Unverified Commit b38b64ff authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!11355 ext4: Fix wrong da count caused by concurrent racing on extent tree 

Merge Pull Request from: @ci-robot 
 
PR sync from: Zhihao Cheng <chengzhihao1@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/L5G7IUPG3FAVOODUS5BGKMGACWP3O54J/ 
 
https://gitee.com/openeuler/kernel/issues/IAODWM 
 
Link:https://gitee.com/openeuler/kernel/pulls/11355

 

Reviewed-by: default avatarzhangyi (F) <yi.zhang@huawei.com>
Signed-off-by: default avatarZhang Peng <zhangpeng362@huawei.com>
parents 362ef656 8c19d54b

fs/ext4/inode.c

+2 −0
Original line number Diff line number Diff line
@@ -3676,8 +3676,10 @@ static inline int ext4_iomap_buffered_da_write_begin(struct inode *inode, 
static int ext4_iomap_punch_delalloc(struct inode *inode, loff_t offset,

				     loff_t length)

{

	down_write(&EXT4_I(inode)->i_data_sem);

	ext4_es_remove_extent(inode, offset >> inode->i_blkbits,

			DIV_ROUND_UP_ULL(length, EXT4_BLOCK_SIZE(inode->i_sb)));

	up_write(&EXT4_I(inode)->i_data_sem);

	return 0;

}