linux: defer vcache evictions when sleep would be needed

[openafs.git] / src / afs / afs_vcache.c

diff --git a/src/afs/afs_vcache.c b/src/afs/afs_vcache.c
index f357744..d96bfc0 100644 (file)
--- a/src/afs/afs_vcache.c
+++ b/src/afs/afs_vcache.c
@@ -698,7 +698,7 @@ afs_ShakeLooseVCaches(afs_int32 anumber)
     afs_int32 i, loop;
     struct vcache *tvc;
     struct afs_q *tq, *uq;
-    int fv_slept;
+    int fv_slept, defersleep = 0;
     afs_int32 target = anumber;
 
     i = 0;
@@ -718,7 +718,7 @@ afs_ShakeLooseVCaches(afs_int32 anumber)
        }
 
        fv_slept = 0;
-       if (osi_TryEvictVCache(tvc, &fv_slept))
+       if (osi_TryEvictVCache(tvc, &fv_slept, defersleep))
            anumber--;
 
        if (fv_slept) {
@@ -728,8 +728,14 @@ afs_ShakeLooseVCaches(afs_int32 anumber)
            i = 0;
            continue;   /* start over - may have raced. */
        }
-       if (tq == uq)
+       if (tq == uq) {
+           if (anumber && !defersleep) {
+               defersleep = 1;
+               tq = VLRU.prev;
+               continue;
+           }
            break;
+       }
     }
     if (!afsd_dynamic_vcaches && anumber == target) {
        afs_warn("afs_ShakeLooseVCaches: warning none freed, using %d of %d\n",