[PATCH v4 04/34] ext4: drop iblock parameter

Zhang Yi
2024-04-10T14:38:31Z

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@huawei.com>
---
fs/ext4/inode.c | 15 +++++++--------
1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index e4043ddb07a5..cccc16506f5f 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -1712,8 +1712,7 @@ 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;
@@ -1733,8 +1732,8 @@ 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;
@@ -1754,7 +1753,7 @@ 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))
@@ -1788,8 +1787,8 @@ static int ext4_da_map_blocks(struct inode *inode, sector_t iblock,
* inserting delalloc range haven't been delayed or allocated
* whitout holding i_rwsem and folio lock.
*/
- 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;
@@ -1846,7 +1845,7 @@ 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