on 8/31/2023 10:25 PM, Ritesh Harjani wrote:
> Kemeng Shi <shikemeng@xxxxxxxxxxxxxxx> writes:
>
>> call ext4_mb_mark_context in ext4_free_blocks_simple to:
>> 1. remove repeat code
>> 2. pair update of free_clusters in ext4_mb_new_blocks_simple.
>> 3. add missing ext4_lock_group/ext4_unlock_group protection.
>>
>> Signed-off-by: Kemeng Shi <shikemeng@xxxxxxxxxxxxxxx>
>> ---
>> fs/ext4/mballoc.c | 35 +++--------------------------------
>> 1 file changed, 3 insertions(+), 32 deletions(-)
>
> Looks good to me. Please feel free to add -
>
> Reviewed-by: Ritesh Harjani (IBM) <ritesh.list@xxxxxxxxx>
>
> (One small comment below for previous patch)
>
>>
>> diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
>> index e2be572deb75..c803f74aaf63 100644
>> --- a/fs/ext4/mballoc.c
>> +++ b/fs/ext4/mballoc.c
>> @@ -6414,43 +6414,14 @@ ext4_mb_free_metadata(handle_t *handle, struct ext4_buddy *e4b,
>> static void ext4_free_blocks_simple(struct inode *inode, ext4_fsblk_t block,
>> unsigned long count)
>> {
>> - struct buffer_head *bitmap_bh;
>> + struct ext4_mark_context mc;
>> struct super_block *sb = inode->i_sb;
>> - struct ext4_group_desc *gdp;
>> - struct buffer_head *gdp_bh;
>> ext4_group_t group;
>> ext4_grpblk_t blkoff;
>> - int already_freed = 0, err, i;
>>
>> + ext4_mb_prepare_mark_context(&mc, sb, 0);
>
> It looks like we always use 0 or 1 as the state for struct
> ext4_mark_context. In that case we can keep state member of this struct
> as bool instead of int.
Get it. Thanks for pointing it out!
>
>
>> ext4_get_group_no_and_offset(sb, block, &group, &blkoff);
>> - bitmap_bh = ext4_read_block_bitmap(sb, group);
>> - if (IS_ERR(bitmap_bh)) {
>> - pr_warn("Failed to read block bitmap\n");
>> - return;
>> - }
>> - gdp = ext4_get_group_desc(sb, group, &gdp_bh);
>> - if (!gdp)
>> - goto err_out;
>> -
>> - for (i = 0; i < count; i++) {
>> - if (!mb_test_bit(blkoff + i, bitmap_bh->b_data))
>> - already_freed++;
>> - }
>> - mb_clear_bits(bitmap_bh->b_data, blkoff, count);
>> - err = ext4_handle_dirty_metadata(NULL, NULL, bitmap_bh);
>> - if (err)
>> - goto err_out;
>> - ext4_free_group_clusters_set(
>> - sb, gdp, ext4_free_group_clusters(sb, gdp) +
>> - count - already_freed);
>> - ext4_block_bitmap_csum_set(sb, gdp, bitmap_bh);
>> - ext4_group_desc_csum_set(sb, group, gdp);
>> - ext4_handle_dirty_metadata(NULL, NULL, gdp_bh);
>> - sync_dirty_buffer(bitmap_bh);
>> - sync_dirty_buffer(gdp_bh);
>> -
>> -err_out:
>> - brelse(bitmap_bh);
>> + ext4_mb_mark_context(&mc, group, blkoff, count);
>> }
>>
>> /**
>> --
>> 2.30.0
>
