Function report |
Source Code:include\linux\seqlock.h |
Create Date:2022-07-28 05:35:24 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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Name:A locking reader exclusively locks out other writers and locking readers,* but doesn't update the sequence number. Acts like a normal spin_lock/unlock.* Don't need preempt_disable() because that is in the spin_lock already.
Proto:static inline void read_seqlock_excl(seqlock_t *sl)
Type:void
Parameter:
Type | Parameter | Name |
---|---|---|
seqlock_t * | sl |
Name | Describe |
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follow_up | llow_up - Find the mountpoint of path's vfsmount* Given a path, find the mountpoint of its source file system |
path_has_submounts | path_has_submounts - check for mounts over a dentry in the* current namespace.*@parent: path to check.* Return true if the parent or its subdirectories contain* a mount point in the current namespace. |
get_mountpoint | |
attach_recursive_mnt | @source_mnt : mount tree to be attached*@nd : place the mount tree @source_mnt is attached*@parent_nd : if non-null, detach the source_mnt from its parent and* store the parent mount and mountpoint dentry |
unlock_mount | |
path_is_under | |
propagate_one | |
propagate_mnt | mount 'source_mnt' under the destination 'dest_mnt' at* dentry 'dest_dentry'. And propagate that mount to* all the peer and slave mounts of 'dest_mnt'.* Link all the new mounts into a propagation tree headed at* source_mnt |
read_seqbegin_or_lock | ad_seqbegin_or_lock - begin a sequence number check or locking block*@lock: sequence lock*@seq : sequence number to be checked* First try it once optimistically without taking the lock. If that fails,* take the lock |
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