
 		/* tree root */
 		ASSERT(btrfs_root_bytenr(&root->root_item) ==
 		       cur->bytenr);
-		if (should_ignore_root(root)) {
+		if (btrfs_should_ignore_reloc_root(root)) {
 			btrfs_put_root(root);
 			list_add(&cur->list, &cache->useless_node);
 		} else {
@@ -535,7 +537,7 @@  static int handle_indirect_tree_backref(struct btrfs_backref_cache *cache,
 		if (!path->nodes[level]) {
 			ASSERT(btrfs_root_bytenr(&root->root_item) ==
 			       lower->bytenr);
-			if (should_ignore_root(root)) {
+			if (btrfs_should_ignore_reloc_root(root)) {
 				btrfs_put_root(root);
 				list_add(&lower->list, &cache->useless_node);
 			} else {