Xueqian Hu has uploaded this change for review. ( https://review.gerrithub.io/c/ffilz/nfs-ganesha/+/1202422?usp=email ) Change subject: Sync lru_run with release_export ...................................................................... Sync lru_run with release_export Hit ganesha crash when removing a export & lru_run to clean caches: Thread 17 (Thread 0x7fed38bbe700 (LWP 62657)): ... Thread 1 (Thread 0x7fed437d8700 (LWP 62634)): This could happen when the mdcache caches number is above the high water limit which will trigger the lru_run to clean caches, and at the same time the release export(from dbus) is also in progress. Steps to repro the crash: 1. add sleep in unexport code path like 10 seconds(I added delay at the beginning of state_release_export) 2. use short lru interval: LRU_Run_Interval = 5 3. set lru_state.entries_hiwat to low value like 0 4. from client side, use vi to read a file -> keep delegation -> hold the cache to prevent clean immediately 5. dbus call to remove the export Change-Id: I378138f94bd804c312d68d0fab631d077cf52da5 Signed-off-by: Xueqian Hu <xh140312(a)outlook.com&gt; --- M src/FSAL/Stackable_FSALs/FSAL_MDCACHE/mdcache_lru.c 1 file changed, 3 insertions(+), 0 deletions(-) git pull ssh://review.gerrithub.io:29418/ffilz/nfs-ganesha refs/changes/22/1202422/1 -- To view, visit https://review.gerrithub.io/c/ffilz/nfs-ganesha/+/1202422?usp=email To unsubscribe, or for help writing mail filters, visit https://review.gerrithub.io/settings?usp=email Gerrit-MessageType: newchange Gerrit-Project: ffilz/nfs-ganesha Gerrit-Branch: next Gerrit-Change-Id: I378138f94bd804c312d68d0fab631d077cf52da5 Gerrit-Change-Number: 1202422 Gerrit-PatchSet: 1 Gerrit-Owner: Xueqian Hu <xh140312(a)outlook.com&gt;