Messages in this thread | | | Date | Wed, 20 Dec 2017 14:56:04 -0800 | From | Matthew Wilcox <> | Subject | Re: [PATCH/RFC] VFS: don't keep disconnected dentries on d_anon |
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On Thu, Dec 21, 2017 at 09:45:40AM +1100, NeilBrown wrote: > -c/ Helper routines to allocate anonymous dentries, and to help attach > + prefix. If the refcount on a dentry with this flag set > + becomes zero, the dentry is immediately discarded, rather than being > + kept in the dcache. If a dentry that is not already in the dcache > + is repeatedly accessed by filehandle (as NFSD might do), an new dentry > + will be a allocated for each access, and discarded at the end of
s/a //
> + the access. As there is no parent, children, or name in the dentry > + is it unlikely that there will be any useful information to lose, > + and allocating a new dentry should normally be fast.
How about:
As the dentry is completely unattached, there is little information to lose, and allocating a new dentry is normally fast.
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