Function report |
Source Code:fs\namespace.c |
Create Date:2022-07-28 20:09:09 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:__mnt_want_write - get write access to a mount without freeze protection*@m: the mount on which to take a write* This tells the low-level filesystem that a write is about to be performed to* it, and makes sure that writes are allowed (mnt it read-write)
Proto:int __mnt_want_write(struct vfsmount *m)
Type:int
Parameter:
Type | Parameter | Name |
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struct vfsmount * | m |
313 | mnt = real_mount(m) |
314 | ret = 0 |
317 | mnt_inc_writers(mnt) |
323 | smp_mb() |
324 | When READ_ONCE(mnt_flags) & MNT_WRITE_HOLD cycle |
325 | cpu_relax() |
331 | smp_rmb() |
332 | If mnt_is_readonly(m) Then |
333 | mnt_dec_writers(mnt) |
336 | preempt_enable() |
338 | Return ret |
Name | Describe |
---|---|
touch_atime | |
mnt_want_write | mnt_want_write - get write access to a mount*@m: the mount on which to take a write* This tells the low-level filesystem that a write is about to be performed to* it, and makes sure that writes are allowed (mount is read-write, filesystem |
__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 |
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