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authorNick Piggin <npiggin@kernel.dk>2011-01-07 17:49:45 +1100
committerNick Piggin <npiggin@kernel.dk>2011-01-07 17:50:25 +1100
commit89e6054836a7b1e7500cd70a14b5579e752c9250 (patch)
treeb74d2ecd1ac2a571d289e5525a0dc067ec1f35eb /.gitignore
parenta734eb458ab2bd11479a27dd54f48e1b26a55845 (diff)
fs: dcache reduce prune_one_dentry locking
prune_one_dentry can avoid quite a bit of locking in the common case where ancestors have an elevated refcount. Alternatively, we could have gone the other way and made fewer trylocks in the case where d_count goes to zero, but is probably less common. Signed-off-by: Nick Piggin <npiggin@kernel.dk>
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