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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

February 2017 Kernel Hackers Manual 3.16