Revert "Revert "Fix unlink/xattr deadlock""

[zfs.git] / lib / libzpool / kernel.c

diff --git a/lib/libzpool/kernel.c b/lib/libzpool/kernel.c
index 704f3d6..0e10c89 100644 (file)
--- a/lib/libzpool/kernel.c
+++ b/lib/libzpool/kernel.c
@@ -141,7 +141,7 @@ zk_thread_helper(void *arg)
 
 kthread_t *
 zk_thread_create(caddr_t stk, size_t stksize, thread_func_t func, void *arg,
-             size_t len, proc_t *pp, int state, pri_t pri)
+             size_t len, proc_t *pp, int state, pri_t pri, int detachstate)
 {
        kthread_t *kt;
        pthread_attr_t attr;
@@ -181,6 +181,7 @@ zk_thread_create(caddr_t stk, size_t stksize, thread_func_t func, void *arg,
        VERIFY3S(pthread_attr_init(&attr), ==, 0);
        VERIFY3S(pthread_attr_setstacksize(&attr, stack), ==, 0);
        VERIFY3S(pthread_attr_setguardsize(&attr, PAGESIZE), ==, 0);
+       VERIFY3S(pthread_attr_setdetachstate(&attr, detachstate), ==, 0);
 
        VERIFY3S(pthread_create(&kt->t_tid, &attr, &zk_thread_helper, kt),
            ==, 0);
@@ -646,7 +647,9 @@ vn_rdwr(int uio, vnode_t *vp, void *addr, ssize_t len, offset_t offset,
                 * To simulate partial disk writes, we split writes into two
                 * system calls so that the process can be killed in between.
                 */
-               split = (len > 0 ? rand() % len : 0);
+               int sectors = len >> SPA_MINBLOCKSHIFT;
+               split = (sectors > 0 ? rand() % sectors : 0) <<
+                   SPA_MINBLOCKSHIFT;
                rc = pwrite64(vp->v_fd, addr, split, offset);
                if (rc != -1) {
                        done = rc;