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From: Qu Wenruo <wqu@suse.com>
To: linux-btrfs@vger.kernel.org
Cc: Nikolay Borisov <nborisov@suse.com>,
	Johannes Thumshirn <jthumshirn@suse.de>
Subject: [PATCH v3 2/9] btrfs: extent-tree: Open-code process_func in __btrfs_mod_ref
Date: Mon, 11 Feb 2019 13:16:46 +0800
Message-ID: <20190211051653.3167-3-wqu@suse.com> (raw)
In-Reply-To: <20190211051653.3167-1-wqu@suse.com>

The process_func function pointer is local to __btrfs_mod_ref() and
points to either btrfs_inc_extent_ref() or btrfs_free_extent().

Open code it to make later delayed ref refactor easier, so we can
refactor btrfs_inc_extent_ref() and btrfs_free_extent() in different
patches.

Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
---
 fs/btrfs/extent-tree.c | 30 ++++++++++++++++--------------
 1 file changed, 16 insertions(+), 14 deletions(-)

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 9f012c2facbe..606187ede47b 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -3252,10 +3252,6 @@ static int __btrfs_mod_ref(struct btrfs_trans_handle *trans,
 	int i;
 	int level;
 	int ret = 0;
-	int (*process_func)(struct btrfs_trans_handle *,
-			    struct btrfs_root *,
-			    u64, u64, u64, u64, u64, u64);
-
 
 	if (btrfs_is_testing(fs_info))
 		return 0;
@@ -3267,11 +3263,6 @@ static int __btrfs_mod_ref(struct btrfs_trans_handle *trans,
 	if (!test_bit(BTRFS_ROOT_REF_COWS, &root->state) && level == 0)
 		return 0;
 
-	if (inc)
-		process_func = btrfs_inc_extent_ref;
-	else
-		process_func = btrfs_free_extent;
-
 	if (full_backref)
 		parent = buf->start;
 	else
@@ -3293,16 +3284,27 @@ static int __btrfs_mod_ref(struct btrfs_trans_handle *trans,
 
 			num_bytes = btrfs_file_extent_disk_num_bytes(buf, fi);
 			key.offset -= btrfs_file_extent_offset(buf, fi);
-			ret = process_func(trans, root, bytenr, num_bytes,
-					   parent, ref_root, key.objectid,
-					   key.offset);
+			if (inc)
+				ret = btrfs_inc_extent_ref(trans, root, bytenr,
+						num_bytes, parent, ref_root,
+						key.objectid, key.offset);
+			else
+				ret = btrfs_free_extent(trans, root, bytenr,
+						num_bytes, parent, ref_root,
+						key.objectid, key.offset);
 			if (ret)
 				goto fail;
 		} else {
 			bytenr = btrfs_node_blockptr(buf, i);
 			num_bytes = fs_info->nodesize;
-			ret = process_func(trans, root, bytenr, num_bytes,
-					   parent, ref_root, level - 1, 0);
+			if (inc)
+				ret = btrfs_inc_extent_ref(trans, root, bytenr,
+						num_bytes, parent, ref_root,
+						level - 1, 0);
+			else
+				ret = btrfs_free_extent(trans, root, bytenr,
+						num_bytes, parent, ref_root,
+						level - 1, 0);
 			if (ret)
 				goto fail;
 		}
-- 
2.20.1


  parent reply index

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-02-11  5:16 [PATCH v3 0/9] btrfs: Refactor delayed ref parameter list Qu Wenruo
2019-02-11  5:16 ` [PATCH v3 1/9] btrfs: delayed-ref: Introduce better documented delayed ref structures Qu Wenruo
2019-02-11 12:55   ` Nikolay Borisov
2019-02-11 13:23     ` Qu Wenruo
2019-02-11 14:20       ` Nikolay Borisov
2019-02-11 14:23         ` Qu Wenruo
2019-02-18  5:00           ` Qu Wenruo
2019-02-18  6:59             ` Su Yue
2019-02-11  5:16 ` Qu Wenruo [this message]
2019-02-11  5:16 ` [PATCH v3 3/9] btrfs: delayed-ref: Use btrfs_ref to refactor btrfs_add_delayed_tree_ref() Qu Wenruo
2019-02-11 12:58   ` Nikolay Borisov
2019-02-11  5:16 ` [PATCH v3 4/9] btrfs: delayed-ref: Use btrfs_ref to refactor btrfs_add_delayed_data_ref() Qu Wenruo
2019-02-11 12:59   ` Nikolay Borisov
2019-02-11  5:16 ` [PATCH v3 5/9] btrfs: ref-verify: Use btrfs_ref to refactor btrfs_ref_tree_mod() Qu Wenruo
2019-02-11 13:00   ` Nikolay Borisov
2019-02-11  5:16 ` [PATCH v3 6/9] btrfs: extent-tree: Use btrfs_ref to refactor add_pinned_bytes() Qu Wenruo
2019-02-11  5:16 ` [PATCH v3 7/9] btrfs: extent-tree: Use btrfs_ref to refactor btrfs_inc_extent_ref() Qu Wenruo
2019-02-11 13:04   ` Nikolay Borisov
2019-02-11  5:16 ` [PATCH v3 8/9] btrfs: extent-tree: Use btrfs_ref to refactor btrfs_free_extent() Qu Wenruo
2019-02-11 13:05   ` Nikolay Borisov
2019-02-11  5:16 ` [PATCH v3 9/9] btrfs: qgroup: Don't scan leaf if we're modifying reloc tree Qu Wenruo
2019-04-03 16:29 ` [PATCH v3 0/9] btrfs: Refactor delayed ref parameter list David Sterba
2019-04-04  1:12   ` Qu Wenruo
2019-04-04  6:44   ` Qu Wenruo

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