__d_drop man page on Oracle

__d_drop man page on Oracle

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__D_DROP(9)			 The Linux VFS			   __D_DROP(9)

NAME
       __d_drop - drop a dentry

SYNOPSIS
       void __d_drop(struct dentry * dentry);

ARGUMENTS
       dentry
	   dentry to drop

DESCRIPTION
       d_drop unhashes the entry from the parent dentry hashes, so that it
       won't be found through a VFS lookup any more. Note that this is
       different from deleting the dentry - d_delete will try to mark the
       dentry negative if possible, giving a successful _negative_ lookup,
       while d_drop will just make the cache lookup fail.

       d_drop is used mainly for stuff that wants to invalidate a dentry for
       some reason (NFS timeouts or autofs deletes).

       __d_drop requires dentry->d_lock.

COPYRIGHT
Kernel Hackers Manual 3.8.	   June 2014			   __D_DROP(9)

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