On 2/15/18 6:44 AM, GerritHub wrote:
Sachin Punadikar has uploaded this change for *review*.
View Change <https://review.gerrithub.io/400037>
"mdc_lookup" do not dispatch to FSAL
Are you sure? Do you have an actual reproducible error case?
"mdc_lookup" function first attempts to get the entry from cache
via function "mdc_try_get_cached". On getting ESATLE error, it
should dispatch to FSAL, but was again calling "mdc_try_get_cached".
Rectified code to make call to "mdc_lookup_uncached", so FSAL code
gets invoked.
I'm not the mdcache expert, but don't think this is correct. The
comments already explain.
It tries under read lock (fastest). If stale, it write locks and
tries again. If still fails, at the uncached label, then it does
the mdc_lookup_uncached().
mdc_try_get_cached() is likely faster than mdc_lookup_uncached().
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