linux-ext4 - [PATCH 2/7] ext4: drop iblock parameter

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Message-Id: <20240330120236.3789589-3-yi.zhang@huaweicloud.com>
Date: Sat, 30 Mar 2024 20:02:31 +0800
From: Zhang Yi <yi.zhang@...weicloud.com>
To: linux-ext4@...r.kernel.org
Cc: linux-fsdevel@...r.kernel.org,
	tytso@....edu,
	adilger.kernel@...ger.ca,
	jack@...e.cz,
	yi.zhang@...wei.com,
	yi.zhang@...weicloud.com,
	chengzhihao1@...wei.com,
	yukuai3@...wei.com
Subject: [PATCH 2/7] ext4: drop iblock parameter

From: Zhang Yi <yi.zhang@...wei.com>

The start block of the delalloc extent to be inserted is equal to
map->m_lblk, just drop the duplicate iblock input parameter.

Signed-off-by: Zhang Yi <yi.zhang@...wei.com>
---
 fs/ext4/inode.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index b98f92622442..95f169801006 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -1683,8 +1683,7 @@ static int ext4_insert_delayed_block(struct inode *inode, ext4_lblk_t lblk)
  * time. This function looks up the requested blocks and sets the
  * buffer delay bit under the protection of i_data_sem.
  */
-static int ext4_da_map_blocks(struct inode *inode, sector_t iblock,
-			      struct ext4_map_blocks *map,
+static int ext4_da_map_blocks(struct inode *inode, struct ext4_map_blocks *map,
 			      struct buffer_head *bh)
 {
 	struct extent_status es;
@@ -1704,8 +1703,8 @@ static int ext4_da_map_blocks(struct inode *inode, sector_t iblock,
 		  (unsigned long) map->m_lblk);
 
 	/* Lookup extent status tree firstly */
-	if (ext4_es_lookup_extent(inode, iblock, NULL, &es)) {
-		retval = es.es_len - (iblock - es.es_lblk);
+	if (ext4_es_lookup_extent(inode, map->m_lblk, NULL, &es)) {
+		retval = es.es_len - (map->m_lblk - es.es_lblk);
 		if (retval > map->m_len)
 			retval = map->m_len;
 		map->m_len = retval;
@@ -1724,7 +1723,7 @@ static int ext4_da_map_blocks(struct inode *inode, sector_t iblock,
 			return 0;
 		}
 
-		map->m_pblk = ext4_es_pblock(&es) + iblock - es.es_lblk;
+		map->m_pblk = ext4_es_pblock(&es) + map->m_lblk - es.es_lblk;
 		if (ext4_es_is_written(&es))
 			map->m_flags |= EXT4_MAP_MAPPED;
 		else if (ext4_es_is_unwritten(&es))
@@ -1815,7 +1814,7 @@ int ext4_da_get_block_prep(struct inode *inode, sector_t iblock,
 	 * preallocated blocks are unmapped but should treated
 	 * the same as allocated blocks.
 	 */
-	ret = ext4_da_map_blocks(inode, iblock, &map, bh);
+	ret = ext4_da_map_blocks(inode, &map, bh);
 	if (ret <= 0)
 		return ret;
 
-- 
2.39.2