Daniel Gryniewicz has uploaded this change for review.

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MDCACHE - Keep an entry pointer in dirent when ref'd

When a dirent has a ref on an entry, it may still not be able to look
the entry up, because it may become unreachable.  In this case, we can't
drop the ref.

Instead, keep a temporary pointer to the entry that is valid only when
we have the ref, and use this instead of looking it up.

Change-Id: I1b87d4fb4201885dd29220dd5515fdaea39ff7c4
Signed-off-by: Daniel Gryniewicz <dang@redhat.com>
---
M src/FSAL/Stackable_FSALs/FSAL_MDCACHE/mdcache_avl.c
M src/FSAL/Stackable_FSALs/FSAL_MDCACHE/mdcache_helpers.c
M src/FSAL/Stackable_FSALs/FSAL_MDCACHE/mdcache_int.h
3 files changed, 44 insertions(+), 32 deletions(-)

git pull ssh://review.gerrithub.io:29418/ffilz/nfs-ganesha refs/changes/58/448058/1

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