[XFS] Switch kernel thread handling to the kthread_ API
SGI-PV: 942063
SGI-Modid: xfs-linux:xfs-kern:198388a
Signed-off-by: Christoph Hellwig <hch@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c
index e634090..655bf4a 100644
--- a/fs/xfs/linux-2.6/xfs_buf.c
+++ b/fs/xfs/linux-2.6/xfs_buf.c
@@ -54,6 +54,7 @@
#include <linux/percpu.h>
#include <linux/blkdev.h>
#include <linux/hash.h>
+#include <linux/kthread.h>
#include "xfs_linux.h"
@@ -1742,9 +1743,7 @@
}
/* Defines for pagebuf daemon */
-STATIC DECLARE_COMPLETION(xfsbufd_done);
STATIC struct task_struct *xfsbufd_task;
-STATIC int xfsbufd_active;
STATIC int xfsbufd_force_flush;
STATIC int xfsbufd_force_sleep;
@@ -1770,14 +1769,8 @@
xfs_buftarg_t *target;
xfs_buf_t *pb, *n;
- /* Set up the thread */
- daemonize("xfsbufd");
current->flags |= PF_MEMALLOC;
- xfsbufd_task = current;
- xfsbufd_active = 1;
- barrier();
-
INIT_LIST_HEAD(&tmp);
do {
if (unlikely(freezing(current))) {
@@ -1825,9 +1818,9 @@
purge_addresses();
xfsbufd_force_flush = 0;
- } while (xfsbufd_active);
+ } while (!kthread_should_stop());
- complete_and_exit(&xfsbufd_done, 0);
+ return 0;
}
/*
@@ -1910,9 +1903,11 @@
if (!xfsdatad_workqueue)
goto out_destroy_xfslogd_workqueue;
- error = kernel_thread(xfsbufd, NULL, CLONE_FS|CLONE_FILES);
- if (error < 0)
+ xfsbufd_task = kthread_run(xfsbufd, NULL, "xfsbufd");
+ if (IS_ERR(xfsbufd_task)) {
+ error = PTR_ERR(xfsbufd_task);
goto out_destroy_xfsdatad_workqueue;
+ }
return 0;
out_destroy_xfsdatad_workqueue:
@@ -1929,10 +1924,7 @@
STATIC void
xfs_buf_daemons_stop(void)
{
- xfsbufd_active = 0;
- barrier();
- wait_for_completion(&xfsbufd_done);
-
+ kthread_stop(xfsbufd_task);
destroy_workqueue(xfslogd_workqueue);
destroy_workqueue(xfsdatad_workqueue);
}