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(parent: a734eb4) | patch
fs: dcache reduce prune_one_dentry locking
authorNick Piggin <npiggin@kernel.dk>
Fri, 7 Jan 2011 06:49:45 +0000 (17:49 +1100)
committerNick Piggin <npiggin@kernel.dk>
Fri, 7 Jan 2011 06:50:25 +0000 (17:50 +1100)
commit89e6054836a7b1e7500cd70a14b5579e752c9250
treeb74d2ecd1ac2a571d289e5525a0dc067ec1f35ebtree | snapshot
parenta734eb458ab2bd11479a27dd54f48e1b26a55845commit | 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>
fs/dcache.c diff | blob | history
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