[PATCH v4 09/12] ext4: make ext4_es_remove_extent() return void

Baokun Li
2023-04-24T03:40:01Z

Now ext4_es_remove_extent() never fails, so make it return void.

Signed-off-by: Baokun Li <libaokun1@huawei.com>
---
fs/ext4/extents.c | 34 ++++++----------------------------
fs/ext4/extents_status.c | 12 ++++++------
fs/ext4/extents_status.h | 4 ++--
fs/ext4/inline.c | 12 ++----------
fs/ext4/inode.c | 8 ++------
5 files changed, 18 insertions(+), 52 deletions(-)

diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 3559ea6b0781..e6695fec59af 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -4403,15 +4403,8 @@ int ext4_ext_truncate(handle_t *handle, struct inode *inode)

last_block = (inode->i_size + sb->s_blocksize - 1)
>> EXT4_BLOCK_SIZE_BITS(sb);
-retry:
- err = ext4_es_remove_extent(inode, last_block,
- EXT_MAX_BLOCKS - last_block);
- if (err == -ENOMEM) {
- memalloc_retry_wait(GFP_ATOMIC);
- goto retry;
- }
- if (err)
- return err;
+ ext4_es_remove_extent(inode, last_block, EXT_MAX_BLOCKS - last_block);
+
retry_remove_space:
err = ext4_ext_remove_space(inode, last_block, EXT_MAX_BLOCKS - 1);
if (err == -ENOMEM) {
@@ -5363,13 +5356,7 @@ static int ext4_collapse_range(struct file *file, loff_t offset, loff_t len)

down_write(&EXT4_I(inode)->i_data_sem);
ext4_discard_preallocations(inode, 0);
-
- ret = ext4_es_remove_extent(inode, punch_start,
- EXT_MAX_BLOCKS - punch_start);
- if (ret) {
- up_write(&EXT4_I(inode)->i_data_sem);
- goto out_stop;
- }
+ ext4_es_remove_extent(inode, punch_start, EXT_MAX_BLOCKS - punch_start);

ret = ext4_ext_remove_space(inode, punch_start, punch_stop - 1);
if (ret) {
@@ -5554,12 +5541,7 @@ static int ext4_insert_range(struct file *file, loff_t offset, loff_t len)
ext4_free_ext_path(path);
}

- ret = ext4_es_remove_extent(inode, offset_lblk,
- EXT_MAX_BLOCKS - offset_lblk);
- if (ret) {
- up_write(&EXT4_I(inode)->i_data_sem);
- goto out_stop;
- }
+ ext4_es_remove_extent(inode, offset_lblk, EXT_MAX_BLOCKS - offset_lblk);

/*
* if offset_lblk lies in a hole which is at start of file, use
@@ -5617,12 +5599,8 @@ ext4_swap_extents(handle_t *handle, struct inode *inode1,
BUG_ON(!inode_is_locked(inode1));
BUG_ON(!inode_is_locked(inode2));

- *erp = ext4_es_remove_extent(inode1, lblk1, count);
- if (unlikely(*erp))
- return 0;
- *erp = ext4_es_remove_extent(inode2, lblk2, count);
- if (unlikely(*erp))
- return 0;
+ ext4_es_remove_extent(inode1, lblk1, count);
+ ext4_es_remove_extent(inode2, lblk2, count);

while (count) {
struct ext4_extent *ex1, *ex2, tmp_ex;
diff --git a/fs/ext4/extents_status.c b/fs/ext4/extents_status.c
index 91828cf7395b..2a394c40f4b7 100644
--- a/fs/ext4/extents_status.c
+++ b/fs/ext4/extents_status.c
@@ -1464,10 +1464,10 @@ static int __es_remove_extent(struct inode *inode, ext4_lblk_t lblk,
* @len - number of blocks to remove
*
* Reduces block/cluster reservation count and for bigalloc cancels pending
- * reservations as needed. Returns 0 on success, error code on failure.
+ * reservations as needed.
*/
-int ext4_es_remove_extent(struct inode *inode, ext4_lblk_t lblk,
- ext4_lblk_t len)
+void ext4_es_remove_extent(struct inode *inode, ext4_lblk_t lblk,
+ ext4_lblk_t len)
{
ext4_lblk_t end;
int err = 0;
@@ -1475,14 +1475,14 @@ int ext4_es_remove_extent(struct inode *inode, ext4_lblk_t lblk,
struct extent_status *es = NULL;

if (EXT4_SB(inode->i_sb)->s_mount_state & EXT4_FC_REPLAY)
- return 0;
+ return;

trace_ext4_es_remove_extent(inode, lblk, len);
es_debug("remove [%u/%u) from extent status tree of inode %lu\n",
lblk, len, inode->i_ino);

if (!len)
- return err;
+ return;

end = lblk + len - 1;
BUG_ON(end < lblk);
@@ -1505,7 +1505,7 @@ int ext4_es_remove_extent(struct inode *inode, ext4_lblk_t lblk,

ext4_es_print_tree(inode);
ext4_da_release_space(inode, reserved);
- return 0;
+ return;
}

static int __es_shrink(struct ext4_sb_info *sbi, int nr_to_scan,
diff --git a/fs/ext4/extents_status.h b/fs/ext4/extents_status.h
index 4ec30a798260..526a68890aa6 100644
--- a/fs/ext4/extents_status.h
+++ b/fs/ext4/extents_status.h
@@ -133,8 +133,8 @@ extern int ext4_es_insert_extent(struct inode *inode, ext4_lblk_t lblk,
extern void ext4_es_cache_extent(struct inode *inode, ext4_lblk_t lblk,
ext4_lblk_t len, ext4_fsblk_t pblk,
unsigned int status);
-extern int ext4_es_remove_extent(struct inode *inode, ext4_lblk_t lblk,
- ext4_lblk_t len);
+extern void ext4_es_remove_extent(struct inode *inode, ext4_lblk_t lblk,
+ ext4_lblk_t len);
extern void ext4_es_find_extent_range(struct inode *inode,
int (*match_fn)(struct extent_status *es),
ext4_lblk_t lblk, ext4_lblk_t end,
diff --git a/fs/ext4/inline.c b/fs/ext4/inline.c
index b9fb1177fff6..d58cd0331474 100644
--- a/fs/ext4/inline.c
+++ b/fs/ext4/inline.c
@@ -1952,16 +1952,8 @@ int ext4_inline_data_truncate(struct inode *inode, int *has_inline)
* the extent status cache must be cleared to avoid leaving
* behind stale delayed allocated extent entries
*/
- if (!ext4_test_inode_state(inode, EXT4_STATE_MAY_INLINE_DATA)) {
-retry:
- err = ext4_es_remove_extent(inode, 0, EXT_MAX_BLOCKS);
- if (err == -ENOMEM) {
- memalloc_retry_wait(GFP_ATOMIC);
- goto retry;
- }
- if (err)
- goto out_error;
- }
+ if (!ext4_test_inode_state(inode, EXT4_STATE_MAY_INLINE_DATA))
+ ext4_es_remove_extent(inode, 0, EXT_MAX_BLOCKS);

/* Clear the content in the xattr space. */
if (inline_size > EXT4_MIN_INLINE_DATA_SIZE) {
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 20de04399c8b..a0bfe77d5537 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -4034,12 +4034,8 @@ int ext4_punch_hole(struct file *file, loff_t offset, loff_t length)
down_write(&EXT4_I(inode)->i_data_sem);
ext4_discard_preallocations(inode, 0);

- ret = ext4_es_remove_extent(inode, first_block,
- stop_block - first_block);
- if (ret) {
- up_write(&EXT4_I(inode)->i_data_sem);
- goto out_stop;
- }
+ ext4_es_remove_extent(inode, first_block,
+ stop_block - first_block);

if (ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))
ret = ext4_ext_remove_space(inode, first_block,
--
2.31.1