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authorTrond Myklebust <trond.myklebust@hammerspace.com>2022-11-04 20:20:01 +0300
committerTrond Myklebust <trond.myklebust@hammerspace.com>2022-11-28 06:09:59 +0300
commit51069e4aef6257b0454057359faed0ab0c9af083 (patch)
tree46449a53c31fb2f67cc5b3cf9cc7013af62c3223 /tools/perf/scripts/python/arm-cs-trace-disasm.py
parente83458fce080dc23c25353a1af90bfecf79c7369 (diff)
downloadlinux-51069e4aef6257b0454057359faed0ab0c9af083.tar.xz
NFSv4: Fix a deadlock between nfs4_open_recover_helper() and delegreturn
If we're asked to recover open state while a delegation return is outstanding, then the state manager thread cannot use a cached open, so if the server returns a delegation, we can end up deadlocked behind the pending delegreturn. To avoid this problem, let's just ask the server not to give us a delegation unless we're explicitly reclaiming one. Fixes: be36e185bd26 ("NFSv4: nfs4_open_recover_helper() must set share access") Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
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