Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:fs\namespace.c Create Date:2022-07-28 20:09:10
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Name:mnt_clone_write - get write access to a mount*@mnt: the mount on which to take a write* This is effectively like mnt_want_write, except* it must only be used to take an extra write reference* on a mountpoint that we already know has a write reference

Proto:int mnt_clone_write(struct vfsmount *mnt)

Type:int

Parameter:

TypeParameterName
struct vfsmount *mnt
377  If __mnt_is_readonly: check whether a mount is read-only*@mnt: the mount to check for its write status* This shouldn't be used directly ouside of the VFS.* It does not guarantee that the filesystem will stay* r/w, just that it is right *now*. This can not and Then Return -EROFS
379  Even if we don't have any preemption, we need preempt disable/enable* to be barriers, so that we don't have things like get_user/put_user* that can cause faults and scheduling migrate into our preempt-protected* region.()
380  mnt_inc_writers(real_mount(mnt))
381  preempt_enable()
382  Return 0
Caller
NameDescribe
__mnt_want_write_file__mnt_want_write_file - get write access to a file's mount*@file: the file who's mount on which to take a write* This is like __mnt_want_write, but it takes a file and can* do some optimisations if the file is open for write already