[NFS-Ganesha-Devel] Change in ...nfs-ganesha[next]: MDCACHE - Fix cache trust when file is modified during getattr

yoni(a)weka.io has uploaded this change for review. ( https://review.gerrithub.io/c/ffilz/nfs-ganesha/+/491544 ) Change subject: MDCACHE - Fix cache trust when file is modified during getattr ...................................................................... MDCACHE - Fix cache trust when file is modified during getattr When mdcache_refresh_attrs is called, first it refreshes the attributes and then it sets MDCACHE_TRUST_ATTRS so the next getattr calls will use the cached results. If write happened while attrs are being refreshed it means the attrs are stale at that point and shouldn't be cached. Introducing attr_generation solves that problem by increasing the generation every time a write occurs, comparing the generation before and after refreshing attributes and setting the MDCACHE_TRUST_ATTRS flag only if the generation didn't change during that time. Change-Id: I9f22aac2046b305c4d3796e05526781eacbbbe7d Signed-off-by: Yoni Knobil <yoni(a)weka.io&gt; --- M src/FSAL/Stackable_FSALs/FSAL_MDCACHE/mdcache_file.c M src/FSAL/Stackable_FSALs/FSAL_MDCACHE/mdcache_handle.c M src/FSAL/Stackable_FSALs/FSAL_MDCACHE/mdcache_int.h M src/FSAL/Stackable_FSALs/FSAL_MDCACHE/mdcache_lru.c 4 files changed, 19 insertions(+), 2 deletions(-) git pull ssh://review.gerrithub.io:29418/ffilz/nfs-ganesha refs/changes/44/491544/1 -- To view, visit https://review.gerrithub.io/c/ffilz/nfs-ganesha/+/491544 To unsubscribe, or for help writing mail filters, visit https://review.gerrithub.io/settings Gerrit-Project: ffilz/nfs-ganesha Gerrit-Branch: next Gerrit-Change-Id: I9f22aac2046b305c4d3796e05526781eacbbbe7d Gerrit-Change-Number: 491544 Gerrit-PatchSet: 1 Gerrit-Owner: yoni(a)weka.io Gerrit-MessageType: newchange