函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:fs\block_dev.c Create Date:2022-07-29 10:46:06
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：bd_set_size

函数原型：void bd_set_size(struct block_device *bdev, loff_t size)

返回类型：void

参数：

类型参数名称
struct block_device *bdev
loff_tsize
1503  inode_lock( will die )
1504  NOTE: unlike i_size_read(), i_size_write() does need locking around it* (normally i_mutex), otherwise on 32bit/SMP an update of i_size_seqcount* can be lost, resulting in subsequent i_size_read() calls spinning forever.
1505  inode_unlock( will die )
调用者
名称描述
__blkdev_getd_mutex locking:* mutex_lock(part->bd_mutex)* mutex_lock_nested(whole->bd_mutex, 1)