Hi linux-nfs,
311324ad1713 ("NFS: Be more aggressive in using readdirplus for 'ls -l'
situations") changed when nfs_readdir() decides to revalidate the
directory's mapping, which contains all the entries. In addition to just
checking if the attribute cache has expired, it includes a check to see if
NFS_INO_INVALID_DATA is set on the directory.
Well, customers that have directories with very many dentries and that same
directory's attributes are frequently updated are now grouchy that `ls -l`
takes so long since any update of the directory causes the mapping to be
invalidated and we have to start over filling the directory's mapping.
I actually haven't put real hard thought into it yet (because often for me
that just wastes a lot of time), so I am doing the lazy thing by asking this
question:
Can we go back to just the using the attribute cache timeout, or should we
get all heuristical about readdir?
Ben
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