>From Frank Filz <ffilz...@mindspring.com>:
Frank Filz has uploaded this change for review. (
https://review.gerrithub.io/359197
Change subject: Fix race between mdcache_unexport and mdc_check_mapping
......................................................................
Fix race between mdcache_unexport and mdc_check_mapping
Once we start an unexport, we must reject any new mappings between the
export and cache entries. In fact, we can utilize mdc_check_mapping to
shortcut and return ERR_FSAL_STALE for lookups and other operations
that access an mdcache entry (they come through mdc_check_mapping to
assure that the entry is mapped for an export it is accessed via).
Because of the way the locking works, we check for unexport again
before actually creating a new mapping just in case we had an unusual
race between mdcache_unexport and mdc_check_mapping.
Change-Id: I68b600c1996c7f41c7cd0b3124ce8cf1ac5c772a
Signed-off-by: Frank S. Filz <ffilz...@mindspring.com>
---
M src/FSAL/Stackable_FSALs/FSAL_MDCACHE/mdcache_export.c
M src/FSAL/Stackable_FSALs/FSAL_MDCACHE/mdcache_helpers.c
M src/FSAL/Stackable_FSALs/FSAL_MDCACHE/mdcache_int.h
3 files changed, 68 insertions(+), 9 deletions(-)
git pull ssh://review.gerrithub.io:29418/ffilz/nfs-ganesha
refs/changes/97/359197/1
--
To view, visit https://review.gerrithub.io/359197
To unsubscribe, visit https://review.gerrithub.io/settings
Gerrit-Project: ffilz/nfs-ganesha
Gerrit-Branch: next
Gerrit-MessageType: newchange
Gerrit-Change-Id: I68b600c1996c7f41c7cd0b3124ce8cf1ac5c772a
Gerrit-Change-Number: 359197
Gerrit-PatchSet: 1
Gerrit-Owner: Frank Filz <ffilz...@mindspring.com>
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