|nfs41_SetZeroData()| use |RxPurgeFcbInSystemCache()|
Posted by Anonymous on Wed 12th Mar 2025 16:32
raw | new post

diff --git a/sys/nfs41sys_fsctl.c b/sys/nfs41sys_fsctl.c
index ede33e3..8cdb5f2 100644
--- a/sys/nfs41sys_fsctl.c
+++ b/sys/nfs41sys_fsctl.c
@@ -482,17 +482,14 @@ NTSTATUS nfs41_SetZeroData(
         (long long)setzerodatabuffer->BeyondFinalZero.QuadPart);

     /*
-     * Disable caching because NFSv4.2 DEALLOCATE is basically a
-     * "write" operation. AFAIK we should flush the cache and wait
-     * for the kernel lazy writer (which |RxChangeBufferingState()|
-     * AFAIK does) before doing the DEALLOCATE, to avoid that we
+     * NFSv4.2 DEALLOCATE is basically a
+     * "write" operation. AFAIK we should purge the filesystem cache
+     * before doing the DEALLOCATE, to avoid that we
      * have outstanding writes in the kernel cache at the same
      * location where the DEALLOCATE should do it's work
      */
-    ULONG flag = DISABLE_CACHING;
-    DbgP("nfs41_SetZeroData: disableing caching for file '%wZ'\n",
-        SrvOpen->pAlreadyPrefixedName);
-    RxChangeBufferingState((PSRV_OPEN)SrvOpen, ULongToPtr(flag), 1);
+    (void)RxPurgeFcbInSystemCache((PFCB)RxContext->pFcb,
+        NULL, 0UL, TRUE, TRUE);

     status = nfs41_UpcallCreate(NFS41_SYSOP_FSCTL_SET_ZERO_DATA,
         &nfs41_fobx->sec_ctx,