函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:fs\namespace.c Create Date:2022-07-29 10:39:24
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：alloc_vfsmnt

函数原型：static struct mount *alloc_vfsmnt(const char *name)

返回类型：struct mount

参数：

类型参数名称
const char *name
177  mnt等于Shortcuts
178  如果mnt则
181  err等于mnt_alloc_id(mnt)
182  如果err则转到:out_free_cache
185  如果name则
186  Name of device e.g. /dev/dsk/hda1 等于kstrdup_const - conditionally duplicate an existing const string*@s: the string to duplicate*@gfp: the GFP mask used in the kmalloc() call when allocating memory* Note: Strings allocated by kstrdup_const should be freed by kfree_const.
187  如果非 Name of device e.g. /dev/dsk/hda1 则转到:out_free_id
198  mnt_count等于1
199  mnt_writers等于0
202  INIT_HLIST_NODE( & mnt_hash)
203  初始化链表头
204  初始化链表头
205  初始化链表头
206  初始化链表头
207  初始化链表头
208  初始化链表头
209  初始化链表头
210  INIT_HLIST_NODE( & list mounts with the same mountpoint )
211  初始化链表头
212  INIT_HLIST_HEAD( & mnt_stuck_children)
214  返回:mnt
220  out_free_id :
221  mnt_free_id(mnt)
222  out_free_cache :
223  kmem_cache_free(mnt_cache, mnt)
224  返回:NULL
调用者
名称描述
vfs_create_mountvfs_create_mount - Create a mount for a configured superblock*@fc: The configuration context with the superblock attached* Create a mount to an already configured superblock. If necessary, the* caller should invoke vfs_get_tree() before calling this.
clone_mnt